Pub Date : 2021-05-17DOI: 10.1080/01614940.2021.1926849
Daniela L. Bordón, María F. Decarlini, A. Vázquez, Gabriela I. Demmel, L. Rossi, Mario L. Aimar
ABSTRACT The acetophenone stereoselective reduction reactions carried out by different chemical or biochemical methodologies reported in the literature were analyzed. This study showed the importance of evaluation in each reaction step, both holistically and quantitatively, even if the amounts used are at the mmol level. It is clear that the use of catalysts does not guarantee that the chemical process is environmentally friendly, as well as that the benefits of bio-driven processes can be diminished due to the complications of product purification. This work shows that the development of tools to determine the sustainability of a process is extremely important.
{"title":"Comparative green analysis between different catalytic methodologies used in stereoselective reduction reaction of acetophenone","authors":"Daniela L. Bordón, María F. Decarlini, A. Vázquez, Gabriela I. Demmel, L. Rossi, Mario L. Aimar","doi":"10.1080/01614940.2021.1926849","DOIUrl":"https://doi.org/10.1080/01614940.2021.1926849","url":null,"abstract":"ABSTRACT The acetophenone stereoselective reduction reactions carried out by different chemical or biochemical methodologies reported in the literature were analyzed. This study showed the importance of evaluation in each reaction step, both holistically and quantitatively, even if the amounts used are at the mmol level. It is clear that the use of catalysts does not guarantee that the chemical process is environmentally friendly, as well as that the benefits of bio-driven processes can be diminished due to the complications of product purification. This work shows that the development of tools to determine the sustainability of a process is extremely important.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"32 1","pages":"426 - 454"},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76518090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-13DOI: 10.1080/01614940.2021.1904543
Jaqueline F. Souza, Matheus S. Gularte, R. Quadrado, A. F. Biajoli, A. R. Fajardo
ABSTRACT Cu species (ions or nanoparticles) have gained considerable attention in many research fields, mainly in catalysis. In particular, the development of novel support materials, especially those based on polysaccharides, has allowed using Cu-based catalysts in a vast number of applications. Polysaccharides show attractive characteristics that encourage the researchers to develop support materials with varied sizes and geometry capable of immobilizing various Cu species. Herein, we comprehensively discuss the main advances related to the development of catalysts based on Cu-supported in polysaccharide-based materials along with their application in heterogeneous catalysis. Finally, some perspectives on the future directions toward the development and application of these catalysts are provided.
{"title":"Copper species supported in polysaccharide-based materials: from preparation to application in catalysis","authors":"Jaqueline F. Souza, Matheus S. Gularte, R. Quadrado, A. F. Biajoli, A. R. Fajardo","doi":"10.1080/01614940.2021.1904543","DOIUrl":"https://doi.org/10.1080/01614940.2021.1904543","url":null,"abstract":"ABSTRACT Cu species (ions or nanoparticles) have gained considerable attention in many research fields, mainly in catalysis. In particular, the development of novel support materials, especially those based on polysaccharides, has allowed using Cu-based catalysts in a vast number of applications. Polysaccharides show attractive characteristics that encourage the researchers to develop support materials with varied sizes and geometry capable of immobilizing various Cu species. Herein, we comprehensively discuss the main advances related to the development of catalysts based on Cu-supported in polysaccharide-based materials along with their application in heterogeneous catalysis. Finally, some perspectives on the future directions toward the development and application of these catalysts are provided.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"113 1","pages":"52 - 117"},"PeriodicalIF":0.0,"publicationDate":"2021-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80750653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-04DOI: 10.1080/01614940.2021.1882048
H. A. Khan, Ahsan Jaleel, Eyas Mahmoud, Shoaib Ahmed, U. H. Bhatti, M. Bilal, Hussain
ABSTRACT To achieve carbon-neutral energy vectors, researchers have investigated various sulfur-based thermochemical cycles. The sulfur–iodine cycle has emerged as a cost-effective global process with massive hydrogen production potentials. However, all sulfur-based thermochemical cycles involve sulfuric acid decomposition reaction, which is highly corrosive and energy intensive. The activation energy of this reaction can be reduced using catalysts that decrease the onset temperature of the reaction. Renewable heat sources such as solar and waste nuclear heat demand high stability to operate within a wide temperature window (650°C–900°C). Several metal/metal oxide systems based on noble and transition metals have been investigated over the last twenty years. In the literature, supported Pt-based catalysts are regarded as the prime choice for stable operations. However, during catalytic operations, noble metals are degraded owing to sintering, oxidation, leaching, and other processes. Transition metal oxides such as Fe, Cu, Cr, and Ni exhibit promising catalytic activity at high temperatures; however, at low temperatures (>600°C), their activation is reduced owing to poisoning and the formation of stable sulfate species. The catalytic activity of transition metal oxides is determined by the decomposition temperature of its corresponding metal sulfate; thus, the metal sulfate formation is considered as the rate-limiting step. Herein, the catalytic systems studied over the last decade are summarized, and recommendations for designing robust catalysts for commercial applications are presented.
{"title":"Development of catalysts for sulfuric acid decomposition in the sulfur–iodine cycle: a review","authors":"H. A. Khan, Ahsan Jaleel, Eyas Mahmoud, Shoaib Ahmed, U. H. Bhatti, M. Bilal, Hussain","doi":"10.1080/01614940.2021.1882048","DOIUrl":"https://doi.org/10.1080/01614940.2021.1882048","url":null,"abstract":"ABSTRACT To achieve carbon-neutral energy vectors, researchers have investigated various sulfur-based thermochemical cycles. The sulfur–iodine cycle has emerged as a cost-effective global process with massive hydrogen production potentials. However, all sulfur-based thermochemical cycles involve sulfuric acid decomposition reaction, which is highly corrosive and energy intensive. The activation energy of this reaction can be reduced using catalysts that decrease the onset temperature of the reaction. Renewable heat sources such as solar and waste nuclear heat demand high stability to operate within a wide temperature window (650°C–900°C). Several metal/metal oxide systems based on noble and transition metals have been investigated over the last twenty years. In the literature, supported Pt-based catalysts are regarded as the prime choice for stable operations. However, during catalytic operations, noble metals are degraded owing to sintering, oxidation, leaching, and other processes. Transition metal oxides such as Fe, Cu, Cr, and Ni exhibit promising catalytic activity at high temperatures; however, at low temperatures (>600°C), their activation is reduced owing to poisoning and the formation of stable sulfate species. The catalytic activity of transition metal oxides is determined by the decomposition temperature of its corresponding metal sulfate; thus, the metal sulfate formation is considered as the rate-limiting step. Herein, the catalytic systems studied over the last decade are summarized, and recommendations for designing robust catalysts for commercial applications are presented.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"18 1","pages":"875 - 910"},"PeriodicalIF":0.0,"publicationDate":"2021-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82807058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-03DOI: 10.1080/01614940.2021.1948298
Hao Xu, Peng Wu
ABSTRACT Two-dimensional (2D) zeolites with modifiable structures, can possess great advantages in catalysis compared to three-dimensional (3D) rigid ones. Three kinds of 2D zeolites, including traditional lamellar ones, 2D zeolites induced by oriented growth with specially designed structural-directing agents, and 2D intermediates derived from germanosilicates, are covered in this review. 2D zeolites derived catalysts with higher surface area, larger pore size or hierarchical pore system release the diffusion constrains and enhance the accessibility of active sites, but they may also exhibit different microenvironments to the traditional 3D zeolites. The present review focuses on the complex relationship among pore architectures, location of active sites and the catalytic properties by comparing the 2D zeolite catalysts to 3D ones in the reactions catalyzed by framework Al or other heteroatoms (Ti and Sn), such as alkylation, selective oxidation and isomerization reactions. Last but not least, the challenges for future progress on both the preparation and application of these 2D zeolite catalysts are addressed.
{"title":"Two-dimensional zeolites in catalysis: current state-of-the-art and perspectives","authors":"Hao Xu, Peng Wu","doi":"10.1080/01614940.2021.1948298","DOIUrl":"https://doi.org/10.1080/01614940.2021.1948298","url":null,"abstract":"ABSTRACT Two-dimensional (2D) zeolites with modifiable structures, can possess great advantages in catalysis compared to three-dimensional (3D) rigid ones. Three kinds of 2D zeolites, including traditional lamellar ones, 2D zeolites induced by oriented growth with specially designed structural-directing agents, and 2D intermediates derived from germanosilicates, are covered in this review. 2D zeolites derived catalysts with higher surface area, larger pore size or hierarchical pore system release the diffusion constrains and enhance the accessibility of active sites, but they may also exhibit different microenvironments to the traditional 3D zeolites. The present review focuses on the complex relationship among pore architectures, location of active sites and the catalytic properties by comparing the 2D zeolite catalysts to 3D ones in the reactions catalyzed by framework Al or other heteroatoms (Ti and Sn), such as alkylation, selective oxidation and isomerization reactions. Last but not least, the challenges for future progress on both the preparation and application of these 2D zeolite catalysts are addressed.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"23 1","pages":"234 - 301"},"PeriodicalIF":0.0,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82043096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-03DOI: 10.1080/01614940.2021.1948301
D. Resasco, S. Crossley, Bin Wang, Jeffery L. White
ABSTRACT Water is ubiquitous in many thermal treatments and reaction conditions involving zeolite catalysts, but the potential impacts are complex. The different types of water interaction with zeolites have profound consequences in the stability, structure/composition, and reactivity of these important catalysts. This review analyzes the current knowledge about the mechanistic aspects of water adsorption and nucleation on zeolites surfaces and the concomitant role of zeolite defects, cations and extra framework species. Examples of experimental and computational studies of water interaction with zeolites of varying Si/Al ratios, topologies, and level of silanol defects are reviewed and analyzed. The different steps associated with the process of steaming, including the Al-O-Si bond hydrolysis and subsequent structural modifications, such as dealumination, mesopore formation, and amorphization, are evaluated in light of recent DFT calculations, as well as SS NMR and other spectroscopic studies. Differences between the mechanisms of water attack of the zeolite in vapor or liquid phase are highlighted and explained, as well as the effect of hydrophobic/hydrophilic properties of the zeolite walls. In parallel, the various roles of water as modifier of reactivity are reviewed and discussed, both for plain zeolites as well as rare-earth or phosphorous-modified materials.
{"title":"Interaction of water with zeolites: a review","authors":"D. Resasco, S. Crossley, Bin Wang, Jeffery L. White","doi":"10.1080/01614940.2021.1948301","DOIUrl":"https://doi.org/10.1080/01614940.2021.1948301","url":null,"abstract":"ABSTRACT Water is ubiquitous in many thermal treatments and reaction conditions involving zeolite catalysts, but the potential impacts are complex. The different types of water interaction with zeolites have profound consequences in the stability, structure/composition, and reactivity of these important catalysts. This review analyzes the current knowledge about the mechanistic aspects of water adsorption and nucleation on zeolites surfaces and the concomitant role of zeolite defects, cations and extra framework species. Examples of experimental and computational studies of water interaction with zeolites of varying Si/Al ratios, topologies, and level of silanol defects are reviewed and analyzed. The different steps associated with the process of steaming, including the Al-O-Si bond hydrolysis and subsequent structural modifications, such as dealumination, mesopore formation, and amorphization, are evaluated in light of recent DFT calculations, as well as SS NMR and other spectroscopic studies. Differences between the mechanisms of water attack of the zeolite in vapor or liquid phase are highlighted and explained, as well as the effect of hydrophobic/hydrophilic properties of the zeolite walls. In parallel, the various roles of water as modifier of reactivity are reviewed and discussed, both for plain zeolites as well as rare-earth or phosphorous-modified materials.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"66 1","pages":"302 - 362"},"PeriodicalIF":0.0,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76968978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-03DOI: 10.1080/01614940.2021.1948302
Priyanka Verma, Yoshifumi Kondo, Yasutaka Kuwahara, T. Kamegawa, K. Mori, R. Raja, H. Yamashita
ABSTRACT Porous materials have attracted considerable attention in materials science, chemistry and multidisciplinary areas of research due to their diverse structures, tailorable functionalities, large surface areas, remarkable optical transparency, confinement and shape selectivity effects. The precise architecture of porous photocatalytic materials has been extensively reported by the hybridization of semiconducting nanoparticles (NPs), light-responsive metal complexes and plasmonic metal NPs with silica-based micro-, meso- and macro-porous nanostructures. This review targets to cover state-of-the-art accomplishments in the surface engineering chemistry of zeolites, mesoporous silica, and metal-organic frameworks (MOFs) as excellent host materials for solar to chemical energy conversion and environmental remediation. The specific advantages and disadvantages of representative porous materials in photocatalysis have also been elaborated and summarized. Finally, key advances and prospects are presented to overcome the current challenges in photocatalysis and to inspire further studies in this rapidly evolving research field. Graphical abstract
{"title":"Design and application of photocatalysts using porous materials","authors":"Priyanka Verma, Yoshifumi Kondo, Yasutaka Kuwahara, T. Kamegawa, K. Mori, R. Raja, H. Yamashita","doi":"10.1080/01614940.2021.1948302","DOIUrl":"https://doi.org/10.1080/01614940.2021.1948302","url":null,"abstract":"ABSTRACT Porous materials have attracted considerable attention in materials science, chemistry and multidisciplinary areas of research due to their diverse structures, tailorable functionalities, large surface areas, remarkable optical transparency, confinement and shape selectivity effects. The precise architecture of porous photocatalytic materials has been extensively reported by the hybridization of semiconducting nanoparticles (NPs), light-responsive metal complexes and plasmonic metal NPs with silica-based micro-, meso- and macro-porous nanostructures. This review targets to cover state-of-the-art accomplishments in the surface engineering chemistry of zeolites, mesoporous silica, and metal-organic frameworks (MOFs) as excellent host materials for solar to chemical energy conversion and environmental remediation. The specific advantages and disadvantages of representative porous materials in photocatalysis have also been elaborated and summarized. Finally, key advances and prospects are presented to overcome the current challenges in photocatalysis and to inspire further studies in this rapidly evolving research field. Graphical abstract","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"78 1","pages":"165 - 233"},"PeriodicalIF":0.0,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80080984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-04-01DOI: 10.1080/01614940.2021.1899605
S. Shirvani, M. Ghashghaee, Kevin J. Smith
ABSTRACT Two-dimensional (2D) nanomaterials have attracted intense interest since the successful discovery of mechanically exfoliated graphene. Their unique chemical, mechanical, optical, and electrical properties have been exploited in a wide range of applications, including electrical/optoelectrical devices, solar cells, sensors, membranes, and electro/photocatalysis. However, the application of 2D nanomaterials as thermocatalysts is much less common such that a wide range of questions regarding their activity and stability remain. Herein, the application of 2D transition metal dichalcogenides (TMDs), metal phosphorus trichalcogenides (MPTs) and MXenes as thermocatalysts is reviewed. The data indicate that in most cases, reducing the thickness of the catalyst to that of a single or a few layers of atoms, leads to a significant improvement in product selectivity and reaction rate. However, challenges remain, including the low thermal and chemical stability of 2D nanostructures at typical thermocatalytic operating conditions, facile poisoning of the exposed surface, and rapid loss of activity. In addition, the synthesis procedures for 2D nanostructures are complex, making reproducibility and scale-up difficult. This review identifies knowledge gaps to draw attention to these unique materials that have the potential for significant impact as thermocatalysts.
{"title":"Two-dimensional Nanomaterials in Thermocatalytic Reactions: Transition Metal Dichalcogenides, Metal Phosphorus Trichalcogenides and MXenes","authors":"S. Shirvani, M. Ghashghaee, Kevin J. Smith","doi":"10.1080/01614940.2021.1899605","DOIUrl":"https://doi.org/10.1080/01614940.2021.1899605","url":null,"abstract":"ABSTRACT Two-dimensional (2D) nanomaterials have attracted intense interest since the successful discovery of mechanically exfoliated graphene. Their unique chemical, mechanical, optical, and electrical properties have been exploited in a wide range of applications, including electrical/optoelectrical devices, solar cells, sensors, membranes, and electro/photocatalysis. However, the application of 2D nanomaterials as thermocatalysts is much less common such that a wide range of questions regarding their activity and stability remain. Herein, the application of 2D transition metal dichalcogenides (TMDs), metal phosphorus trichalcogenides (MPTs) and MXenes as thermocatalysts is reviewed. The data indicate that in most cases, reducing the thickness of the catalyst to that of a single or a few layers of atoms, leads to a significant improvement in product selectivity and reaction rate. However, challenges remain, including the low thermal and chemical stability of 2D nanostructures at typical thermocatalytic operating conditions, facile poisoning of the exposed surface, and rapid loss of activity. In addition, the synthesis procedures for 2D nanostructures are complex, making reproducibility and scale-up difficult. This review identifies knowledge gaps to draw attention to these unique materials that have the potential for significant impact as thermocatalysts.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"71 1","pages":"1 - 51"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76543570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-09DOI: 10.1080/01614940.2020.1864860
D. A. Bulushev, L. G. Bulusheva
ABSTRACT Formic acid is a liquid organic hydrogen carrier. Metal and metal-complex catalysts are known to catalyze the hydrogen production from formic acid and hydrogen transfer reactions with formic acid as a hydrogen donor. In this review, we will show that heterogeneous catalysts with single metal atoms are promising for these reactions. The main emphasis is done to the catalysts with single atoms stabilized by pyridinic nitrogen atoms on the edge or vacancy sites of graphene sheets. The activity of the catalysts containing these sites often exceeds that of the catalysts with nanoparticles. We consider application of different physical methods and density functional theory calculations to establish the nature of single-atom active sites and reaction mechanism. Coordination of these sites significantly affects their performance in the mentioned reactions. This review could be useful for development of novel efficient catalysts.
{"title":"Catalysts with single metal atoms for the hydrogen production from formic acid","authors":"D. A. Bulushev, L. G. Bulusheva","doi":"10.1080/01614940.2020.1864860","DOIUrl":"https://doi.org/10.1080/01614940.2020.1864860","url":null,"abstract":"ABSTRACT Formic acid is a liquid organic hydrogen carrier. Metal and metal-complex catalysts are known to catalyze the hydrogen production from formic acid and hydrogen transfer reactions with formic acid as a hydrogen donor. In this review, we will show that heterogeneous catalysts with single metal atoms are promising for these reactions. The main emphasis is done to the catalysts with single atoms stabilized by pyridinic nitrogen atoms on the edge or vacancy sites of graphene sheets. The activity of the catalysts containing these sites often exceeds that of the catalysts with nanoparticles. We consider application of different physical methods and density functional theory calculations to establish the nature of single-atom active sites and reaction mechanism. Coordination of these sites significantly affects their performance in the mentioned reactions. This review could be useful for development of novel efficient catalysts.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"25 1","pages":"835 - 874"},"PeriodicalIF":0.0,"publicationDate":"2021-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81967380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.1080/01614940.2020.1864859
I. Shafiq, Sumeer Shafique, P. Akhter, G. Abbas, A. Qurashi, M. Hussain
ABSTRACT The supply of environmentally friendly petroleum products has extreme importance in ensuring a reliable healthy climate globally. The elimination of obstinate sulfur complexes is an enormous task in the current challenging legislative situation for fuel refining companies. The conversion of these obstinate sulfur complexes is challenging in the progression of deeper photocatalytic oxidative desulfurization. As an eco-friendly, inexpensive and non-lethal oxidant with bountiful accessibility, oxygen prevailing in the air is utilized in the deep photocatalytic oxidative desulfurization process as a reliable substitute for hydroperoxide and other expensive hydroperoxide derivatives. However, the superlative activation of oxygen under light irradiations is hitherto a challenge. This potential review critically analyzes the recent strategies employed for the development of efficient materials for the progression of deep aerobic photocatalytic oxidative desulfurization system for the removal of obstinate sulfur complexes. Furthermore, the associated technologies influencing the deep photocatalytic oxidative desulfurization performances have been identified and significant parameters for the process optimization are evaluated to address the forthcoming challenges. Graphical Abstract
{"title":"Efficient catalyst development for deep aerobic photocatalytic oxidative desulfurization: recent advances, confines, and outlooks","authors":"I. Shafiq, Sumeer Shafique, P. Akhter, G. Abbas, A. Qurashi, M. Hussain","doi":"10.1080/01614940.2020.1864859","DOIUrl":"https://doi.org/10.1080/01614940.2020.1864859","url":null,"abstract":"ABSTRACT The supply of environmentally friendly petroleum products has extreme importance in ensuring a reliable healthy climate globally. The elimination of obstinate sulfur complexes is an enormous task in the current challenging legislative situation for fuel refining companies. The conversion of these obstinate sulfur complexes is challenging in the progression of deeper photocatalytic oxidative desulfurization. As an eco-friendly, inexpensive and non-lethal oxidant with bountiful accessibility, oxygen prevailing in the air is utilized in the deep photocatalytic oxidative desulfurization process as a reliable substitute for hydroperoxide and other expensive hydroperoxide derivatives. However, the superlative activation of oxygen under light irradiations is hitherto a challenge. This potential review critically analyzes the recent strategies employed for the development of efficient materials for the progression of deep aerobic photocatalytic oxidative desulfurization system for the removal of obstinate sulfur complexes. Furthermore, the associated technologies influencing the deep photocatalytic oxidative desulfurization performances have been identified and significant parameters for the process optimization are evaluated to address the forthcoming challenges. Graphical Abstract","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"1 1","pages":"789 - 834"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87491317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-22DOI: 10.1080/01614940.2020.1839849
Devesh Chandra, A. Dhiman, D. Parmar, U. Sharma
ABSTRACT C-H activation is a prominent tool in organic synthesis. The potential application of C-H activation in the diversification of heterocycles has attracted widespread industrial interest. Reactions involving alkylation, alkenylation, and alkynylation have an edge in modern organic synthesis and are widely employed to synthesize vital molecules. Among different metal catalysts used in C-H activation of heterocycles, group 9 (Co, Rh, Ir) metal complexes particularly MCp* have emerged as powerful catalysts. The current review is focused on the recent developments in the Group 9 transition metal (Rh, Ir, Co) catalyzed alkylation, alkenylation, and alkynylation of the heterocycles via C-H bond activation.
{"title":"Alkylation, alkenylation, and alkynylation of heterocyclic compounds through group 9 (Co, Rh, Ir) metal-catalyzed C-H activation","authors":"Devesh Chandra, A. Dhiman, D. Parmar, U. Sharma","doi":"10.1080/01614940.2020.1839849","DOIUrl":"https://doi.org/10.1080/01614940.2020.1839849","url":null,"abstract":"ABSTRACT C-H activation is a prominent tool in organic synthesis. The potential application of C-H activation in the diversification of heterocycles has attracted widespread industrial interest. Reactions involving alkylation, alkenylation, and alkynylation have an edge in modern organic synthesis and are widely employed to synthesize vital molecules. Among different metal catalysts used in C-H activation of heterocycles, group 9 (Co, Rh, Ir) metal complexes particularly MCp* have emerged as powerful catalysts. The current review is focused on the recent developments in the Group 9 transition metal (Rh, Ir, Co) catalyzed alkylation, alkenylation, and alkynylation of the heterocycles via C-H bond activation.","PeriodicalId":9647,"journal":{"name":"Catalysis Reviews","volume":"107 1","pages":"716 - 788"},"PeriodicalIF":0.0,"publicationDate":"2020-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78968547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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