Pub Date : 2023-01-01DOI: 10.1615/catalgreenchemeng.2023044248
Rajesh Sharma, G. Yadav
{"title":"Kinetics of semi batch oxidation of benzyl alcohol to benzaldehyde by using sulfated Fe-TiO2 catalyst","authors":"Rajesh Sharma, G. Yadav","doi":"10.1615/catalgreenchemeng.2023044248","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2023044248","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85154946","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}
Catalytic conversion of fructose into 5-hydroxymethylfurfural (HMF) was investigated in detail using chromium-exchanged Kunipia-F clay (K550-Cr - calcined at 550ºC) using dimethyl sulfoxide (DMSO) as the solvent. The as-synthesized catalyst was characterized using XRD, ICE-AES, BET, SEM, FTIR and EDX. The clay catalysts were initially screened for fructose conversion and HMF yield and then K550-Cr, which showed the superior activity amongst the catalysts understudy, was chosen for further experiments. Various reaction parameters like reaction temperature and time, catalyst dosage, initial substrate concentration and catalyst reusability were studied in detail. The maximum HMF yield obtained was about 89 % at milder reaction conditions (130 ºC for 3h). The most interesting result was that the catalyst could be recovered easily without any loss and reused 4 times without loss in activity (HMF yield after 5th cycle was 88%).
{"title":"Catalytic conversion of fructose into 5-hydroxymethylfurfural by using Cr-modified Kunipia-F clay","authors":"Chandrakanth Gadipelly, Keyur Moradiya, Ruchir Agrawal, Lakshmi Mannepalli","doi":"10.1615/catalgreenchemeng.2023049758","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2023049758","url":null,"abstract":"Catalytic conversion of fructose into 5-hydroxymethylfurfural (HMF) was investigated in detail using chromium-exchanged Kunipia-F clay (K550-Cr - calcined at 550ºC) using dimethyl sulfoxide (DMSO) as the solvent. The as-synthesized catalyst was characterized using XRD, ICE-AES, BET, SEM, FTIR and EDX. The clay catalysts were initially screened for fructose conversion and HMF yield and then K550-Cr, which showed the superior activity amongst the catalysts understudy, was chosen for further experiments. Various reaction parameters like reaction temperature and time, catalyst dosage, initial substrate concentration and catalyst reusability were studied in detail. The maximum HMF yield obtained was about 89 % at milder reaction conditions (130 ºC for 3h). The most interesting result was that the catalyst could be recovered easily without any loss and reused 4 times without loss in activity (HMF yield after 5th cycle was 88%).","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135006724","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 : 2023-01-01DOI: 10.1615/catalgreenchemeng.2023045782
J. Mane, Dhananjay S. Doke, Vidhya C. Ghantani, M. Dongare, S. Umbarkar
Calcium pyrophosphate and hydroxyapatite catalysts with varying C/P ratios have been previously used by our group for vapor phase dehydration of lactic acid to acrylic acid with almost 100% conversion and up to 78% acrylic acid selectivity. The activity was highly sensitive to acidity and basicity of the catalyst. Hence the catalyst with maximum activity, calcium pyrophosphate, was modified with MoO3 for modifying its acidity and to study its effect on product selectivity for lactic acid dehydration. The MoO3 modified calcium pyrophosphate with 5% MoO3 loading was used for vapor phase dehydration of lactic acid at 375°C using 50% lactic acid concentration with WHSV of 3 h-1. The activity was compared with nonmodified calcium pyrophosphate catalyst. Surprisingly, deoxygenation was predominant compared to dehydration. Acidity was observed to play a crucial role in product selectivity (i.e,. with less acidic support, calcium pyrophosphate with 5 wt% MoO3 showed more deoxygenation activity as compared to acidic support γ-Al2O3 as well as SiO2 with same MoO3 loading). Higher acidity led to formation of acetaldehyde as the only product. The results confirmed formation of propionic acid by deoxygenation of lactic acid using in situ generated hydrogen after decarboxylation of lactic acid to acetaldehyde.
{"title":"Effect of MoO3 loading on product selectivity for calcium pyrophosphate catalyzed vapor phase lactic acid dehydration","authors":"J. Mane, Dhananjay S. Doke, Vidhya C. Ghantani, M. Dongare, S. Umbarkar","doi":"10.1615/catalgreenchemeng.2023045782","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2023045782","url":null,"abstract":"Calcium pyrophosphate and hydroxyapatite catalysts with varying C/P ratios have been previously used by our group for vapor phase dehydration of lactic acid to acrylic acid with almost 100% conversion and up to 78% acrylic acid selectivity. The activity was highly sensitive to acidity and basicity of the catalyst. Hence the catalyst with maximum activity, calcium pyrophosphate, was modified with MoO3 for modifying its acidity and to study its effect on product selectivity for lactic acid dehydration. The MoO3 modified calcium pyrophosphate with 5% MoO3 loading was used for vapor phase dehydration of lactic acid at 375°C using 50% lactic acid concentration with WHSV of 3 h-1. The activity was compared with nonmodified calcium pyrophosphate catalyst. Surprisingly, deoxygenation was predominant compared to dehydration. Acidity was observed to play a crucial role in product selectivity (i.e,. with less acidic support, calcium pyrophosphate with 5 wt% MoO3 showed more deoxygenation activity as compared to acidic support γ-Al2O3 as well as SiO2 with same MoO3 loading). Higher acidity led to formation of acetaldehyde as the only product. The results confirmed formation of propionic acid by deoxygenation of lactic acid using in situ generated hydrogen after decarboxylation of lactic acid to acetaldehyde.","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81162946","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 : 2023-01-01DOI: 10.1615/catalgreenchemeng.2023049783
Prajeet Kadam, Dr. Amarsinh Jadhav, Onkar Gavade, Dr. Malhari Kulkarni, Dr. Dinesh Bhutada, Dr. Subramanian Radhakrishnan
In the present work, Jackfruit and coconut shell waste from natural resources are used to synthesize adsorbents by the carbonization method for the removal of methylene blue dye and impurities from wastewater. Absorbents from Jackfruit and coconut shells were synthesized at 550 °C for 4 h in the carbonization method and activated by acid treatment. Adsorbents synthesized from jackfruit and coconut shell waste were characterized by using techniques like BET, SEM, and XRD to study and compare their properties. This research concludes that jackfruit waste adsorbents act better than coconut shells and are similar to conventional ones. At adsorption parameters of 30 °C, pH= 7, 3-gram adsorbent quantity, reusable 3 times and a 24-hour contact period, for the absorption of dye and debris from wastewater jackfruit waste is preferable. Also, the qualities of traditional activated charcoal are contrasted with those of the jackfruit and coconut shell adsorbents. Purification of wastewater with jackfruit adsorbent was more than 96.3% as compared to coconut shell adsorbent with a 69.3% waste removal efficiency. The results demonstrated that jackfruit waste, due to its better structure, morphology and surface area would be the most effective adsorbent for removing methylene blue dye and contaminants from wastewater.
{"title":"\"Comparision of the efficacy of natural adsorbents from jack fruit and coconut shell waste for the adsorption of impurities of dye and water\"","authors":"Prajeet Kadam, Dr. Amarsinh Jadhav, Onkar Gavade, Dr. Malhari Kulkarni, Dr. Dinesh Bhutada, Dr. Subramanian Radhakrishnan","doi":"10.1615/catalgreenchemeng.2023049783","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2023049783","url":null,"abstract":"In the present work, Jackfruit and coconut shell waste from natural resources are used to synthesize adsorbents by the carbonization method for the removal of methylene blue dye and impurities from wastewater. Absorbents from Jackfruit and coconut shells were synthesized at 550 °C for 4 h in the carbonization method and activated by acid treatment. Adsorbents synthesized from jackfruit and coconut shell waste were characterized by using techniques like BET, SEM, and XRD to study and compare their properties. This research concludes that jackfruit waste adsorbents act better than coconut shells and are similar to conventional ones. At adsorption parameters of 30 °C, pH= 7, 3-gram adsorbent quantity, reusable 3 times and a 24-hour contact period, for the absorption of dye and debris from wastewater jackfruit waste is preferable. Also, the qualities of traditional activated charcoal are contrasted with those of the jackfruit and coconut shell adsorbents. Purification of wastewater with jackfruit adsorbent was more than 96.3% as compared to coconut shell adsorbent with a 69.3% waste removal efficiency. The results demonstrated that jackfruit waste, due to its better structure, morphology and surface area would be the most effective adsorbent for removing methylene blue dye and contaminants from wastewater.","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136053066","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 : 2022-01-01DOI: 10.1615/catalgreenchemeng.v5.i2.60
{"title":"INDEX VOLUME 5, 2022","authors":"","doi":"10.1615/catalgreenchemeng.v5.i2.60","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.v5.i2.60","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80199193","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 : 2022-01-01DOI: 10.1615/catalgreenchemeng.2022041460
A. Yadav, Prakash D. Vaidya
{"title":"Hydrogen production from steam butanol reforming over cobalt catalyst supported on ceria","authors":"A. Yadav, Prakash D. Vaidya","doi":"10.1615/catalgreenchemeng.2022041460","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2022041460","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72578552","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 : 2022-01-01DOI: 10.1615/catalgreenchemeng.2022043648
H. Jadhav, P. Gogate, U. Annapure
{"title":"Solvent free enzymatic transesterification for synthesis of 1,3-diferuloyl-2-capryl glycerol feruloylated designer lipid intensified using sonication","authors":"H. Jadhav, P. Gogate, U. Annapure","doi":"10.1615/catalgreenchemeng.2022043648","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2022043648","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"99 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83607676","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 : 2022-01-01DOI: 10.1615/catalgreenchemeng.2022041472
Swapnil A. Ghungrud, Prakash D. Vaidya
{"title":"Promotion of cobalt-containing hydrotalcite materials with potassium, ceria and zirconia for CO2 sorption-assisted reforming of butanol to H2","authors":"Swapnil A. Ghungrud, Prakash D. Vaidya","doi":"10.1615/catalgreenchemeng.2022041472","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2022041472","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78154192","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 : 2022-01-01DOI: 10.1615/catalgreenchemeng.2022039079
U. Gaikwad, G. Yadav
{"title":"Synergism of Novel Mesoporous Solid Acid Catalyst and Microwave Irradiation in Claisen-Schmidt Condensation of Benzaldehyde with Acetophenone to Chalcone","authors":"U. Gaikwad, G. Yadav","doi":"10.1615/catalgreenchemeng.2022039079","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2022039079","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"510 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85633133","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 : 2022-01-01DOI: 10.1615/catalgreenchemeng.2022044128
Prasad Chaudhari, N. Thombre, P. Gogate
{"title":"Synthesis of activated carbon from Styrene Divinyl Benzene polymer resin","authors":"Prasad Chaudhari, N. Thombre, P. Gogate","doi":"10.1615/catalgreenchemeng.2022044128","DOIUrl":"https://doi.org/10.1615/catalgreenchemeng.2022044128","url":null,"abstract":"","PeriodicalId":9651,"journal":{"name":"Catalysis in Green Chemistry and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73422036","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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