S. Pavlova, Y. Fedorova, A. Ishchenko, M. Melgunov, E. Melgunova, M. Simonov, V. Rogov, T. Krieger, V. Sadykov, A. Roger
Abstract The ordered mesoporous Mg- and Ni-Mg-alumina samples of general formula xwt%Mg-Al2O3 and ywt%Nixwt% Mg-Al2O3(x, y = 5, 10 % wt) have been prepared by the one-pot evaporation induced self-assembly (EISA) method using Pluronic P123 as a template. The textural and structural properties of the prepared samples have been characterized by N2adsorption-desorption analysis, BET, XRD, TEM with EDX, HAADF-STEM, and H2-TPR. The samples calcined at 700°C had an ordered mesoporous structure with a SSA of 170-250 m2/g, a pore volume of 0.5-0.64 cm3/g and a narrow distribution of the pore size (mean 12-16 nm). For the catalysts prepared by the one-pot EISA method, the size of the metal Ni particles was in the range of 3-12 nm and was conditioned by their confinement in the mesopores and the interaction with MgO and Al2O3. Testing in methane dry reforming in the 15v.% CH4+ 15v.%CO2feed, with He balance, at 650-750°C and the contact time of 0.015 s has shown the higher activity and stability of the ordered mesoporous 10w%Ni- 10w%Mg-Al2O3catalysts prepared by the one-pot method as compared with the catalyst of the same composition obtained by impregnation.
{"title":"Ni-containing catalysts based on ordered mesoporous MgO–Al2O3for methane dry reforming","authors":"S. Pavlova, Y. Fedorova, A. Ishchenko, M. Melgunov, E. Melgunova, M. Simonov, V. Rogov, T. Krieger, V. Sadykov, A. Roger","doi":"10.1515/cse-2018-0008","DOIUrl":"https://doi.org/10.1515/cse-2018-0008","url":null,"abstract":"Abstract The ordered mesoporous Mg- and Ni-Mg-alumina samples of general formula xwt%Mg-Al2O3 and ywt%Nixwt% Mg-Al2O3(x, y = 5, 10 % wt) have been prepared by the one-pot evaporation induced self-assembly (EISA) method using Pluronic P123 as a template. The textural and structural properties of the prepared samples have been characterized by N2adsorption-desorption analysis, BET, XRD, TEM with EDX, HAADF-STEM, and H2-TPR. The samples calcined at 700°C had an ordered mesoporous structure with a SSA of 170-250 m2/g, a pore volume of 0.5-0.64 cm3/g and a narrow distribution of the pore size (mean 12-16 nm). For the catalysts prepared by the one-pot EISA method, the size of the metal Ni particles was in the range of 3-12 nm and was conditioned by their confinement in the mesopores and the interaction with MgO and Al2O3. Testing in methane dry reforming in the 15v.% CH4+ 15v.%CO2feed, with He balance, at 650-750°C and the contact time of 0.015 s has shown the higher activity and stability of the ordered mesoporous 10w%Ni- 10w%Mg-Al2O3catalysts prepared by the one-pot method as compared with the catalyst of the same composition obtained by impregnation.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"38 1","pages":"59 - 66"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81224350","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}
O. Netskina, T. N. Filippov, O. V. Komova, V. Simagina
Abstract Sodium borohydride tablets have been employed as hydrogen-storage materials. Hydrogen release was performed by acidic hydrolysis where solutions of sulfuric and hydrochloric acids were added to the tablets, and by catalytic hydrolysis where water was added tablets of solid-state NaBH4/Co composite. In acidic solutions hydrogen evolution occurred instantaneously, and at high concentrations of acids the releasing hydrogen contained an admixture of diborane. Hydrogen evolution from the solidstate NaBH4/Co composite proceeded at a uniform rate of 13.8±0.1 cm3·min-1, water vapor being the only impurity in the evolving gas.
{"title":"Hydrogen generation by both acidic and catalytic hydrolysis of sodium borohydride","authors":"O. Netskina, T. N. Filippov, O. V. Komova, V. Simagina","doi":"10.1515/cse-2018-0006","DOIUrl":"https://doi.org/10.1515/cse-2018-0006","url":null,"abstract":"Abstract Sodium borohydride tablets have been employed as hydrogen-storage materials. Hydrogen release was performed by acidic hydrolysis where solutions of sulfuric and hydrochloric acids were added to the tablets, and by catalytic hydrolysis where water was added tablets of solid-state NaBH4/Co composite. In acidic solutions hydrogen evolution occurred instantaneously, and at high concentrations of acids the releasing hydrogen contained an admixture of diborane. Hydrogen evolution from the solidstate NaBH4/Co composite proceeded at a uniform rate of 13.8±0.1 cm3·min-1, water vapor being the only impurity in the evolving gas.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"30 1","pages":"41 - 48"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91163808","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}
Amit Kumar, S. Singhal, Shilpi Aggarwal, R. P. Badoni, A. Sharma
Abstract In the present manuscript, the effect of the synthetic route on the properties of SiO2-ZrO2 has been evaluated. Co-precipitation, sol-gel and microwave methods were adopted for synthesizing the structured oxide. The properties of the final products such as surface morphology, crystallinity, surface area, pore volume and size, particle size and total acidity were examined using standard instrumentation like Fe-SEM, XRD, BET and TPD. The results revealed that the mixed oxides were mesoporous in nature with a high BET surface area (315- 435m2/g). Among various methods, the microwave route achieved the highest surface area (433m2/g), pore volume (0.70cc/g) and pore size (6.50nm). The total acidity of the sample synthesized by the microwave reactor was also higher (0.296mmol/g) than that resulting from other methods. Results conclude that microwave method is a suitable choice for synthesizing the structured oxides with desirable properties.
{"title":"Influence of Synthetic Approach of SiO2-ZrO2 Materials","authors":"Amit Kumar, S. Singhal, Shilpi Aggarwal, R. P. Badoni, A. Sharma","doi":"10.1515/cse-2018-0005","DOIUrl":"https://doi.org/10.1515/cse-2018-0005","url":null,"abstract":"Abstract In the present manuscript, the effect of the synthetic route on the properties of SiO2-ZrO2 has been evaluated. Co-precipitation, sol-gel and microwave methods were adopted for synthesizing the structured oxide. The properties of the final products such as surface morphology, crystallinity, surface area, pore volume and size, particle size and total acidity were examined using standard instrumentation like Fe-SEM, XRD, BET and TPD. The results revealed that the mixed oxides were mesoporous in nature with a high BET surface area (315- 435m2/g). Among various methods, the microwave route achieved the highest surface area (433m2/g), pore volume (0.70cc/g) and pore size (6.50nm). The total acidity of the sample synthesized by the microwave reactor was also higher (0.296mmol/g) than that resulting from other methods. Results conclude that microwave method is a suitable choice for synthesizing the structured oxides with desirable properties.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"19 1","pages":"34 - 40"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75048175","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}
A. Brichkov, S. Kuznetsova, E. Mongush, Viktoriya U. Brichkova, A. Zabolotskaya, T. Glazneva
Abstract This article presents the results of the thermal analysis of dried colloidal solutions based on zinc nitrate with changes in tetraethoxysilane (TEOS) content. The main stages of the thermal decomposition of the dried sols were established and the activation energies of each stage were determined based on the results of thermogravimetric measurements using the Erofeev-Kolmogorov approach. For each stage, the products of thermal destruction in the gas phase were determined by mass-spectrometry. It was shown that the chemical decomposition in all samples started at a temperature above 200°C, and the temperature of zinc hydroxonitrate decomposition increased with increasing TEOS content in the ash, while the activation energy of that process decreased. X-ray diffraction analysis revealed that the thermal decomposition of dried sols at 600°C resulted in the formation of mixtures of ZnO in hexagonal syngony with amorphous SiO2 in amounts from 10 to 50 wt%.
{"title":"Formation of Zn- and Si-Based Oxide Systems: Analysis of Temperature Dependence of the Energy State","authors":"A. Brichkov, S. Kuznetsova, E. Mongush, Viktoriya U. Brichkova, A. Zabolotskaya, T. Glazneva","doi":"10.1515/cse-2018-0004","DOIUrl":"https://doi.org/10.1515/cse-2018-0004","url":null,"abstract":"Abstract This article presents the results of the thermal analysis of dried colloidal solutions based on zinc nitrate with changes in tetraethoxysilane (TEOS) content. The main stages of the thermal decomposition of the dried sols were established and the activation energies of each stage were determined based on the results of thermogravimetric measurements using the Erofeev-Kolmogorov approach. For each stage, the products of thermal destruction in the gas phase were determined by mass-spectrometry. It was shown that the chemical decomposition in all samples started at a temperature above 200°C, and the temperature of zinc hydroxonitrate decomposition increased with increasing TEOS content in the ash, while the activation energy of that process decreased. X-ray diffraction analysis revealed that the thermal decomposition of dried sols at 600°C resulted in the formation of mixtures of ZnO in hexagonal syngony with amorphous SiO2 in amounts from 10 to 50 wt%.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"6 1","pages":"28 - 33"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89112514","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}
Abstract The demand for alternative fuels having low greenhouse gases emission is continuously growing worldwide. Therefore it is preferred to produce new, waste originated components. One option is the recycling of plastic waste with cracking. The produced hydrocarbon fraction is not suitable for fuels thus it is important to improve its quality. The aim of our experimental work was to study the quality improvement of this cracked fraction (PPCGO) and crude oil based middle distillates (different composition) with co-processing. Our goal was to produce high quality diesel fuel blending components. We studied the effect of process parameters on the quality of products. Ni (2.3%) Mo (11.0%) P (2.3%)/Al2O3 catalyst was used. During the experiments we studied the hydrogenation of olefins, saturation of aromatics and desulphurization. The hydrogenation of olefins was practically complete at 300°C. It took place at significantly higher speed than the desulphurization reactions. In case of light gas oil feedstock the products had significantly lower sulphur contents; below 10 mg/kg already at 340°C. We determined that the cracked fraction had beneficial effect on the performance properties of the products. In case of all feedstock combinations, we found process parameters which can be used to produce high-quality diesel fuel blending components on the tested catalyst.
全球对低温室气体排放替代燃料的需求不断增长。因此，最好是生产新的、源自废物的部件。一种选择是回收有裂缝的塑料垃圾。所产生的烃类馏分不适合用作燃料，因此提高其质量具有重要意义。本实验的目的是研究通过协同处理提高该裂化馏分(PPCGO)和不同组成的原油基中间馏分的质量。我们的目标是生产高质量的柴油混合部件。研究了工艺参数对产品质量的影响。采用Ni (2.3%) Mo (11.0%) P (2.3%)/Al2O3催化剂。实验研究了烯烃的加氢反应、芳烃的饱和反应和脱硫反应。烯烃的氢化反应在300℃时基本完成。它的发生速度明显快于脱硫反应。以轻质油为原料，产品含硫量显著降低;在340°C时已低于10mg /kg。结果表明，裂化部分对产品的性能有良好的影响。在所有原料组合的情况下，我们找到了可用于在测试催化剂上生产高质量柴油混合组分的工艺参数。
{"title":"Catalytic quality improvement of waste polyolefin originated fractions","authors":"O. Tóth, A. Holló, J. Hancsók","doi":"10.1515/cse-2018-0002","DOIUrl":"https://doi.org/10.1515/cse-2018-0002","url":null,"abstract":"Abstract The demand for alternative fuels having low greenhouse gases emission is continuously growing worldwide. Therefore it is preferred to produce new, waste originated components. One option is the recycling of plastic waste with cracking. The produced hydrocarbon fraction is not suitable for fuels thus it is important to improve its quality. The aim of our experimental work was to study the quality improvement of this cracked fraction (PPCGO) and crude oil based middle distillates (different composition) with co-processing. Our goal was to produce high quality diesel fuel blending components. We studied the effect of process parameters on the quality of products. Ni (2.3%) Mo (11.0%) P (2.3%)/Al2O3 catalyst was used. During the experiments we studied the hydrogenation of olefins, saturation of aromatics and desulphurization. The hydrogenation of olefins was practically complete at 300°C. It took place at significantly higher speed than the desulphurization reactions. In case of light gas oil feedstock the products had significantly lower sulphur contents; below 10 mg/kg already at 340°C. We determined that the cracked fraction had beneficial effect on the performance properties of the products. In case of all feedstock combinations, we found process parameters which can be used to produce high-quality diesel fuel blending components on the tested catalyst.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"18 1","pages":"12 - 18"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82024774","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}
Oman Zuas, H. Budiman, D. Mansur, Muhammad Rizky Mulyana
Abstract This paper reported the method development and validation of a gas chromatography with thermal conductivity detector (GC-TCD) method for the measurement of the gaseous products of hydrodeoxygenation (HDO). The method validation parameters include selectivity, precision (repeatability and reproducibility), accuracy, linearity, limit of detection (LoD), limit of quantitation (LoQ), and robustness. The results showed that the developed method was able to separate the target components (H2, CO2, CH4 and CO) from their mixtures without any special sample treatment. The validated method was selective, precise, accurate, and robust. Application of the developed and validated GC-TCD method to the measurement of by-product components of HDO of bio-oil revealed a good performance with relative standard deviation (RSD) less than 1.0% for all target components, implying that the process of method development and validation provides a trustworthy way of obtaining reliable analytical data.
{"title":"Measurement of HDO Products Using GC-TCD: Towards Obtaining Reliable Analytical Data","authors":"Oman Zuas, H. Budiman, D. Mansur, Muhammad Rizky Mulyana","doi":"10.1515/cse-2018-0001","DOIUrl":"https://doi.org/10.1515/cse-2018-0001","url":null,"abstract":"Abstract This paper reported the method development and validation of a gas chromatography with thermal conductivity detector (GC-TCD) method for the measurement of the gaseous products of hydrodeoxygenation (HDO). The method validation parameters include selectivity, precision (repeatability and reproducibility), accuracy, linearity, limit of detection (LoD), limit of quantitation (LoQ), and robustness. The results showed that the developed method was able to separate the target components (H2, CO2, CH4 and CO) from their mixtures without any special sample treatment. The validated method was selective, precise, accurate, and robust. Application of the developed and validated GC-TCD method to the measurement of by-product components of HDO of bio-oil revealed a good performance with relative standard deviation (RSD) less than 1.0% for all target components, implying that the process of method development and validation provides a trustworthy way of obtaining reliable analytical data.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"236 1","pages":"1 - 11"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78820573","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}
T. Larina, Yulia Fedorova, T. Krieger, A. Ishchenko, T. Glazneva, E. Sadovskaya, N. Eremeev, V. Sadykov
Abstract Mixed nanocrystalline ceria-zirconia oxides doped with praseodymium containing 5, 7.5, 10, and 12.5 wt. % nickel were prepared by the incipient wetness impregnation of the oxide support. Complex physicochemical characterization by X-ray diffraction analysis, ultraviolet-visible diffuse reflectance spectroscopy, high resolution transmission electron microscopy and Fourier-transform infrared spectroscopy of adsorbed CO revealed that the nickelcontaining samples are comprised of a solid solution of praseodymium, cerium and zirconium oxides with the fluorite structure as well as nickel oxide particles with a size up to 100 nm. All prepared nanocomposite catalysts show a high catalytic activity in the water-gas shift reaction. The optimum content of nickel in the catalyst providing the maximum activity was found to be 10 wt. %. A high oxygen mobility in these catalysts estimated by the temperature-programmed oxygen isotope heteroexchange with C18O2 provides required coking stability. To eliminate local overheating of the catalyst and decrease the pressure drop in the reactor, as required for further up-scaling, the active component was supported on a metal plate made of Ni-Al foam alloy. At a fixed contact time, the same level of CO conversion with a fraction of the active component was achieved with an approximately 50 wt% loading on the support.
{"title":"Synthesis, physicochemical and catalytic properties of Ni/PrCeZrO catalysts for water-gas shift reaction","authors":"T. Larina, Yulia Fedorova, T. Krieger, A. Ishchenko, T. Glazneva, E. Sadovskaya, N. Eremeev, V. Sadykov","doi":"10.1515/cse-2017-0012","DOIUrl":"https://doi.org/10.1515/cse-2017-0012","url":null,"abstract":"Abstract Mixed nanocrystalline ceria-zirconia oxides doped with praseodymium containing 5, 7.5, 10, and 12.5 wt. % nickel were prepared by the incipient wetness impregnation of the oxide support. Complex physicochemical characterization by X-ray diffraction analysis, ultraviolet-visible diffuse reflectance spectroscopy, high resolution transmission electron microscopy and Fourier-transform infrared spectroscopy of adsorbed CO revealed that the nickelcontaining samples are comprised of a solid solution of praseodymium, cerium and zirconium oxides with the fluorite structure as well as nickel oxide particles with a size up to 100 nm. All prepared nanocomposite catalysts show a high catalytic activity in the water-gas shift reaction. The optimum content of nickel in the catalyst providing the maximum activity was found to be 10 wt. %. A high oxygen mobility in these catalysts estimated by the temperature-programmed oxygen isotope heteroexchange with C18O2 provides required coking stability. To eliminate local overheating of the catalyst and decrease the pressure drop in the reactor, as required for further up-scaling, the active component was supported on a metal plate made of Ni-Al foam alloy. At a fixed contact time, the same level of CO conversion with a fraction of the active component was achieved with an approximately 50 wt% loading on the support.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"75 1","pages":"73 - 82"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80377061","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}
Szabina Tomasek, Z. Varga, A. Holló, N. Miskolczi, J. Hancsók
Abstract The harmful effects of aviation can only be reduced by using alternative fuels with excellent burning properties and a high hydrogen content in the constituent molecules. Due to increasing plastic consumption the amount of the plastic waste is also higher. Despite the fact that landfill plastic waste has been steadily reduced, the present scenario is not satisfactory. Therefore, the aim of this study is to produce JET fuel containing an alternative component made from straight-run kerosene and the waste polyethylene cracking fraction. We carried out our experiments on a commercial NiMo/Al2O3/P catalyst at the following process parameters: T=200-300°C, P=40 bar, LHSV=1.0-3.0 h-1, hydrogen/hydrocarbon ratio= 400 Nm3/m3. We investigated the effects of the feedstocks and the process parameters on the product yields, the hydrodesulfurization and hydrodearomatization efficiencies, and the main product properties. The liquid product yields varied between 99.7-99.8%. As a result of the hydrogenation the sulfur (1-1780 mg/kg) and the aromatic contents (9.0-20.5%) of the obtained products and the values of their smoke points (26.0-34.7 mm) fulfilled the requirements of JET fuel standard. Additionally, the concentration of paraffins increased in the products and the burning properties were also improved. The freezing points of the products were higher than -47°C, therefore product blending is needed.
{"title":"Production of JET fuel containing molecules of high hydrogen content","authors":"Szabina Tomasek, Z. Varga, A. Holló, N. Miskolczi, J. Hancsók","doi":"10.1515/cse-2017-0008","DOIUrl":"https://doi.org/10.1515/cse-2017-0008","url":null,"abstract":"Abstract The harmful effects of aviation can only be reduced by using alternative fuels with excellent burning properties and a high hydrogen content in the constituent molecules. Due to increasing plastic consumption the amount of the plastic waste is also higher. Despite the fact that landfill plastic waste has been steadily reduced, the present scenario is not satisfactory. Therefore, the aim of this study is to produce JET fuel containing an alternative component made from straight-run kerosene and the waste polyethylene cracking fraction. We carried out our experiments on a commercial NiMo/Al2O3/P catalyst at the following process parameters: T=200-300°C, P=40 bar, LHSV=1.0-3.0 h-1, hydrogen/hydrocarbon ratio= 400 Nm3/m3. We investigated the effects of the feedstocks and the process parameters on the product yields, the hydrodesulfurization and hydrodearomatization efficiencies, and the main product properties. The liquid product yields varied between 99.7-99.8%. As a result of the hydrogenation the sulfur (1-1780 mg/kg) and the aromatic contents (9.0-20.5%) of the obtained products and the values of their smoke points (26.0-34.7 mm) fulfilled the requirements of JET fuel standard. Additionally, the concentration of paraffins increased in the products and the burning properties were also improved. The freezing points of the products were higher than -47°C, therefore product blending is needed.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"1 1","pages":"52 - 58"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79043690","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}
A. I. Nizovskii, A. V. Kulikov, M. Trenikhin, V. Bukhtiyarov
Abstract Reactivity of commercial aluminium alloys activated by the liquid eutectic alloy (76 wt.% of Ga, 24 wt.% of In, tm = 15.9°C) in the breakdown of water to form hydrogen was studied. It was shown that the efficiency of hydrogen isolation is determined by the grain-boundary structure of the initial aluminium alloys. The final activated product is an efficient reagent for obtaining hydrogen when interacting with water and can be used as a material for compact hydrogen cartridges.
{"title":"Material for Compact Hydrogen Cartridges Based on Commercial Aluminium Alloys Activated by Ga-In Eutectics","authors":"A. I. Nizovskii, A. V. Kulikov, M. Trenikhin, V. Bukhtiyarov","doi":"10.1515/cse-2017-0010","DOIUrl":"https://doi.org/10.1515/cse-2017-0010","url":null,"abstract":"Abstract Reactivity of commercial aluminium alloys activated by the liquid eutectic alloy (76 wt.% of Ga, 24 wt.% of In, tm = 15.9°C) in the breakdown of water to form hydrogen was studied. It was shown that the efficiency of hydrogen isolation is determined by the grain-boundary structure of the initial aluminium alloys. The final activated product is an efficient reagent for obtaining hydrogen when interacting with water and can be used as a material for compact hydrogen cartridges.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"38 1","pages":"62 - 66"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78982441","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}
N. V. Shtertser, L. Plyasova, E. V. Dokuchits, T. Minyukova, T. M. Yurieva
Abstract Decomposition of mixed Cu-Fe-Cr hydroxycarbonates was investigated by thermal analysis and in situ XRD and FTIR. TGA and DTA showed that increased preheating temperature removes modifying anions and decreases the spinel crystallization temperature. A disordered oxide phase containing carbonate is initially formed. The carbonate contents and crystallization temperature decreases depend on the Fe3+/Cr3+ ratio. The residual anion content may affect interlayer and interblock distances in this amorphous phase, changing the spinel crystallization temperature. Understanding the modifying anion effects on the spinel crystallization makes it possible to select the thermal treatment.
{"title":"Thermal decomposition of hydroxycarbonate Cu-Fe-Cr spinel precursors","authors":"N. V. Shtertser, L. Plyasova, E. V. Dokuchits, T. Minyukova, T. M. Yurieva","doi":"10.1515/cse-2017-0011","DOIUrl":"https://doi.org/10.1515/cse-2017-0011","url":null,"abstract":"Abstract Decomposition of mixed Cu-Fe-Cr hydroxycarbonates was investigated by thermal analysis and in situ XRD and FTIR. TGA and DTA showed that increased preheating temperature removes modifying anions and decreases the spinel crystallization temperature. A disordered oxide phase containing carbonate is initially formed. The carbonate contents and crystallization temperature decreases depend on the Fe3+/Cr3+ ratio. The residual anion content may affect interlayer and interblock distances in this amorphous phase, changing the spinel crystallization temperature. Understanding the modifying anion effects on the spinel crystallization makes it possible to select the thermal treatment.","PeriodicalId":9642,"journal":{"name":"Catalysis for Sustainable Energy","volume":"60 1","pages":"67 - 72"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84008036","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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