Article
Engineering, Chemical
Mohammed K. Al Mesfer, Mohd Danish, Mumtaj Shah
Summary: The optimization of hydrotalcite-derived Ni-Fe-Cu-based tri-metallic catalyst for methane catalytic decomposition was studied using the Taguchi method. The results revealed that the catalyst performance and deposited carbon nature depended on the catalyst's composition, with optimal reaction conditions leading to a 30% increase in catalyst performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Environmental
Danhua Mei, Xiaoqiang Shen, Shiyun Liu, Rusen Zhou, Xuchu Yuan, Zhiqiang Rao, Yifei Sun, Zhi Fang, Xuesen Du, Ying Zhou, Xin Tu
Summary: This study achieved plasma-catalytic dry reforming of biogas using Ni-based bimetallic catalysts, which resulted in high conversion, yield and selectivity of key gas products, and high fuel production efficiency (FPE). The coupling of DBD with 10Ni3Co showed the best reaction performance, and also helped suppress carbon deposition and reduce energy costs. The use of Ni-based catalysts allowed for tuning of product distribution, favoring the generation of C3-C4 hydrocarbons and syngas. The 10Ni3Co catalyst exhibited superior performance due to factors such as higher specific surface area, improved CO2 adsorption capability, strong metal-support interactions, enhanced reducibility, and Ni-Co alloy formation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Mumtaj Shah, Mohammed K. Al Mesfer, Mohd Danish
Summary: In this study, the performance of 10 wt.% Co-1 wt. % Rh/TiO2 catalysts with varying textural properties were investigated for the production of hydrogen and carbon nanotubes via methane decomposition. The results showed that the texture of the TiO2 support has a significant influence on the catalytic performance, and the optimal activity and stability can be achieved by controlling the calcination temperature and phase composition of TiO2. Furthermore, the phase composition of the catalyst also affects the formation of carbon nanotubes.
Article
Chemistry, Physical
Ahmed S. Al-Fatesh, Adel Abdelkader, Ahmed I. Osman, Mahmud S. Lanre, Anis H. Fakeeha, Mansour Alhoshan, Yousef M. Alanazi, Ahmed E. Awadallah, David W. Rooney
Summary: In this study, non-supported pure and mixed cobalt and iron oxide catalysts were synthesized using a simple, environmentally friendly preparation method in which water was the sole solvent. The results showed that the mixed oxide catalysts exhibit higher catalytic activity than the pure oxides, and the Fe: Co atomic ratio is the key factor in the catalytic activity of these mixed oxides. Among the catalysts tested, the 50Fe + 50Co catalyst showed the highest catalytic activity towards methane conversion, reaching about 52.6%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Luis Lopez-Rodriquez, Daniel G. Araiza, Diana G. Arcos, Antonio Gomez-Cortes, Gabriela Diaz
Summary: This study investigates the catalytic systems of Pt/CeO2 and bimetallic Cu-Pt/CeO2 catalysts supported on different CeO2 nano shapes (polyhedra, rods, and cubes) for hydrogen production from the methanol decomposition reaction. The properties of the bimetallic Cu-Pt/CeO2 samples were found to be support-morphology-dependent, with better copper and ceria reducibility in samples supported on polyhedra and rods. An improvement in oxygen vacancies was observed in the bimetallic system due to the interaction between copper and ceria. The bimetallic samples showed higher H-2 yield compared to platinum, making them suitable for hydrogen production from methanol decomposition.
Article
Chemistry, Physical
Hanan A. Ahmed, Ahmed E. Awadallah, Ateyya A. Aboul-Enein, Sanaa M. Solyman, Noha A. K. Aboul-Gheit
Summary: The study developed and examined bimetallic Ni-Mo catalysts supported on CeO2 and CeO2-SiO2 for CH4 decomposition, revealing the influence of SiO2 on catalytic efficiency. Ni-Mo/CeO2 catalyst demonstrated exceptional decomposition behavior and durability, with high hydrogen yield.
Article
Engineering, Environmental
Nan Zhang, Yichen Wu, Abdelrahman M. Awad, Emmanuel Doelsch, Charles-Francois de Lannoy
Summary: In this study, inexpensive Ni-Cu bimetallic catalytic membrane microreactors (CMMRs) were synthesized to catalytically degrade 4-nitrophenol (4-NP) and produce 4-aminophenol (4-AP). The flow-through reactions demonstrated enhanced mass transfer contributing to higher conversion, processing capacity, and reaction rate constant compared to batch conversion. The stability and enhanced activity of the CMMRs were attributed to the synergistic effects of the Ni-Cu bimetallic structure, metal-polydopamine interactions, and unique structure and high surface area of the catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Xingyi Lin, Hong Zhu, Min Huang, Chunsheng Wan, Dalin Li, Lilong Jiang
Summary: Composition-uniform Ni-Cu/Al2O3 alloy catalysts prepared from Ni-Cu-Al hydrotalcite-like compounds demonstrate enhanced catalytic activity for methane decomposition. Alloying Ni with an appropriate amount of Cu significantly improves catalytic performance and carbon yield, leading to the growth of carbon nanofibers with different morphologies.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Peng Wang, Hong Zhu, Min Huang, Chunsheng Wan, Dalin Li, Lilong Jiang
Summary: Ni-Fe/Al2O3 alloy catalysts produced from Ni3-xFexAl hydrotalcite-like compounds exhibit higher catalytic activity and carbon yield in CH4 decomposition compared to Ni3Al. The optimal alloy composition is Ni: Fe = 4:1, leading to a decreased carbon diameter in carbon nanotube formation. The sintering resistance of the uniform Ni-Fe alloy catalyst is beneficial for controlling carbon morphology.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Zhourong Xiao, Peng Li, Senlin Zhang, Jianmin Gu, Desong Wang
Summary: Metal-support interactions and their interfaces play a crucial role in catalytic activity and stability. In this study, different M2O3- (M=La, Al-) supported Ni catalysts were prepared using a citric acid-assisted sol-gel method. The catalysts were systematically characterized and their catalytic performance was evaluated for hydrogen or syngas production. The results show that Ni supported on La2O3 exhibits smaller particle size, stronger metal-support interaction, and higher ethanol conversion activity and stability compared to Al2O3 support. The Ni-La2O3 catalyst also shows good activity for methane dry reforming. The superior catalytic performance can be attributed to smaller particle size, abundant metal-support interfaces, higher nickel electron densities, abundant strong basic sites, and strong metal-support interactions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Theodoros Papalas, Evangelos Palamas, Andy N. Antzaras, Angeliki A. Lemonidou
Summary: This study successfully synthesized bimetallic Ni-Co oxygen carriers with ZrO2 as a structure stabilizer using a one-pot sol-gel auto-combustion method. The redox properties and catalytic activity of the reduced state were evaluated, showing that the reduced bimetallic materials exhibited higher reforming activity and stability compared to monometallic materials, with Co addition promoting the oxidation kinetics.
Article
Energy & Fuels
Fatemeh Zarei-Jelyani, Fatemeh Salahi, Mohammad Farsi, Mohammad Reza Rahimpour
Summary: Steam methane reforming is an important reaction for producing environmentally-friendly hydrogen from methane. In this study, Ni-Co co-impregnated catalysts were synthesized using a hollow sphere alumina support, leading to improved stability and performance. Among the catalysts tested, Ni-2-Co-1/H-Al2O3 showed the highest methane conversion and hydrogen yield at 700 ℃.
Article
Energy & Fuels
Lijian Wang, Kang Zhang, Yi Qiu, Huiyun Chen, Jie Wang, Zhihua Wang
Summary: The addition of Ru to SiO2-supported Ni catalysts enhances their activity and sulfur resistance, leading to superior catalytic performance in the HI decomposition reaction. The experimental trends are consistent with theoretical modeling, with Ni-Ru/SiO2 catalysts outperforming Ru-free Ni/SiO2 catalysts in terms of catalytic activity and sulfur tolerance.
Article
Chemistry, Applied
Saba Kazemi, Seyed Mehdi Alavi, Mehran Rezaei
Summary: A new type of spinel powder was used as a support for nickel-based catalysts in the thermal decomposition of methane to produce COx-free hydrogen. Various techniques were used to analyze the physicochemical characteristics of the samples. The results showed that the FeAl2O4-supported nickel catalyst had the highest stability and efficiency.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Hengzhou Liu, Jiaqi Yu, Yifu Chen, Jungkuk Lee, Wenyu Huang, Wenzhen Li
Summary: Electrocatalytic oxidative dehydrogenation (EOD) of aldehydes allows for the production of bipolar H-2 at ultra-low voltage with carboxylic acid co-generation. This study presents a simple galvanic replacement method to prepare CuM (M = Pt, Pd, Au, and Ag) bimetallic catalysts, enabling industrially relevant current densities in the EOD of furfural. The incorporation of noble metals onto the Cu surface and the subsequent enlargement of its surface area significantly improve the EOD performance, with CuPt achieving a record-high current density of 498 mA cm(-2) and a Faradaic efficiency of >80% to H-2 at a low cell voltage of 0.6 V. Further research is required to understand the synergistic effects of Cu-M on furfural EOD and enhance the catalyst stability, thus facilitating the future production of green hydrogen and carbon chemicals with practical rates and low-carbon footprints.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Daniel Torres, Sara Perez-Rodriguez, David Sebastian, Jose Luis Pinilla, Maria Jesus Lazaro, Isabel Suelves
Article
Chemistry, Physical
D. Torres, J. L. Pinilla, I Suelves
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Analytical
D. Torres, Y. Jiang, D. A. Sanchez-Monsalve, G. A. Leeke
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2020)
Article
Chemistry, Physical
E. Frecha, D. Torres, I Suelves, J. L. Pinilla
Summary: This study investigates the catalytic role of various graphene oxide morphologies in cellulose hydrolysis reaction, with GOQDs showing the highest catalytic activity. However, the behavior of GOQDs depends on the crystalline features of the starting cellulose and the degree of substrate-catalyst interaction.
Article
Chemistry, Physical
Juliana Alves Silva, Joao Batista Oliveira Santos, Daniel Torres, Jose Luis Pinilla, Isabel Suelves
Summary: Tierga and Ilmenite Fe-based ores are studied for the catalytic decomposition of methane for the first time. Tierga shows superior catalytic performance and stability at 800 degrees C. Using methane as a reducing agent results in high-quality carbon materials. The study concludes that Tierga has competitive performance in producing carbon dioxide-free hydrogen and solid carbon.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
D. Torres, S. Perez-Rodriguez, L. Cesari, C. Castel, E. Favre, V. Fierro, A. Celzard
Summary: Membrane processes are competitive in gas separation, while resin-derived carbon membranes have improved performance and are applied in processes such as hydrogen purification, air separation, natural gas/biogas sweetening, or carbon dioxide capture.
Article
Chemistry, Physical
Javier Quilez-Bermejo, Sara Perez-Rodriguez, Rafael Canevesi, Daniel Torres, Emilia Morallon, Diego Cazorla-Amoros, Alain Celzard, Vanessa Fierro
Summary: This study presents a post-functionalization method to enhance the catalytic properties of carbon materials for the oxygen reduction reaction (ORR) by selectively enriching activated carbons with nitrogen graphitic species. The research provides evidence for the key role of graphitic nitrogen and offers a low-cost and easily feasible synthesis route to improve the catalytic activity of carbon materials.
Article
Chemistry, Multidisciplinary
Esther Frecha, Javier Remon, Daniel Torres, Isabel Suelves, Jose Luis Pinilla
Summary: The direct conversion of cellulose into sugar alcohols using nickel catalysts supported on carbon nanofibers is an attractive chemical route for biomass valorization. The design of the catalyst plays a crucial role in determining its hydrogenation ability and thus the effectiveness of the conversion process. This study investigates the effects of different impregnation techniques on the properties of the catalysts, and establishes a link between these properties and their reactivity in the hydrolytic hydrogenation of cellobiose. The findings suggest that a compromise between the surface area and resistance against oxidation of the catalyst is crucial for achieving high conversion rates.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Applied
E. Frecha, J. Remon, D. Torres, I. Suelves, J. L. Pinilla
Summary: This study provides novel insights into the hydrothermal hydrogenation of cellulose over a carbon nanofibre supported Ni catalyst. The experimental results highlight the importance of process control to promote the transformation of cellulose to glucose and its subsequent hydrogenation to sorbitol, and reducing side reactions. By including additional mix-milling and increasing the H2 pressure, a high sorbitol yield of 62% was achieved, which is one of the best results reported in the literature.
Article
Engineering, Environmental
E. Frecha, D. Torres, J. Remon, R. Gammons, A. S. Matharu, I. Suelves, J. L. Pinilla
Summary: Carbon nanostructures provide a unique platform for the synthesis of novel catalysts for biomass conversion. In this study, a series of graphene oxide (GO)-based materials were prepared and their catalytic behavior was compared. It was found that the reactivity of the GO-catalyst was related to their degree of oxidation/exfoliation, and the use of microwave radiation enabled similar kinetic profiles with considerably less amount of catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Alejandro Ayala-Cortes, Daniel Torres, Esther Frecha, Pedro Arcelus-Arrillaga, Heidi Isabel Villafan-Vidales, Adriana Longoria, Jose Luis Pinilla, Isabel Suelves
Summary: Using concentrated solar energy as a heat source for hydrothermal liquefaction shows potential in improving the efficiency and reducing the environmental impact compared to fossil fuels. The study successfully upgraded solar bio-oils obtained from Agave and corncob by hydrodeoxygenation, resulting in high yields and improved properties.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Daniel Torres, Victor Medina Bailon, Judith Dominguez Mendoza, Eric Masson, Guillermo Gonzalez-Sanchez, Lourdes Ballinas-Casarrubias, Salima Mabrouk, Raphael Schneider, Alain Celzard, Vanessa Fierro
Summary: In this study, flax by-products were subjected to hydrothermal treatment to identify potential applications for the resulting products. It was found that severities above 4.9 were optimal in terms of calorific value, production of organic products, photoluminescence quantum yield of carbon quantum dots, and CO2 capture by the resulting carbons.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
E. Ochoa, D. Torres, J. L. Pinilla, I. Suelves
Summary: The hydrothermal impregnation method resulted in Mo2C/CNF catalysts with the highest surface atomic Mo/C ratio, indicating a higher specific surface concentration of both the Mo precursor and carbide on the support. This led to the largest guaiacol conversion and HDO ratio in the HDO reaction at 300 degrees C and 34 bar H-2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
D. Torres, J. L. Pinilla, I. Suelves
Summary: Using Ni-Cu/Al2O3 catalyst, the thermal decomposition of propane was studied to produce CO2-free hydrogen and high value-added carbon nanofibers. It was found that under specific temperature and space velocity conditions, high-quality CNF and H2 without CO2 can be efficiently produced.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
D. Torres, Y. Jiang, D. A. Sanchez Monsalve, G. A. Leeke
Summary: The study investigated the pyrolysis of urban chlorine-containing polyolefinic plastic waste with retention of HCl through the use of different chemical removers and adsorbents. The highest chlorine retention was achieved with a zeolite used in the hot filter, resulting in waxier pyrolytic oils with a higher degree of branching.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)