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, Applied
Marco Pizzolato, Giulia Da Pian, Elena Ghedini, Alessandro Di Michele, Federica Menegazzo, Giuseppe Cruciani, Michela Signoretto
Summary: The effects of vanadium promotion on gamma-alumina supported nickel catalysts for methane dry reforming were investigated. The introduction of vanadium was crucial to hinder catalyst deactivation by coke deposition. The formation of nanotubes was reduced and hydrogen yield increased. When coupled with calcium, selectivity toward hydrogen/syngas production was improved. Under concentrated gases, vanadium was fundamental for a higher activity, with an increase of 30% and 15% in CH4 and CO2 conversions compared with the non-doped catalyst.
Article
Chemistry, Multidisciplinary
Intan Clarissa Sophiana, Ferry Iskandar, Hary Devianto, Norikazu Nishiyama, Yogi Wibisono Budhi
Summary: Dry reforming of methane was studied using high-ratio zirconia in ceria-zirconia-mixed oxide-supported Ni catalysts. The effects of the catalyst support and Ni composition on the catalyst performance were investigated. The results showed that the 10%Ni/CeZrO2 catalyst exhibited the highest catalytic performance, with a high H-2/CO ratio indicating superior hydrogen production.
Article
Chemistry, Physical
Fernando Morales Anzures, Pastora Salinas Hernandez, Gilberto Mondragon Galicia, Albina Gutierrez Martinez, Francisco Tzompantzi Morales, Mario A. Romero Romo, Raul Perez Hernandez
Summary: The study found that different ZrO2 contents have different effects on the catalytic activity of the mixed oxide supports. For example, 5 wt% of ZrO2 in the catalyst led to an increase in medium strength basic sites and specific surface area, resulting in the best performance in DRM.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Andre L. A. Marinho, Fabio S. Toniolo, Fabio B. Noronha, Florence Epron, Daniel Duprez, Nicolas Bion
Summary: Ni-based mesoporous mixed CeO2-Al2O3 oxide catalysts prepared by one pot EISA method show high activity and stability in dry reforming of methane, attributed to the confinement of Ni particles and the inhibition of carbon deposition.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Daniel G. Araiza, Diana G. Arcos, Antonio Gomez-Cortes, Gabriela Diaz
Summary: The addition of Pt improved the catalytic activity and stability of nickel-ceria catalysts, while bimetallic Pt-Ni/CeO2 catalysts showed stable performance and higher H-2/CO ratio compared to monometallic samples.
Article
Chemistry, Physical
Yaning Wang, Rongjun Zhang, Binhang Yan
Summary: In this study, Ni/Ce0.9Eu0.1O1.95 catalysts with better activity and enhanced stability were synthesized for dry reforming of methane. The catalysts exhibited stronger lattice oxygen mobility, higher oxygen storage capacity, and a strong metal-support interaction, which contributed to the reduction of carbon deposition and sintering. As a result, the catalyst achieved a balance between the rate of carbon generation and carbon consumption, leading to improved overall catalytic performance.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Marcin Cichy, Monika Panczyk, Grzegorz Slowik, Witold Zawadzki, Tadeusz Borowiecki
Summary: Methane reforming with CO2 is a hot research topic due to the increasing demand for new hydrogen sources. In this study, a series of commercial nickel catalysts supported on a-Al2O3 and modified with different amounts of rhenium were investigated. The addition of rhenium positively influenced the stability and activity of the catalyst, and the formation of Ni-Re alloy played a significant role in enhancing its properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yu Shi, Shiwei Wang, Yiming Li, Fan Yang, Hongbo Yu, Yuting Chu, Tong Li, Hongfeng Yin
Summary: By adjusting the ratio of metallic nickel to nickel phosphides, the properties of the catalyst were changed to investigate the synergistic effect of metallic nickel and nickel phosphides in dry methane reforming. It was found that the presence of phosphorus increased the dispersion of metallic nickel and its interaction with the alumina support, resulting in reduced carbon deposition.
Article
Chemistry, Multidisciplinary
Jeongmin Kim, Jeong-Cheol Seo, Won-Jun Jang, Kyubock Lee
Summary: The effects of Sr incorporation over Ni/Al2O3 catalysts on the dry reforming of methane were investigated. It was found that Sr significantly improved the stability and resistance to carbon formation of the catalysts. The Ni-EXS/Sr-Al catalyst exhibited the best performance with the smallest crystal size growth and coking rate.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Chemical
Camilla Daniela Moura-Nickel, Jessica Tatianne Ortiz Florenciano, Gidiane Scaratti, Regina de Fatima Peralta Muniz Moreira, Humberto Jorge Jose
Summary: The coke deposition deactivating catalyst is a challenge during reforming processes. However, the use of in situ CO2 for coke gasification at 650-700 degrees C can recover the catalytic activity, while temperature higher than 700 degrees C may cause deactivation by sintering. The regeneration method using CO2 is an excellent alternative to traditional air oxidation reactions for removing coke, as it not only produces useful CO but also allows the maintenance of reactor operating conditions.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Wenqing Zeng, Li Li, Mouxiao Song, Xueshuang Wu, Guiying Li, Changwei Hu
Summary: This study finds that hydrogen treatment enhances catalytic activity and stability by forming small homogeneous nickel particles, while nitrogen and air treatment decreases activity and causes carbon accumulation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Amir Mosayebi, Mohammad Hosein Eghbal Ahmadi, Mohammad Hamidizirasefi
Summary: This study evaluated the influences of different transition metals (Fe, Cu, and Zn) addition to Ni/Ce-Al2O3 catalyst on the combined steam and dry reforming of methanol (CSDRM) reaction. The results showed that the addition of transition metals improved the thermal stability, coke deposition, reducibility, and catalytic activity of the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Zhoufeng Bian, Wenqi Zhong, Yang Yu, Zhigang Wang, Bo Jiang, Sibudjing Kawi
Summary: Catalysts of Ni supported on home-made mesoporous alumina exhibited high activity and stability in DRM, with NiAl2O4 spinel structure contributing to improved performance. Control of calcination temperature is crucial for catalyst properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Juntian Niu, Yalan Wang, Shirley E. Liland, Samuel K. Regli, Jia Yang, Kumar R. Rout, Jun Luo, Magnus Ronning, Jingyu Ran, De Chen
Summary: By introducing Pt atoms into the surface of nickel catalysts, an enhanced active and stable Ni-based catalyst for methane dry reforming reaction was synthesized. The bimetallic Pt-Ni catalysts simultaneously enhance activity, increase H2/CO ratio, and improve stability by resisting carbon deposition. Density-functional theory calculations explained the higher coke resistance of Pt-Ni catalysts compared to monometallic samples.
Article
Chemistry, Applied
L. Consentino, Giuseppe Pantaleo, V. La Parola, C. Migliore, E. La Greca, Leonarda Francesca Liotta
Summary: Mn-WO3/TiO2 catalysts with different Mn loadings (1.5-3-12 wt%) were synthesized and compared with 8wt%WO3/TiO2 and bare MnOx oxide. The 1.5wt%Mn-8wt%WO3/TiO2 catalyst exhibited the highest performance in NO conversion and N-2 selectivity, with good thermal stability. The substitution of toxic vanadium with MnOx in the 1.5wt%Mn-8wt%WO3/TiO2 catalyst is an important achievement in improving environmental sustainability.
TOPICS IN CATALYSIS
(2023)
Article
Biochemistry & Molecular Biology
Noureddine Touach, Abdellah Benzaouak, Jamil Toyir, Youssra El Hamdouni, Mohammed El Mahi, El Mostapha Lotfi, Najoua Labjar, Mohamed Kacimi, Leonarda Francesca Liotta
Summary: Microbial fuel cells (MFCs) offer a sustainable way to convert organic matter into electricity through microorganisms. This study explores the potential of ferroelectric perovskite materials as non-precious photocatalysts for MFC cathode construction. The results show that BaTiO3 nanoparticles have strong absorption at 285 nm and their photocatalytic activity is greatly enhanced under UV-visible light.
Article
Biochemistry & Molecular Biology
Chiara Aliotta, Maria Costa, Leonarda Francesca Liotta, Valeria La Parola, Giuliana Magnacca, Francesca Deganello
Summary: Two La0.25Ba0.25Sr0.5Co0.8Fe0.2O3-delta-based perovskite compounds were synthesized by solution combustion method and compared with Ba0.5Sr0.5Co0.8Fe0.2O3-delta and La0.5Sr0.5Co0.8Fe0.2O3-delta perovskites for their potential as cathodes in Solid Oxide Fuel Cells. Calcination at 900 degrees C resulted in a bi-perovskite heterostructure, while higher temperatures led to a single-phase perovskite. Co-doping the A-site of perovskites with barium and lanthanum improved the oxygen vacancies' availability and redox properties, reducing the total resistance.
Article
Polymer Science
Cristina Scolaro, Leonarda Francesca Liotta, Carla Calabrese, Giuseppe Marci, Annamaria Visco
Summary: Formulations of environmentally compatible silicone-based antifouling have been characterized. The activity of these powders is linked to the nanometric size of the particles and the homogeneous dispersion of the metal on the substrate. The presence of silver and titania antifouling filler improves the adhesion and compactness of the coating.
Article
Chemistry, Physical
Eleonora La Greca, Tamara S. Kharlamova, Maria V. Grabchenko, Valery A. Svetlichnyi, Giuseppe Pantaleo, Luca Consentino, Olga A. Stonkus, Olga V. Vodyankina, Leonarda Francesca Liotta
Summary: Novel yttrium-doped CeO2, MnOx, and CeMnOx composites are investigated as catalysts for low-temperature NH3-SCR. The study found that undoped CeMnOx mixed oxide exhibits significantly higher deNO(x) performance compared with undoped and Y-doped MnOx and CeO2 catalysts. The presence of yttrium in CeMnOx lowers the catalyst activity by promoting the competitive NH3-SCO reaction and reducing the amount of NH3 available for NO reduction. The study also analyzed the physical-chemical properties of the prepared catalysts using various techniques.
Article
Chemistry, Multidisciplinary
Eleonora La Greca, Tamara S. Kharlamova, Maria V. Grabchenko, Luca Consentino, Daria Yu Savenko, Giuseppe Pantaleo, Lidiya S. Kibis, Olga A. Stonkus, Olga V. Vodyankina, Leonarda Francesca Liotta
Summary: In this study, CeO2, MnO2, and CeMnOx mixed oxide were prepared using sol-gel method. The obtained supports were used to synthesize silver catalysts by the impregnation method. The selective catalytic reduction of NO by C3H6 was investigated, and the physical-chemical properties of the catalysts were characterized. The Ag/CeMnOx catalyst showed the highest activity due to its high dispersion and distortion of the fluorite-type phase and the presence of dispersed Ag+/Ag-n (delta+) species.
Article
Chemistry, Inorganic & Nuclear
Davide Palma, Francesca Deganello, Leonarda Francesca Liotta, Valeria La Parola, Alessandra Bianco Prevot, Mery Malandrino, Enzo Laurenti, Vittorio Boffa, Giuliana Magnacca
Summary: The influence of synthesis and processing parameters on the thermocatalytic performance of Ce-doped SrFeO3 inorganic perovskites was investigated to improve reproducibility and reliability. Analysis revealed that strict control of synthesis parameters is crucial for optimizing the thermocatalytic properties. The best synthesis conditions include full gelification of the sol, an overstoichiometric reducer-to-oxidizer ratio, a nominal cerium content of 15 mol%, pH 6, and thermal treatment at 800 °C/2 h.
Article
Chemistry, Physical
Michele Casiello, Stefano Savino, Marina Massaro, Leonarda Francesca Liotta, Giuseppe Nicotra, Carlo Pastore, Caterina Fusco, Antonio Monopoli, Lucia D'Accolti, Angelo Nacci, Serena Riela
Summary: In this study, Halloysite material was modified and used as a support for ZnO nanoparticles, which were then employed as a catalyst for FAMEs production. The recyclability of the nanomaterial was investigated and reaction conditions were optimized using experimental design approach. A screening of different clay minerals was also performed and Hectorite, chosen as a model 2:1 clay mineral, was covalently modified and tested as a catalyst in the esterification of FFAs.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Vincenzo Campisciano, Laura Valentino, Maria Laura Alfieri, Valeria La Parola, Alessandra Napolitano, Francesco Giacalone, Michelangelo Gruttadauria
Summary: This study successfully functionalized SWCNTs by reacting with dopamine azide at high temperature while maintaining the integrity of the pi-network. The properties and composition of the functionalized material were characterized using various techniques, and palladium species were immobilized for use as a catalyst in reduction and Heck reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Emanuela Calcio Gaudino, Maela Manzoli, Maria Luisa Testa, Valeria La Parola, Giorgio Grillo, Giancarlo Cravotto, Elisa Acciardo, Silvia Tabasso
Summary: This paper presents a sustainable and efficient protocol for the conversion of levulinic acid into N-substituted pyrrolidones using microwave-assisted catalytic reactions. The authors optimized the reaction conditions using tailor-made catalysts supported on highly mesoporous silica or titania-doped HMS, achieving good-to-excellent yields. Furthermore, they successfully scaled up the reaction using a microwave-assisted flow reactor and green solvents. This new method shows promise for industrial applications, while minimizing the use of toxic organic solvents.
Article
Environmental Sciences
B. Notarnicola, G. Tassielli, P. A. Renzulli, R. Di Capua, F. Astuto, S. Riela, A. Nacci, M. Casiello, M. L. Testa, L. F. Liotta, C. Pastore
Summary: In recent years, there has been a growing demand for biofuels, particularly biodiesel produced from sewage sludge. Different processes for biodiesel synthesis from lipid matter have been explored, including conventional processes with sulfuric acid and processes using solid catalysts. However, there is a lack of Life Cycle Assessment (LCA) studies on biodiesel production systems starting from sewage sludge and using solid catalysts. This research conducted a comparative LCA study on seven different scenarios of lipid extraction and transformation from sewage sludge, with the biodiesel synthesis using aluminium chloride hexahydrate as the catalyst showing the best environmental profile.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Maria V. Grabchenko, Natalia V. Dorofeeva, Valery A. Svetlichnyi, Yurii V. Larichev, Valeria La Parola, Leonarda Francesca Liotta, Sergei A. Kulinich, Olga V. Vodyankina
Summary: The dry reforming of methane using supported Ni catalysts on SBA-15 modified by CeMnOx mixed oxides with different Ce/Mn ratios has been studied. The modification enhances the catalytic performance and stability, with the catalyst at a Ce/Mn ratio of 9 achieving the best results.
Article
Chemistry, Multidisciplinary
Martin B. Ostergaard, Francesca Deganello, Valeria La Parola, Leonarda F. Liotta, Vittorio Boffa, Mads K. Jorgensen
Summary: Ce-doped SrFeO3 perovskite-type compounds are effective thermocatalysts for degrade wastewater contaminants. The effects of cerium excess on the properties and thermocatalytic activity of Sr0.86Ce0.14FeO3-CeO2 perovskite-oxide systems were investigated. The introduction of a larger cerium excess enhances the perovskite performance, and the oxygen mobility and reducibility contribute to the superior thermocatalytic properties of these perovskite oxide-based systems.
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)
