Article
Chemistry, Multidisciplinary
A. Hernandez Martinez, E. Lopez, S. Larregola, O. Furlong, M. S. Nazzarro, L. E. Cadus, F. N. Aguero
Summary: Ni-Rh bimetallic catalysts were prepared by the citrate method and characterized. The addition of Rh modified the reducibility and oxygen mobility of the catalysts. The catalyst Rh0.02Ni0.2 showed the highest activity and stability in the ethanol steam reforming reaction.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yvan J. O. Asencios, Cristiane B. Rodella, Elisabete M. Assaf
Summary: Catalysts based on Ni/PrO2-ZrO2 mixtures show excellent catalytic performance in various reactions. The PrO2-ZrO2 solid solution as a catalytic support can enhance the production of syngas and reduce carbon deposition. In situ characterization of the catalysts reveals that higher PrO2 content helps optimize the catalyst structure and improve activity and stability.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Inorganic & Nuclear
Cong Suo, Yang Liu, Xiao Zhang, Haiyan Wang, Bingbing Chen, Jiancong Fang, Zhenguo Zhang, Ruoyu Chen, Rui Chen, Chuan Shi
Summary: This study presents a method of preparing embedded Ni@PSi catalysts by adjusting the reduction temperature, which effectively prevents the sintering of Ni nanoparticles and maintains stability. The optimized reduction temperature of 600 degrees C results in a catalyst with high reaction rate and stability.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
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, Multidisciplinary
Theodora Ramantani, Georgios Bampos, Andreas Vavatsikos, Georgios Vatskalis, Dimitris I. Kondarides
Summary: The study investigated propane steam reforming over perovskite catalysts derived from LaNiO3, La0.8Sr0.2NiO3, and noble metal-substituted perovskites. The incorporation of foreign cations in the structure led to an increase in specific surface area and improved catalytic performance, with the in situ development of new phases actively participating in the reaction. Among the catalysts tested, LSNRh0.1 exhibited the best performance with high stability, propane conversion, and hydrogen selectivity.
Article
Energy & Fuels
Junjie Wen, Yu Xie, Yanping Ma, Haiyang Sun, Huimin Wang, Mo Liu, Qiulin Zhang, Jianjun Chen
Summary: Ni-CeZrAl catalyst prepared by co-precipitation method demonstrated high performance in dry reforming of methane, with the highest methane conversion reaching 38.1%. The superior catalytic behavior was attributed to the high dispersion of surface Ni-0 active phase, abundant oxygen vacancies, and basic sites. In contrast, Ni-CeAl and Ni-CeZr showed inferior catalytic performance due to weak interaction and fewer active sites.
Article
Materials Science, Ceramics
Kazem Bakhtiari, Amirhossein Shahbazi Kootenaei, Sarah Maghsoodi, Shima Azizi, Seyed Mostafa Tabatabaei Ghomsheh
Summary: This study demonstrates that surface modification and reconstruction of halloysite nanotubes through alkaline molten method can serve as an excellent support for different catalysts. The physicochemical properties of halloysite-supported Ni catalysts were significantly influenced by Ce, La, and Co in the dry reforming of methane. The halloysite-supported Ni catalyst containing Co exhibited the best activity and stability.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Andrey Zadesenets, Ilia A. Garkul, Evgeny Yu. Filatov, Aleksandr S. Sukhikh, Pavel E. Plusnin, Artem S. Urlukov, Sergey I. Uskov, Dmitriy I. Potemkin, Sergey Korenev
Summary: Double oxalates of Rh with Ni and Co were synthesized and decomposed to form nanoalloys with excellent catalytic activity in low temperature steam reforming. Ni-Rh catalyst showed higher activity compared to monometallic catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Pradeep Kumar Yadav, Preeti Dahiya, Tapas Kumar Mandal, Taraknath Das
Summary: In this study, a series of ceria-doped perovskite catalysts and magnesia-modified alumina-supported perovskite catalysts were prepared via the sol-gel method and thoroughly characterized. The results showed that the ceria doping enhanced the dispersion of active sites, increased the stability of the catalyst, and inhibited coke deposition. The addition of magnesia and substitution of La-ion with ceria further improved the catalytic activity. The magnesia-modified alumina-supported perovskite catalyst exhibited higher activity and lower coke deposition.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Lifita N. Tande, Erik Resendiz-Mora, Valerie Dupont, Martyn V. Twigg
Summary: The study compared the performance of different catalysts and reaction conditions in the autothermal reforming process of acetic acid to produce hydrogen and syngas, finding that the Ni-CaAl catalyst with added CaO showed superior resistance to coke formation compared to Ni-Al. Both honeycomb and particulate packed bed catalyst structures offer different advantages, and future sustainable use of biomass and bio-oils for green hydrogen production could benefit from combining these advantages.
Article
Chemistry, Physical
Gagandeep Singh Dhillon, Guoqiang Cao, Nan Yi
Summary: In this study, nickel- and iron-modified titanium dioxide (Ni-Fe/TiO2) catalysts were investigated for the dry reforming of methane (DRM) at 550 degrees C. The addition of Fe was found to decrease the conversion of both CO2 and CH4, and XPS results showed changes in the surface nickel and iron species. Characterization techniques, including TGA and Raman spectroscopy, indicated that Fe addition greatly inhibited coke formation and in situ DRIFTS confirmed the formation of carbonate species, which aided in the removal of deposited coke.
Article
Chemistry, Physical
Robert Franz, Frans D. Tichelaar, Evgeny A. Uslamin, Evgeny A. Pidko
Summary: The study investigated the impact of passivation on the catalytic performance of Ni/Al2O3 catalysts in dry reforming of methane, showing that changes in conversion and coke content can track sintering of Ni particles. The study also revealed adverse effects of catalyst passivation in excess O2, leading to rapid local overheating and Ni sintering, even at small catalyst scales.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Adrian Mizera, Andrzej Kowalczyk, Lucjan Chmielarz, Ewa Drozdz
Summary: Two series of strontium titanates doped with Ni, Co, or Cu were prepared using the wet chemical method, with different stoichiometries. These materials were characterized for their structural properties, possibility of reduction and oxidation reactions, and catalytic properties. Ni-doped samples showed the highest catalytic activity in dry reforming of methane reaction, while Co and Cu-doped samples had minimal catalytic effects. Additionally, a decrease in methane conversion with increasing calcination temperature was observed for Ni-doped strontium titanates.
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
Engineering, Environmental
Rita Mahfouz, Jane Estephane, Cedric Gennequin, Lucette Tidahy, Samer Aouad, Edmond Abi-Aad
Summary: In this study, CO2 reforming of methane was investigated over Ni and/or Ru supported on KIT-6 and Ce-promoted catalysts. It was found that Ce promotion led to destruction of porous structure and impaired interactions between active phase and support, but increased the basicity of the catalysts. Among the non-promoted catalysts, Ni-Ru/KIT-6 showed better catalytic performance, while the Ce-promoted Ni-Ru/Ce-KIT-6 catalyst exhibited higher activity and stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Cristian H. Campos, Paula Osorio-Vargas, Nicolas Flores-Gonzalez, Jose L. G. Fierro, Patricio Reyes
Article
Chemistry, Applied
J. A. Tavizon-Pozos, V. A. Suarez-Toriello, J. A. de los Reyes, A. Guevara-Lara, B. Pawelec, J. L. G. Fierro, M. Vrinat, C. Geantet
TOPICS IN CATALYSIS
(2016)
Article
Chemistry, Applied
Angelica Forgionny, J. L. G. Fierro, Fanor Mondragon, Andres Moreno
TOPICS IN CATALYSIS
(2016)
Article
Chemistry, Physical
A. H. Pizarro, C. B. Molina, J. L. G. Fierro, J. J. Rodriguez
APPLIED CATALYSIS B-ENVIRONMENTAL
(2016)
Article
Chemistry, Physical
A. B. Dongil, L. Pastor-Perez, J. L. G. Fierro, N. Escalona, A. Sepulveda-Escribano
CATALYSIS COMMUNICATIONS
(2016)
Article
Chemistry, Applied
Dalia Liuzzi, Francisco Jose Perez-Alonso, Jose Luis G. Fierro, Sergio Rojas, Frank L. van Wijk, Ivo Roghair, Martin van Sint Annaland, Ekain Fernandez, Jose Luis Viviente, D. A. Pacheco Tanaka
Article
Chemistry, Applied
V. del Villar, L. Barrio, Arash Helmi, M. Van Sint Annaland, F. Gallucci, J. L. G. Fierro, R. M. Navarro
Article
Chemistry, Applied
Paula Osorio-Vargas, Nicolas A. Flores-Gonzalez, Rufino M. Navarro, Jose L. G. Fierro, Cristian H. Campos, Patricio Reyes
Article
Chemistry, Applied
D. K. Cromwell, P. T. Vasudevan, B. Pawelec, J. L. G. Fierro
Article
Chemistry, Inorganic & Nuclear
Horacio Falcon, Pedro Tartaj, Fernando Vaquero, Rufino M. Navarro, Jose Luis G. Fierro, Juan P. Bolletta, Juan M. de Paoli, Raul E. Carbonio, Maria Teresa Fernandez-Diaz, Jose Antonio Alonso
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2016)
Article
Chemistry, Physical
F. Vaquero, R. M. Navarro, J. L. G. Fierro
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
Robinson Dinamarca, Catherine Sepulveda, Eduardo J. Delgado, Octavio Pena, J. L. G. Fierro, Gina Pecchi
JOURNAL OF CATALYSIS
(2016)
Article
Chemistry, Physical
Panagiotis Platanitis, George D. Panagiotou, Kyriakos Bourikas, Christos Kordulis, Jose L. G. Fierro, Alexis Lycourghiotis
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
(2016)
Article
Chemistry, Physical
Maria Vizuete, Maria J. Gomez-Escalonilla, Myriam Barrejon, Jose Luis G. Fierro, Minfang Zhang, Masako Yudasaka, Sumio Iijima, Pedro Atienzar, Hermenegildo Garcia, Fernando Langa
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Chemistry, Multidisciplinary
Cathy Brabant, Andrei Khodakov, Anne Griboval-Constant
COMPTES RENDUS CHIMIE
(2017)
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)