Article
Energy & Fuels
Hui Liu, Jie Yu
Summary: In this study, LSCM powders and Cu-Ni/LSCM catalysts were prepared using the GNP method, and the structures and properties of the samples were investigated. The results showed that the Ni/Cu mass ratio had an impact on the methane conversion rate, with the sample Cu:Ni = 1:5 exhibiting the best catalytic performance due to its larger surface area and highest nickel content.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Victor Stivenson Sandoval-Bohorquez, Edgar M. Morales-Valencia, Carlos O. Castillo-Araiza, Luz M. Ballesteros-Rueda, Victor G. Baldovino-Medrano
Summary: The study investigates the kinetics of dry reforming using Ni-La2O3 catalyst and suggests that a single active site model is more suitable. Additionally, it is found that CO2 dissociation can have an impact on methane activation.
Article
Chemistry, Physical
Tingting Zhao, Haoran Yu, Xuyingnan Tao, Feiyang Yu, Ming Li, Haiqian Wang
Summary: This study investigated the catalytic properties of perovskite oxides themselves for dry reforming of methane (DRM). The results showed that reducing the Ni content helps to reduce carbon deposition caused by metal Ni nanoparticles, and LaNixCr1-xO3 perovskites exhibit intrinsic catalytic activity for DRM reactions.
Article
Chemistry, Physical
Jinqiang Zhang, Kun Xie, Yichen Jiang, Meng Li, Xiaojie Tan, Ye Yang, Xiaoli Zhao, Liang Wang, Yinfeng Wang, Xiaoyuan Wang, Yuezhao Zhu, Haijun Chen, Mingbo Wu, Hongqi Sun, Shaobin Wang
Summary: A comprehensive mechanistic investigation of bimetal NiCo/SiO2 in photothermo- and thermocatalytic DRM reveals that Co substitution inhibits thermocatalysis but promotes the reaction under light irradiation. Energetic hot carriers in the NiCo alloy under light irradiation directly activate reactant molecules and overcome thermodynamic barriers, selectively promoting the generation of CO. Thus, NiCo/SiO2 achieves higher photo-to-thermal efficiency and prominent performance in photothermal catalytic DRM.
Article
Engineering, Environmental
Tao Xie, Zhen-Yu Zhang, Hao-Ye Zheng, Kai-Di Xu, Zhun Hu, Yu Lei
Summary: Developing new highly efficient catalytic techniques for solar photo-thermal-chemical conversion is crucial. In this paper, a Ni/mesoporous TiO2 photothermal catalyst was prepared and applied to methane dry reforming. Results showed that the prepared catalyst exhibited superior catalytic performance compared to reported catalysts. The synergistic effect of photothermal catalysis significantly improved product formation rates and reactant conversions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Lola Azancot, Vincent Blay, Ruben Blay-Roger, Luis F. Bobadilla, Anna Penkova, Miguel A. Centeno, Jose A. Odriozola
Summary: This study investigates the role of potassium as a promoter in Ni-based catalysts for reducing coke deposition during catalytic dry reforming. By identifying new Ni-O-K chemical states and studying their effect on the catalyst's properties, the study provides new insights into the relationship between catalytic performance and physicochemical properties. The formation of Ni-O-K is found to significantly enhance the catalyst's long-term stability in dry reforming, suggesting new directions for designing more efficient catalysts for sustainable gas-to-liquids processes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Heesu Kim, Rasika Mane, Kyeongwon Han, Hyungjin Kim, Chanmin Lee, Yukwon Jeon
Summary: A study reports the in situ control of exsolved Ni nanoparticles from perovskite as a catalyst for dry reforming of methane, demonstrating the importance of exsolution mechanism control for catalytic applications.
Article
Chemistry, Physical
Zahra Taherian, Vahid Shahed Gharahshiran, Fatemeh Fazlikhani, Mardali Yousefpour
Summary: In this study, the addition of samarium to Ni catalyst through impregnation method successfully decreased the average Ni crystallite size and specific surface area, resulting in improved catalytic activity, enhancing the methane dry reforming process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Soham Shah, Mingjie Xu, Xiaoqing Pan, Kandis Leslie Gilliard-AbdulAziz
Summary: Researchers have developed a method for combining Ni, Fe, Co, Cu, and Pd into nanoparticles using the exsolution mechanism, which shows promising catalytic properties for dry methane reforming. The study also found that smaller concentrated alloy nanoparticles are more effective for methane activation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Xueli Yao, Qingpeng Cheng, Yerrayya Attada, Samy Ould-Chikh, Adrian Ramirez, Xueqin Bai, Hend Omar Mohamed, Guanxing Li, Genrikh Shterk, Lirong Zheng, Jorge Gascon, Yu Han, Osman M. Bakr, Pedro Castano
Summary: The dry reforming of methane achieves sustainability goals by activating carbon dioxide and producing syngas. The catalyst plays a crucial role in controlling the process's activity, selectivity, and stability. A one-step reduction strategy is used to assemble a catalyst with uniform-sized Ni-Fe alloy nanoparticles. The catalyst shows exceptional stability and inhibits coke formation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Sonali Das, Ashok Jangam, Shanmukapriya Jayaprakash, Shibo Xi, Kus Hidajat, Keiichi Tomishige, Sibudjing Kawi
Summary: Sandwich structured core-shell Ni-Phyllosilicate@Ce1-xZrxO2 catalysts with optimal Zr loading in the Ce1-xZrxO2 shell are found to greatly enhance the intrinsic activity for DRM due to increased lattice oxygen mobility of the ceria-zirconia shell and stronger metal-support interaction with Ni. Involvement of lattice oxygen in methane activation and dissociation contributes to the higher DRM activity of the Zr-doped catalyst with maximum oxygen storage capacity, as inferred from rigorous kinetic and mechanism studies.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
S. Baraka, K. Bouearan, L. Caner, C. Fontaine, F. Epron, R. Brahmi, N. Bion
Summary: The catalytic activity of Ni-bearing clay minerals obtained from natural nickel lateritic ores from Niquelandia, Brazil in methane dry reforming reaction was evaluated. The ni content in the structure layers and interlayer space plays a significant role in catalysis. Saturation with Ni enhances the activity compared to saturation with Mg.
JOURNAL OF CO2 UTILIZATION
(2021)
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
Peng Qiu, Jiazheng Yuan, Kun Cheng, Chunyan Xiong, Shaowen Wu
Summary: Dry reforming of methane (DRM) has significant economic value and environmental protection significance. In this study, Ce doping was investigated to enhance the catalytic activity and durability of an in-situ reduced Ni-doped BaZrO3-8-based DRM reforming catalyst. The Ce-doped perovskite catalyst exhibited the highest catalytic activity and excellent durability, attributed to increased concentration of oxygen vacancies, improved hydration capacity, and enhanced CO2 adsorption capacity.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Amirhossein Shahnazi, Sadegh Firoozi
Summary: The study shows that Mn substitution improves the catalytic activity and stability of LaNiO3, with higher oxygen mobility and capacity to remove carbon through a cyclic redox mechanism, reducing carbon deposition. Additionally, Mn-substituted catalysts exhibit lower sintering tendency and improved structural stability.
JOURNAL OF CO2 UTILIZATION
(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)