Article
Energy & Fuels
Dara Khairunnisa Binte Mohamed, Andrei Veksha, Quan Luu Manh Ha, Wei Ping Chan, Teik-Thye Lim, Grzegorz Lisak
Summary: This review examines the recent findings on the poisoning effects of syngas impurities on nickel catalysts and the development of poison tolerant catalysts. It discusses the source and content of impurities from different feedstock gasification. The limitations of current catalytic tar reforming processes and promising approaches for future works are also discussed.
Article
Chemistry, Applied
Jinchang Liu, Tao Zhang, Jin Den, Qiuxiang Lu, Yanwei Zhao, Shenfu Yuan
Summary: The catalytic reformation of anise pyrolysis volatiles using Fe/biochar, Ni/biochar, and Fe-Ni/biochar bimetallic catalysts in a fixed-bed reactor was investigated. Fe/biochar catalyst showed high catalytic activity, while Ni/biochar and Fe-Ni/biochar bimetallic catalysts demonstrated no activity. The poisoning and carbon accumulation resulted in severe deactivation of Fe-Ni bimetallic catalysts.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kanju Mitamura, Takafumi Yatabe, Kidai Yamamoto, Tomohiro Yabe, Kosuke Suzuki, Kazuya Yamaguchi
Summary: This study successfully achieved an efficient base-free formal C-S bond metathesis of various thiols using a rationally designed heterogeneously catalyzed system with Ni-Pd alloy nanoparticles supported on hydroxyapatite (Ni-Pd/HAP) under an H-2 atmosphere, by suppressing the deactivation of the Ni catalyst.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Tong Li, Hao Li, Guoming Huang, Xinhui Shen, Siqi Wang, Chunli Li
Summary: This study successfully developed an efficient Ni/C catalyst derived from waste biomass tar for selective hydrogenation-transalkylation of guaiacol, achieving excellent catalytic performance and providing a basis for designing green and efficient catalysts derived from tar for biomass upgrading.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Multidisciplinary Sciences
Bin Shao, Zhi-Qiang Wang, Xue-Qing Gong, Honglai Liu, Feng Qian, P. Hu, Jun Hu
Summary: The integrated CO2 capture and conversion (iCCC) technology is a promising cost-effective approach for Carbon Neutrality. The lack of molecular consensus about the synergistic effect between adsorption and in-situ catalytic reaction hampers its development. In this study, the synergies between CO2 capture and in-situ conversion are illustrated through high-temperature Calcium-looping and dry reforming of methane processes.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Kuen-Song Lin, Cheng-Yan Tang, Ndumiso Vukile Mdlovu, Chi-Jung Chang, Chao-Lung Chiang, Zhi-Min Cai
Summary: Ni/Al2O3 prepared by impregnation can be used for CO2 hydrogenation into carbon nano fibers with high catalytic performance. The unique microstructure and high specific surface area of the prepared Ni/Al2O3 contribute to its enhanced catalytic activity. The configuration of CNFs was characterized by its unique ID/IG ratio in the Raman spectrum and observed morphologically by FE-SEM and HR-TEM.
Article
Materials Science, Multidisciplinary
Takafumi Ishii, Yuki Kitamura, Seiya Hasegawa, Chiaki Sasaki, Jun-ichi Ozaki
Summary: The study demonstrates that the catalytic activity of metal particles on doped carbon support material can be improved, indicating that introducing heteroatoms can alter the catalytic activity of the catalyst.
DIAMOND AND RELATED MATERIALS
(2021)
Review
Chemistry, Physical
Nur Diyan Mohd Ridzuan, Maizatul Shima Shaharun, Mohd Azrizan Anawar, Israf Ud-Din
Summary: This review critically discusses recent developments in the application of nickel-based catalysts for CO2 methanation, focusing on the effects of supporting material, promoters, and catalyst composition. Additionally, the thermodynamics, kinetics, and mechanism of CO2 methanation are briefly addressed.
Article
Chemistry, Physical
Natalia Diaz Montenegro, William S. Epling
Summary: The methane oxidation and oxygen storage capacity of a bilayer Pt/Pd/Al2O3 over a Mn0.5Fe2.5O4 spinel catalyst under periodic conditions were studied before and after SO2 exposure. Improvement in CH4 oxidation conversion was observed under periodic conditions compared to steady-state conditions before sulfur exposure. After sulfur exposure, a loss in CH4 oxidation performance and oxygen storage capacity of the spinel material was observed, but regeneration methods under periodic conditions led to improved CH4 conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Xinru Yang, Min Huang, Hongyang Huang, Dalin Li, Yingying Zhan, Lilong Jiang
Summary: A series of supported Ni catalysts were prepared and investigated for CO2 methanation. The catalysts exhibited different structural properties and catalytic activities depending on the Ni:Mg molar ratio. Among the catalysts, Ni2Mg1Al-HT showed the highest activity and stability, with well-dispersed Ni particles and a large amount of surface Ni-0 species. The reaction was found to proceed via the formate formation route.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Aleksei A. Turkin, Fatima Rammal, Samuel Eyley, Wim Thielemans, Ekaterina V. Makshina, Bert F. Sels
Summary: This study reveals the mechanism of catalyst poisoning by organic sulfur species in commercial 5-HMF feedstock during its hydroconversion. Various sulfur species were found to have a significant catalyst poisoning effect on HMF hydroconversion. The degree of poisoning is correlated with the thermodynamic favorability of metal sulfide formation. The presence of reduced sulfur species was identified as the ultimate metal poisoning agent, and their formation from more oxidized sulfur compounds explains the observed poisoning effect.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Zhang Ruijie, Jin Haibo, Ma Lei, Yang Suohe
Summary: In this paper, the effects of preparation conditions on the reaction activity of Ru-Sn and Pd-based bimetallic composite catalysts were studied. It was found that the Ru-Sn bimetallic active center was predominantly located in the Ru-based catalysts. Furthermore, the influence of reaction parameters on hydrogenation reactions was examined.
Article
Biochemistry & Molecular Biology
Yongwang Ren, Huizhong Xu, Beibei Han, Jing Xu
Summary: In this study, a Ni/SiO2@NxC catalyst was prepared for the selective hydrogenation of cinnamaldehyde, achieving high selectivity. By constructing the Mott-Schottky effect, electron transfer from Ni to N-doped carbon was promoted, enhancing the hydrogenation of C=C bonds and increasing the selectivity for 3-phenylpropionaldehyde. This work provides an effective way to design electronically adjustable catalysts for selective hydrogenation reactions.
Article
Chemistry, Physical
Shaoming Dong, Yinghui Pu, Yiming Niu, Lei Zhang, Yongzhao Wang, Bingsen Zhang
Summary: Selective hydrogenation is a crucial catalytic reaction in modern industrial chemistry. This study developed a novel nickel-based catalyst that showed enhanced catalytic performance, improved butene selectivity, and addressed the issue of carbon accumulation leading to catalyst deactivation.
ACTA PHYSICO-CHIMICA SINICA
(2023)
Article
Chemistry, Physical
Xuejie Zhang, Yebin Zhou, Guowei Li, Lei Zhang, Chunyu Yin, Yuanyuan Yang, Hongzheng Wang, Feng Feng, Linwei Wei, Qunfeng Zhang, Feng Yang, Lili Lin, Chunshan Lu, Xiaonian Li
Summary: Developing sulfur resistant and stable hydrogenation catalysts with high activity is important for the production of value-added chemicals, as it allows for the use of crude raw materials, reduces environmental impact, and saves energy.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
