Article
Energy & Fuels
Hengyu Wan, Yan He, Qiaoqiao Su, Leping Liu, Xuemin Cui
Summary: Geopolymers as catalyst supports show promising catalytic performance for CO2 methanation. Catalysts prepared using KOH-activated chemically synthesized slag and ground granulated blast furnace slag demonstrate higher CO2 conversion and CH4 selectivity.
Article
Chemistry, Physical
Tiancheng Pu, Jiacheng Chen, Weifeng Tu, Jing Xu, Yi-Fan Han, Israel E. Wachs, Minghui Zhu
Summary: In this study, the strong metal-support interaction (SMSI) phenomenon for supported Ni/CeO2 catalysts with different CeO2 nanomorphologies was systematically explored. The degree of encapsulation of Ni particles originating from the SMSI effect was found to be positively correlated with the CO2 hydrogenation activity. Quasi in situ XPS and in situ DRIFTS techniques were used to reveal the relevant species and reaction pathways. These findings provide a fundamental strategy for tailoring catalytic performance by adjusting the support surface structure.
JOURNAL OF CATALYSIS
(2022)
Article
Engineering, Environmental
Yulin Wei, Jun Ji, Fuxin Liang, Deli Ma, Yuhang Du, Zhe Pang, Honglei Wang, Qinggang Li, Guopu Shi, Zhi Wang
Summary: Adjusting the active sites and metal-support interactions of catalytic coatings is a desirable strategy to improve CO2 methanation performance. A highly active Pd/P-CeO2-Al2O3 catalyst with uniform three-dimensional mesh-like pores and daisy-like clusters was created. By forming a strong metal-support interaction through electron transfer, the catalyst exhibited improved Pd dispersion, enhanced hydrogen activation, and shortened hydrogen spillover path.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Xiaohan Yuan, Tiancheng Pu, Mengwei Gu, Minghui Zhu, Jing Xu
Summary: This study systematically investigates a series of nickel-iron-based bimetallic catalysts to unveil the nature of active sites for the CO2 hydrogenation reaction, revealing an environmental-sensitive strong metal-support interaction between Ni nanoparticles and iron oxides. Iron oxides migrate and entirely cover the metallic Ni nanoparticles during the reaction, yielding a more active core-shell-type structure with much-improved reducibility, a process indirectly monitored in a time-resolved manner by in situ DRIFTS and confirmed to complete within 30 min of the reaction.
Article
Chemistry, Multidisciplinary
Zhenqiong Gou, Shuang Chen, Daohui Zheng, Xiaoping Wang, Hongmei Xie, Guilin Zhou
Summary: The large-scale use of fossil fuels has resulted in massive CO2 emissions and serious environmental problems, posing a direct threat to human survival and sustainable development. CO2 catalytic hydrogenation to CH4 is an efficient way to utilize CO2 with low energy consumption and high efficiency, and has been widely studied in recent years.
Article
Multidisciplinary Sciences
Waqar Ahmad, Paramita Koley, Swarit Dwivedi, Rajan Lakshman, Yun Kyung Shin, Adri C. T. van Duin, Abhijit Shrotri, Akshat Tanksale
Summary: A novel heterogeneous catalyst, thermally transformed MIL-88B with Fe-0 and Fe3O4 dual active sites, was reported for highly selective production of acetic acid via methanol hydrocarboxylation. The catalyst showed high yield (590.1 mmol/g(cat).L) and selectivity (81.7%) of acetic acid, and maintained stable performance during recycling. This work is of great significance for reducing carbon emissions by utilizing carbon dioxide.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Haipeng Chen, Pei Liu, Jinqiang Liu, Xun Feng, Shixue Zhou
Summary: The study presents a Ni-incorporated MgO/MgH2 material synthesized via a facile mechanochemical ball-milling method for thermo-catalytic CO2 methanation. The material achieves high catalytic performance in converting CO2 to CH4 with superior selectivity at low temperature. This selective hydrogenation process can potentially inspire the design of catalysts for the conversion of CO2 to value-added chemicals.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Jiadong Zhu, Diana Ciolca, Liang Liu, Alexander Parastaev, Nikolay Kosinov, Emiel J. M. Hensen
Summary: In this study, Cu-based catalysts were synthesized using different methods, with the addition of CeO2 found to enhance the CH3OH selectivity of Cu/ZnO-CeO2 catalysts. In situ IR spectroscopy revealed insights into the CO2 hydrogenation mechanism over Cu-Zn-Ce oxide catalysts.
Article
Chemistry, Multidisciplinary
Zhen-Hong He, Zhu-Hui Li, Zhong-Yu Wang, Kuan Wang, Yong-Chang Sun, Sen-Wang Wang, Wei-Tao Wang, Yang Yang, Zhao-Tie Liu
Summary: The study focuses on the preparation of Co-Cu-Mn trimetallic catalysts for catalyzing photothermal CO2 reduction, highlighting the significant influence of the metal composition and reduction temperature on the catalysts' performance. Among the tested catalysts, Co7Cu1Mn1Ox(200) showed high activity for producing methane under specific conditions.
Article
Environmental Studies
Radwa A. A. El-Salamony, Sara A. A. El-Sharaky, Seham A. A. Al-Temtamy, Ahmed M. M. Al-Sabagh, Hamada M. M. Killa, Said A. A. Said
Summary: CO2 methanation is an effective strategy for utilizing waste gases, and the design of efficient catalysts is crucial for enhancing low-temperature catalytic performance. This study explores the effect of metal type on the catalytic performance of yttrium oxide-supported catalysts. The catalytic tests show that with Ru/Y2O3, Ni/Y2O3, and Co/Y2O3 catalysts, the methane yield reached 64.67%, 60.03%, and 50.82%, respectively.
ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Applied
Bolang Li, Fei Wang, Kai Li, Ping Ning, Min Chen, Changbin Zhang
Summary: This study investigates the activity and selectivity of transition metals (Fe, Co, and Ni) supported on CeO2 catalyst for CO2 hydrogenation. The results show that Ni/CeO2 exhibits the highest CO2 conversion, while Fe/CeO2 tends to produce CO. In addition, Co/CeO2 and Ni/CeO2 show nearly 100% selectivity towards CH4. The characterization results reveal that the weak metal-support interaction over Ni/CeO2 benefits the activation of H2 and promotes CO2 hydrogenation activity. The in situ DRIFTS results demonstrate that monodentate formate species are the active intermediates in CH4 production from CO2 hydrogenation.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Applied
Shuangxi Lin, Ziwen Hao, Jindong Shen, Xiao Chang, Shouying Huang, Maoshuai Li, Xinbin Ma
Summary: The metal-support interaction was effectively regulated by low-temperature treatment of Ni2+ ions impregnated on ceria in reductive atmosphere and reduction-oxidation cycles, leading to enhanced catalytic performance in CO2 methanation. The Ni/CeO2 catalyst showed highly dispersed Ni nanoparticles, more surface oxygen vacancies, and weak basic sites, resulting in increased H2 and CO2 adsorption/activation capacity. The established interaction significantly improved the activity in CO2 methanation with high selectivity to CH4 and stability.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Shiqiang Wang, Jinhai Yang, Shiwei Wang, Fukui Xiao, Ning Zhao
Summary: A series of Cu-Mn-(La)-Zr catalysts were synthesized using sol-gel, co-precipitation, and hydrothermal methods, and the effects of Mn and La on their activity were investigated. It was found that the addition of La promoted the formation of medium basic sites, while Mn acted as an electronic promotor that enhanced the adsorption and activation of H-2 and CO2.
Article
Chemistry, Physical
Kevin Schlenker, Elizabeth G. Christensen, Asylbek A. Zhanserkeev, Gabriel R. McDonald, Emily L. Yang, Kevin T. Lutz, Ryan P. Steele, Ryan T. VanderLinden, Caroline T. Saouma
Summary: The study reveals that substrate binding to the backbone of the catalyst is advantageous for the hydrogenation of CO2, contrary to previous assumptions. The enhanced hydricity observed upon deprotonation may have broad applicability to systems capable of undergoing metal-ligand cooperativity. This work demonstrates the use of thermochemical analysis to advance mechanistic understanding in (de)hydrogenation catalysis.
Article
Chemistry, Inorganic & Nuclear
Zixing Jia, Longfei Li, Xuewen Zhang, Kan Yang, Huidong Li, Yaoming Xie, Henry F. Schaefer
Summary: In this study, a comprehensive investigation on CO2 hydroboration catalyzed by Mn pincer complexes is reported. The traditional metal-ligand cooperation mechanism is found to be inviable, and an ionic mechanism is proposed instead. The acceleration effect of bases is also unveiled. Modulating the X groups in the catalyst models can change the energy barrier of hydride transfer, and a pyridine-based Mn pincer catalyst system is designed for CO2 hydroboration in low-temperature and base-free conditions through metal-ligand cooperation.
INORGANIC CHEMISTRY
(2022)
Article
Engineering, Chemical
Chenxi Zhang, Weizhong Qian, Yao Wang, Guohua Luo, Fei Wei
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2019)
Review
Chemistry, Physical
Zhoufei Yang, Jiarui Tian, Zefang Yin, Chaojie Cui, Weizhong Qian, Fei Wei
Article
Energy & Fuels
Xiaoye Dai, Lin Shi, Weizhong Qian
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2019)
Article
Chemistry, Physical
Ning Wang, Yilin Hou, Wenjing Sun, Dali Cai, Zhaohui Chen, Lingmei Liu, Binghui Ge, Ling Hu, Weizhong Qian, Fei Wei
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Review
Thermodynamics
Xiaoye Dai, Lin Shi, Weizhong Qian
JOURNAL OF THERMAL SCIENCE
(2019)
Article
Thermodynamics
Xiaoye Dai, Lin Shi, Weizhong Qian
JOURNAL OF THERMAL SCIENCE
(2020)
Article
Engineering, Chemical
Wenlong Song, Yilin Hou, Zhaohui Chen, Dali Cai, Weizhong Qian
CHEMICAL ENGINEERING SCIENCE
(2020)
Review
Chemistry, Multidisciplinary
Zefang Yin, Chaojie Cui, Hang Chen, Duoni, Xiang Yu, Weizhong Qian
Article
Energy & Fuels
Zhaohui Chen, Wenlong Song, Yilin Hou, Huiqiu Wang, Chenxi Zhang, Jian Wang, Yifeng Yang, Weizhong Qian
Article
Chemistry, Physical
Huiqiu Wang, Yilin Hou, Wenjing Sun, Qikun Hu, Hao Xiong, Tiefeng Wang, Binhang Yan, Weizhong Qian
Review
Chemistry, Multidisciplinary
Zhenxing Zhu, Chaojie Cui, Yunxiang Bai, Jun Gao, Yaxin Jiang, Bofan Li, Yao Wang, Qiang Zhang, Weizhong Qian, Fei Wei
Summary: Carbon nanotubes have a unique tubular structure composed of highly graphitized atoms, with remarkable physics and performances. Despite challenges in synthesis and production, significant advances have been made in ton-scale production, 3D microprocessors, ultrastrong fibers, pushing the renaissance of CNTs towards a new peak.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Huiqiu Wang, Boyuan Shen, Xiao Chen, Hao Xiong, Hongmei Wang, Wenlong Song, Chaojie Cui, Fei Wei, Weizhong Qian
Summary: By enriching the inherent Lewis acid sites at the interface of a mortise-tenon ZSM-5 catalyst, the lattice mismatch of the intergrown zeolite offers an efficient strategy to design the Lewis acidity in zeolite catalysts, resulting in improved selectivity.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiaoliang Yan, Min Cao, Sha Li, Paul N. Duchesne, Wei Sun, Chenliang Mao, Rui Song, Zhe Lu, Xiao Chen, Weizhong Qian, Ruifeng Li, Lu Wang, Geoffrey A. Ozin
Summary: Researchers have synthesized a novel bimetallic heterogeneous catalyst and discovered its excellent catalytic performance and selectivity for carbon dioxide methanation through in situ analysis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yunxiang Bai, Hongjie Yue, Rufan Zhang, Weizhong Qian, Zhong Zhang, Fei Wei
Summary: In this article, the mechanical behavior of defect-free single CNTs and CNT bundles is discussed in order to explore how to avoid the size effect of nanomaterials and produce superstrong CNT fibers, as well as the potential for using CNTs in flywheel energy storage.
ACCOUNTS OF MATERIALS RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Zhuoya Dong, Bofan Li, Chaojie Cui, Weizhong Qian, Yong Jin, Fei Wei
REACTION CHEMISTRY & ENGINEERING
(2020)