Article
Chemistry, Physical
Zikai Xu, Chen Peng, Gan Luo, Songtao Yang, Pinger Yu, Shuai Yan, Mohsen Shakouri, Zhiqiang Wang, Tsun-Kong Sham, Gengfeng Zheng
Summary: In this work, a Ca2CuO3 perovskite oxide catalyst with alkaline-earth A-sites and undercoordinated Cu sites was developed, exhibiting strong basicity, outstanding CO2 adsorption, and high CH4 activity. The undercoordinated Cu sites promote the hydrogenation of *CO and subsequent *CHO intermediates, leading to high CH4 production at low overpotentials.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yongchun Xiao, Kui Xie
Summary: This study presents a novel approach to efficiently convert CH4/CO2 through dry reforming using active and durable metal-oxide interfaces in PSC CeO2 monoliths, addressing the challenges of catalyst sintering and coking at high temperatures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Physical
Meijia Li, Zhuxing Sun, Yun Hang Hu
Summary: This article presents the current development of CO2 or dry reforming of methane (CRM/DRM) technology, focusing on the progress in the development of efficient and robust catalysts, as well as future research directions and challenges.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Ceramics
Toshihiko Osaki
Summary: Nickel-alumina cryogel and xerogel catalysts showed similar catalytic activity in CO2 reforming of CH4, but carbon formation was more effectively suppressed on the cryogel. Freeze drying improved the structural and textural properties of alumina gel, resulting in finer nickel particles dispersed throughout the gel.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Dong Zhang, Hongmei Xie, Shuang Chen, Guilin Zhou
Summary: CoCex composite catalysts prepared by hydrothermal assisted template agent CTAB show superior catalytic performance in CH4/CO2 dry reforming. Transition metal Co is the main active center in the DRM reaction, and the introduction of Ce species can promote the formation of highly dispersed metal Co species and catalytic active centers. The CoCe2 catalyst prepared at a 2.0 Co/Ce molar ratio exhibits excellent catalytic performance and stability for DRM reaction.
Article
Energy & Fuels
Dong Zhang, Hongmei Xie, Shuang Chen, Guilin Zhou
Summary: The CoCex composite catalysts prepared with hydrothermal assisted template agent CTAB show superior catalytic performances for CH4/CO2 dry reforming. The introduction of Ce species promotes the formation of highly dispersed metal Co species and catalytic active centers, as well as the adsorption and activation of CO2 molecules. The Co/Ce molar ratio has an important influence on the physicochemical properties and CO2 adsorption performance of the catalysts. The CoCe2 catalyst prepared at a 2.0 Co/Ce molar ratio exhibits superior catalytic performance and high stability for the DRM reaction.
Article
Chemistry, Multidisciplinary
Fangyuan Cheng, Xiuyun Duan, Kui Xie
Summary: This study successfully stabilized Ni nanoparticles on a unique catalyst structure, achieving efficient conversion of dry reforming of CH4/CO2 to syngas and demonstrating good durability. The design of Ni-MgO interfaces facilitated the reaction process and enhanced coking resistance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Energy & Fuels
Phakamile Ndlovu, Saeideh Babaee, Paramespri Naidoo
Summary: This article reviews the encapsulation process of carbon dioxide by replacing methane from natural gas hydrates, presenting and discussing methane-carbon dioxide replacement models. The variables affecting the replacement process and reported theoretical findings are reviewed, along with the challenges and limitations. The fundamentals of hydrate formation mechanisms on porous media are also detailed, and a comprehensive discussion and comparison of experimental studies involving different porous media materials and various additives are presented.
Article
Mechanics
Jia Deng, Jiujiang Li, Lan Zhang, Fuquan Song, Dong Wang, Hongjian Wang
Summary: Injecting supercritical CO2 into tight gas reservoirs to displace CH4 is a promising technology for unconventional gas exploitation. This study investigates the non-linear seepage characteristics of CH4 displacement by supercritical CO2 and presents mathematical models for different flooding types. By analyzing various variables, the contributions to gas production rate are determined, and an approach for improving gas recovery efficiency is obtained.
Article
Chemistry, Multidisciplinary
Peter M. Chapple, Julien Cartron, Ghanem Hamdoun, Samia Kahlal, Marie Cordier, Hassan Oulyadi, Jean-Francois Carpentier, Jean-Yves Saillard, Yann Sarazin
Summary: This study presents the first families of alkaline-earth stannylides and analyzes their properties through a combination of experimental and computational methods, revealing primarily ionic Ae-Sn bonding in these complexes. The research provides insight into the main features of these unique families of homoleptic complexes.
Article
Energy & Fuels
Jyoti Shanker Pandey, Orjan Strand, Nicolas von Solms, Stian Almenningen, Geir Ersland
Summary: Currently, there is a lack of visualization studies on fluid migration and hydrate rearrangement during CO2 injection into CH4 hydrates. This experimental study provides the first pore-level visualization of gas-saturated CH4 hydrates when liquid CO2 is injected, revealing the impacts of CO2 injection on the morphology evolution of CH4 hydrates and its importance for improving CH4 gas recovery without losing hydrate mass.
Article
Chemistry, Physical
Jingjing Dai, Hongbo Zhang
Summary: This study systematically investigates the C-H bond activation mechanism on Pt/MgO catalyst with O-2, O-H2O, and CO2. It is found that dry reforming of CH4 (DRM) exhibits weaker activity compared to reforming or partial oxidation of CH4. Pressure dependence shows that CO has negligible effect, suggesting the involvement of CO2 in CH4 activation as a whole molecule. The reaction between adsorbed CH4 and CO2 to form formate and methyl species is kinetically relevant. Experimental results confirm that both CO2 and CH4 derivatives are the most abundant surface intermediates.
JOURNAL OF CATALYSIS
(2022)
Article
Engineering, Environmental
Yu Fu, Wenbo Kong, Bingrong Pan, Changkun Yuan, Shuqing Li, He Zhu, Jun Zhang
Summary: The study demonstrates that thermal oxidative aging and reduction strategy can reverse the sintering of Rh/TiO2 catalyst and significantly affect the catalytic performance towards methane dry reforming. The oxidative aging process impacts the mobilization of Rh species across TiO2, while reduction temperature influences oxymetal activation and electronic structure of Rh NPs, associated with carbon formation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Wenkai Zhu, Meiling Chen, Jieun Jang, Minsu Han, Yeonggyun Moon, Junghwan Kim, Jungmok You, Song Li, Teahoon Park, Jeonghun Kim
Summary: Nanocellulose-based aerogels have shown great potential as lightweight and porous materials for CO2 capture. Amino-functionalized nanocellulose aerogels were prepared and exhibited attractive properties in CO2 adsorption, thermal stability, and CO2/CH4 mixture separation.
CARBOHYDRATE POLYMERS
(2024)
Article
Engineering, Chemical
Xionghui Liu, Jianfeng Du, Yu Ye, Yuchuan Liu, Shun Wang, Xianyu Meng, Xiaowei Song, Zhiqiang Liang, Wenfu Yan
Summary: In this study, 1,2,3-triazole functionalized triazine-based porous organic polymers (TT-POPs) were successfully synthesized and their adsorption and separation properties were evaluated. The results showed that TT-POPs have great potential for natural gas purification.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)