Article
Chemistry, Physical
Abou Houraira Abaidi, Brahim Madani
Summary: This numerical study investigates the effects of catalyst morphology CuO/ZnO/Al2O3 on hydrogen production from methanol steam reforming for proton exchange membrane fuel cells. The study focuses on the influences of metal foam insert, catalyst layer segmentation, and metal foam as catalyst support on reactor performance. The results show that these configurations improve reformer performances compared to continuous catalyst layer configuration, with metal foam insertion increasing efficiency by up to 75.41% at 525 K.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Hai Wang, Liang Wang, Dong Lin, Xiang Feng, Xuefeng Chu, Lina Li, Feng-Shou Xiao
Summary: This study demonstrates that utilizing titanosilicalite-1 (TS-1) zeolite as a support can efficiently accelerate methanol steam reforming reaction, increase hydrogen productivity, and stabilize Pt nanoparticles by modifying surface charge state, preventing sintering.
Article
Engineering, Environmental
Zilong Shao, Shunan Zhang, Chaojie Huang, Haozhi Zhou, Junjun Chen, Yuhan Sun, Hui Wang
Summary: This study investigates the use of Na-promoted Co2C nanoprism catalysts with different Na loadings in methanol steam reforming (MSR). The 1Na/Co2C catalyst demonstrates excellent activity and stability, with H2 production rates higher than most reported catalysts. The strong interaction between Na and Co2C stabilizes the catalyst and promotes the dissociation of CH3OH and H2O. DFT calculations reveal that the Co2C (1 01) surface has the lowest energy barrier, and the dehydrogenation of methoxy is the rate-determining step. This work provides valuable insights into the rational design of transition-metal carbide catalysts for MSR.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Tianqing Zheng, Dongjie Zhou, Youji Zhan, Yongchao Xu
Summary: By optimizing the integration design of the self-thermal methanol steam reforming microreactor, the hydrogen production capability can be enhanced, resulting in increased methanol conversion rate and hydrogen yield.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Hsin-Kai Huang, Yi-Kai Chih, Wei-Hsin Chen, Cheng-Yu Hsu, Kai-Jhei Lin, Hong -Ping Lin, Chun-Han Hsu
Summary: A green template-free method is proposed for the synthesis of mesoporous Ni-Cu/Al2O4 catalyst, which shows excellent catalytic performance and regeneration capability in methanol steam reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Shiqing Jin, Didi Li, Zhen Wang, Yiming Wang, Li Sun, Minghui Zhu
Summary: Cu/CeO2 catalysts prepared by a deposition-precipitation method with various loadings were investigated using in situ characterization techniques. The catalyst surface contains metallic Cu-0 and interfacial sites, with the latter being the key active sites for the methanol steam reforming reaction. Furthermore, the structures of both sites change dynamically in response to different environmental conditions.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Energy & Fuels
Tianqing Zheng, Wei Zhou, Yifan Yang, Yuchen Zhong, Huihui You, Xinying Li, Xuyang Chu, Kwan San Hui, Weihua Ding
Summary: A novel approach using nickel foam with multiple microchannels as combustion reaction support in self-heating methanol steam reforming microreactor was proposed. Numerical simulations and experimental results show that this design can effectively improve hydrogen production performance, reduce temperature difference, and maximum temperature.
Article
Energy & Fuels
Mingqiang Chen, Guowei Sun, Yishuang Wang, Defang Liang, Chang Li, Jun Wang, Quan Liu
Summary: The study focuses on improving the catalytic performance of methanol steam reforming (MSR) by supporting Cu-Zr components on AZ, which enhances the catalytic activity and promotes efficient hydrogen production.
Article
Chemistry, Physical
Jinxing Wei, Tangkang Liu, Yanqiu Wang, Dengwei Jing, Xinlin Hong, Guoliang Liu
Summary: This study reports a high-performance ZnZr-0.5 composite oxide catalyst for methanol steam reforming, which shows excellent catalytic activity and long-term stability. The synergistic effect of ZnO-ZrO2 dual active sites is crucial for the catalyst's activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
Hao Meng, Yusen Yang, Tianyao Shen, Zhiming Yin, Lei Wang, Wei Liu, Pan Yin, Zhen Ren, Lirong Zheng, Jian Zhang, Feng-Shou Xiao, Min Wei
Summary: In this study, Cu/Cu(Al)O-X catalysts with Cu-0-Cu+ sites were prepared and optimized. The catalyst showed high methanol conversion and hydrogen production rates, and remained stable for 300 hours. A correlation between the methanol reaction rate and surface concentrations of Cu0 and Cu+ was established based on kinetic studies. Intrinsic active sites in the catalyst were investigated using in situ spectroscopy characterization and theoretical calculations.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Chenxu Guo, Hanning Xiao, Wenming Guo, Tingting Bao, Jiawei Xie, Hang Qin, Pengzhao Gao
Summary: CuO-ZnO-CeO2 catalysts were prepared on Al2O3/cordierite monolith through sol-gel combustion method, and the effects of combustion temperature on the properties and performance of the catalysts were investigated. The catalyst (CZC-400) prepared at 400 degrees C showed uniform distribution on the monolith with smaller particle size (4.2 nm) and higher surface area (23.7 m(2) g(-1)). In methanol steam reforming, CZC-400 exhibited 100% methanol conversion at 260 degrees C without by-product CO, and maintained excellent catalytic activity and stability for 32 hours.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Filippo Bossola, Thantip Roongcharoen, Mauro Coduri, Claudio Evangelisti, Ferenc Somodi, Luca Sementa, Alessandro Fortunelli, Vladimiro Dal Santo
Summary: The addition of In as a promoter in a Cu/SiO2 catalyst enhances H-2 productivity by facilitating H2O activation through improved electronic properties of the Cu phase, leading to better interaction with small Cu nanoparticles and silica.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Physical
Jeongmee Kang, Youjung Song, Taejun Kim, Sungtak Kim
Summary: This review paper summarizes the trends in the development of methanol steam reforming (MSR) reactor systems, including microreactors and membrane reactors, as well as various structured catalyst materials suitable for complex reactors. In addition, other engineering approaches to achieve highly efficient MSR reactors for hydrogen production are discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Opeoluwa O. Fasanya, Abdulazeez Y. Atta, Myo T. Z. Myint, Joydeep Dutta, Baba Y. Jibril
Summary: CuZn-based catalysts synthesized by different methods showed diverse physico-chemical properties. Catalysts prepared by one pot hydrothermal synthesis and coimpregnation exhibited the highest methanol conversion and H2 selectivity, indicating that catalytic activity is largely affected by the nature of Cu species within the catalyst matrix.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Masoumeh Khanchi, Seyed Mohammad Ali Mousavian, Saeed Soltanali
Summary: The experimental results show that SiO2-Al2O3-based catalysts perform better than SiO2 and Al2O3-based catalysts, with the best performance observed at lower Si/Al ratios.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Shunan Zhang, Xiaofang Liu, Zilong Shao, Hui Wang, Yuhan Sun
JOURNAL OF CATALYSIS
(2020)
Review
Chemistry, Applied
Shunan Zhang, Zhaoxuan Wu, Xiufang Liu, Kaimin Hua, Zilong Shao, Baiyin Wei, Chaojie Huang, Hui Wang, Yuhan Sun
Summary: The conversion of CO2 with hydrogen into value-added chemicals is a promising approach to addressing global climate change. Current research focuses on the direct hydrogenation of CO2 to produce methanol and higher alcohols, with a need for further advancements in catalyst design and mechanistic investigation.
TOPICS IN CATALYSIS
(2021)
Article
Chemistry, Physical
Shunan Zhang, Zhaoxuan Wu, Xiaofang Liu, Zilong Shao, Lin Xia, Liangshu Zhong, Hui Wang, Yuhan Sun
Summary: Stable Na-Co2C active sites were obtained by enhancing the interaction between Na and Co species, leading to improved efficiency in CO2 hydrogenation to ethanol.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Chaojie Huang, Zhaoxuan Wu, Hu Luo, Shunan Zhang, Zilong Shao, Hui Wang, Yuhan Sun
Summary: The study successfully improved the performance of CO2 hydrogenation at high temperature using a Pd/ZnZr catalyst, achieving high methanol selectivity and yield.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Shunan Zhang, Xiaofang Liu, Hu Luo, Zhaoxuan Wu, Baiyin Wei, Zilong Shao, Chaojie Huang, Kaimin Hua, Lin Xia, Jiong Li, Lei Liu, Weitong Ding, Hui Wang, Yuhan Sun
Summary: This study presents a mechanism for modulating the morphologies of transition metal carbides (TMCs) in gas-solid reactions to improve their catalytic performance. By influencing the generation and amount of carboxylate species on hollow cubic Co3O4, the researchers were able to manipulate the prismatic and spherical Co2C nanocrystals. The Co2C nanoprisms showed excellent activity in reverse water gas shift (RWGS) and bridged RWGS and Fischer-Tropsch synthesis reactions, allowing for the direct synthesis of olefins and alcohols.
Article
Chemistry, Multidisciplinary
Lin Li, Hu Luo, Zilong Shao, Haozhi Zhou, Junwen Lu, Junjun Chen, Chaojie Huang, Shunan Zhang, Xiaofang Liu, Lin Xia, Jiong Li, Hui Wang, Yuhan Sun
Summary: We present a tandem catalytic conversion of LDPE into naphtha, the key feedstock for renewable plastic production, to address the serious environmental problem and resource waste of plastic pollution. The use of beta zeolite and silicalite-1-encapsulated Pt nanoparticles (Pt@S-1) enables a high naphtha yield of 89.5% and selectivity of 96.8% for C5-C9 hydrocarbons at 250 degrees C. This method utilizes acid sites to crack LDPE into olefin intermediates, which then encounter Pt nanoparticles within the channels of Pt@S-1 for hydrogenation and selective shipping of the resulting olefins, leading to the formation of narrow-distributed alkanes. Conceptually, this approach is suitable for closing the plastic loop, offering significant energy savings of 15% and a 30% reduction in greenhouse gas emissions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Baiyin Wei, Xiaofang Liu, Qingyu Chang, Shenggang Li, Hu Luo, Kaimin Hua, Shunan Zhang, Junjun Chen, Zilong Shao, Chaojie Huang, Hui Wang, Yuhan Sun
Summary: Researchers have successfully designed an atomically dispersed Au catalyst confined in zeolite with excellent activity and selectivity for propene hydroformylation. Detailed characterizations and theoretical calculations indicate that the isolated Au atoms within the zeolite matrix are stabilized via oxygen-bridge bonds and function as the most efficient active sites.
Article
Chemistry, Multidisciplinary
Baiyin Wei, Junjun Chen, Xiaofang Liu, Kaimin Hua, Lin Li, Shunan Zhang, Hu Luo, Hui Wang, Yuhan Sun
Summary: In this study, a rhodium-like single-atom cobalt catalyst was successfully developed to enhance the catalytic activity of olefin hydroformylation, surpassing heterogeneous cobalt-based catalysts and approaching the performance of rhodium catalysts. The catalyst showed excellent stability and retained high activity even after five repeated uses. The study revealed that electronic metal-support interaction played a pivotal role in improving the catalyst's performance.
CELL REPORTS PHYSICAL SCIENCE
(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)