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Catalytic decomposition of methane to produce hydrogen:A review

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Journal of Energy Chemistry 2021年第7期30卷 415-430页

作者： Zeyu Fan wei weng Jing Zhou Dong Gu wei Xiao School of Resource and Environmental Sciences Hubei International Scientiﬁc and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072HubeiChina College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina The Institute for Advanced Studies Wuhan UniversityWuhan 430072HubeiChina

The increasing demands of hydrogen and the recent discovery of large reserves of methane have prompted the conversion of methane to *** challenges raised by intensive CO_(2) emission from the traditional conversion of methane have provoked emission-free hydrogen production from *** catalytic decomposition of methane(CDM) to produce hydrogen and advanced carbon hence comes into consideration due to the short process and environmental *** many researchers have made considerable progress in CDM research on the laboratory scale,CDM is still in its infancy in *** history of its development,fundamental mechanisms,and recent research progress in catalysts and catalytic systems are herein *** problems of catalytic interface degradation are reviewed,focusing on deactivation from coke deposition in the CDM *** introduction of a liquid phase interface which can in-situ remove carbon products provides a new strategy for this ***,the challenges and prospects for future research into novel CDM catalysts or catalyst systems are included.

关键词： Hydrogen production Methane decomposition Metal-based catalysts Carbon-based catalysts Liquid catalyst

Effects of K and Mn promoters over Fe2O3 on Fischer–Tropsch synthesis

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Journal of Energy Chemistry 2020年第8期29卷 118-127,I0004页

作者： Teng Lv wei weng Jing Zhou Dong Gu wei Xiao School of Resource and Environmental Sciences Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072HubeiChina The Institute for Advanced Studies Wuhan UniversityWuhan 430072.HubeiChina

Structural and compositional design of core-shell structure is an effective strategy towards enhanced ***,amorphous MnO2 nanosheets and K+-intercalated layered MnO2 nanosheets are controllably assembled over Fe2O3 spindles,in which the MnO2 nanosheets are perpendicularly anchored to the surface of *** a core shell structure contributes to a high specific surface area and abundant pore channels on the surface of *** addition,the existence of K+provides large numbers of basic sites and restrains the formation of unpleasant(Fe1-xMnx)*** from the merits in structure and composition,CO adsorption is enhanced and remaining time of intermediates is prolonged on the surfaces of catalysts during the Fischer–Tropsch synthesis(FTS),facilitating to the formation of active iron carbides and C–C coupling ***,the Fe2O3@K+-Mn O2 shows both a high CO conversion of 82.3%and a high C5+ selectivity of 73.1%.The present study provides structural and compositional rationales on design high-performance catalysts towards FTS.

关键词： Fischer–Tropsch synthesis K promoter Mn promoter CO conversion C5+selectivity

Interfacial confinement of Ni-V2O3 in molten salts for enhanced electrocatalytic hydrogen evolution

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Journal of Energy Chemistry 2020年第11期29卷 280-285页

作者： Jing Zhou Hansheng Xiao wei weng Dong Gu wei Xiao College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina School of Resource and Environmental Sciences Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072HubeiChina The Institute of Advanced Studies.Wuhan University Wuhan 430072HubeiChina

Implementation of non-precious electrocatalysts is key-enabling for water electrolysis to relieve challenges in energy and environmental sustainability. Self-supporting Ni-V2O3 electrodes consisting of nanostrip-like V2O3 perpendicularly anchored on Ni meshes are herein constructed via the electrochemical reduction of soluble NaVO3 in molten salts for enhanced electrocatalytic hydrogen evolution. Such a special configuration in morphology and composition creates a well confined interface between Ni and V2O3. Experimental and Density-Functional-Theory results confirm that the synergy between Ni and V2O3 accelerates the dissociation of H2O for forming hydrogen intermediates and enhances the combination of H*for generating H2.

关键词： Hydrogen evolution Electrochemistry Molten salt Ni V2O3

Controllable conversion of rice husks to Si/C and SiC/C composites in molten salts

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Journal of Energy Chemistry 2021年第4期30卷 102-107页

作者： Da Pang wei weng Jing Zhou Dong Gu wei Xiao School of Resource and Environmental Sciences Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072HubeiChina College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina The Institute of Advanced Studies Wuhan UniversityWuhan 430072HubeiChina

Direct conversion of biomass to functional materials is an ideal solution to relieve challenges in environmental and energy *** herein demonstrate a molten salt thermoelectrolysis of rice husks(RHs)mainly consisting of organic mass and biosilica to achieve high-efficiency and upgraded utilization of both Si and C in *** coupling pyrolysis of organic mass with electrochemical reduction of silica in molten salts,the thermoelectrolysis of RHs in molten CaCl_(2)-NaCl at 800℃ refines the RHs and acidleached RHs to SiC nanowire/C(SiC-NW/C)and Si nanoparticle/C(Si-NP/C),*** present study highlights the molten salt thermoelectrolysis for reclamation of biomass wastes in an affordable and controllable manner.

关键词： Rice husks Molten salt Silicon Silicon carbide Electrochemistry

A visual analysis approach for data imputation via multi-party tabular data correlation strategies

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Frontiers of Information Technology & Electronic Engineering 2024年第3期25卷 398-414页

作者： Haiyang ZHU Dongming HAN Jiacheng PAN Yating wei Yingchaojie FENG Luoxuan weng Ketian MAO Yuankai XING Jianshu LV Qiucheng WAN wei CHEN The State Key Lab of CAD&CG Zhejiang UniversityHangzhou 310058China Wuchan Zhongda Digital Technology Co. Ltd.Hangzhou 310020China Zhejiang Metals and Materials Co. Ltd.Hangzhou 310005China

Data imputation is an essential pre-processing task for data governance,aimed at filling in incomplete ***,conventional data imputation methods can only partly alleviate data incompleteness using isolated tabular data,and they fail to achieve the best balance between accuracy and *** this paper,we present a novel visual analysis approach for data *** develop a multi-party tabular data association strategy that uses intelligent algorithms to identify similar columns and establish column correlations across multiple ***,we perform the initial imputation of incomplete data using correlated data entries from other ***,we develop a visual analysis system to refine data imputation *** interactive system combines the multi-party data imputation approach with expert knowledge,allowing for a better understanding of the relational structure of the *** significantly enhances the accuracy and eficiency of data imputation,thereby enhancing the quality of data governance and the intrinsic value of data *** validation and user surveys demonstrate that this method supports users in verifying and judging the associated columns and similar rows using theirdomain knowledge.

关键词： Data governance Data incompleteness Data imputation Data visualization Interactive visual analysis

Genetic mechanism of body size variation in groupers:Insights from phylotranscriptomics

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Zoological Research 2024年第2期45卷 314-328页

作者： wei-wei Zhang Zhuo-Ying weng Xi Wang Yang Yang Duo Li Le Wang Xiao-Chun Liu Zi-Ning Meng State Key Laboratory of Biocontrol Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory of Aquatic Economic AnimalsSchool of Life SciencesSun Yat-sen UniversityGuangzhouGuangdong 510275China Southern Laboratory of Ocean Science and Engineering(Zhuhai) ZhuhaiGuangdong 519000China Area of Ecology and Biodiversity School of Biological SciencesUniversity of Hong KongHong Kong SAR 999077China Molecular Population Genetics Group Temasek Life Sciences LaboratorySingapore City 117604Singapore

Animal body size variation is of particular interest in evolutionary biology,but the genetic basis remains largely *** studies have shown the presence of two parallel evolutionary genetic clusters within the fish genus Epinephelus with evident divergence in body size,providing an excellent opportunity to investigate the genetic basis of body size variation in ***,we performed phylotranscriptomic analysis and reconstructed the phylogeny of 13 epinephelids originating from the South China *** genetic clades with an estimated divergence time of approximately 15.4 million years ago were correlated with large and small body size,respectively.A total of 180 rapidly evolving genes and two positively selected genes were identified between the two *** enrichment analyses of these candidate genes revealed distinct enrichment categories between the two *** pathways and genes may play important roles in body size variation in groupers through complex regulatory *** on our results,we speculate that the ancestors of the two divergent groups of groupers may have adapted to different environments through habitat selection,leading to genetic variations in metabolic patterns,organ development,and lifespan,resulting in body size divergence between the two locally adapted *** findings provide important insights into the genetic mechanisms underlying body size variation in groupers and species differentiation.

关键词： Phylotranscriptomics Grouper Body size Rapidly evolving genes(REGs) Positively selected genes(PSGs)

Enhanced electrodeposition and separation of metallic Cr from soluble K2CrO4 on a liquid Zn cathode

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Journal of Energy Chemistry 2020年第1期29卷 204-211,I0007页

作者： wei weng Zhi Wang Zhancheng Guo Shuqiang Jiao Mingyong Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Resource and Environmental Sciences Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072HubeiChina Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production TechnologyInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Carbon contamination and the formation of low-valence oxides limit the preparation of refractory metals by molten salt *** this paper,a liquid Zn cathode is adopted for the electrochemical reduction of soluble K2CrO4 to metallic Cr in CaCl2-KCl molten *** is found that CrO4^2-can be directly electrochemically reduced to Cr via a six-electron-transfer step and low-valence Cr oxides is hardly *** reduction rate is obviously increased from 16.7 mgCrh^-1cm^-2 on the solid Mo cathode to58.7 mgCrh-1cm-2on liquid Zn *** electrodeposited Cr is distributed in liquid Zn *** contamination is effectively avoided due to the negligible solubility of carbon in the liquid Zn ***,Cr can be effectively separated and enriched to the bottom of liquid Zn under supergravity field,realizing the efficient acquisition of metallic Cr and recycling of liquid *** method herein provides a promising route for the preparation of refractory metals with high-purity by molten salt electrolysis.

关键词： Molten salt electrolysis Liquid Zn cathode Carbon contamination K2CrO4 Metallic Cr

In the Spirit of Benevolence:Taking Action to Fight Against the COVID-19 Pandemic

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Chinese Medicine and Culture 2022年第3期5卷 176-181页

作者： Xu-Jie Wang Wan-Tong Zhang Xue-Xue Zhang Jia-Xi Li Qiu-Yan Li wei-Liang weng Xiyuan Hospital China Academy of Chinese Medical SciencesBeijing 100091China Graduate school China Academy of Chinese Medical SciencesBeijing 100700China Graduate school Shanxi University of Chinese MedicineTaiyuan 030024China

Confucian doctors are representative of traditional Chinese medicine(TCM)practitioners with excellent moral character and medical knowledge,they are not hidden in the depths of ancient documents but are a guiding inspiration for professional medical personnel *** doctors are representative group of benevolence in Confucian philosophy and demonstrate the scientific and humanistic spirit of Confucian philosophy and demonstrate the scientific and humanistic spirit of Confucianism in their medical *** are also leading medical practitioners who uphold professional ethics in their pursuits of scientific research,clinical diagnosis&treatment,and *** TCM and Confucian doctors played important roles during the outbreak of the coronavirus disease 2019(COVID-19)pandemic in *** virtue of the superb medical skills of Confucian doctors,integrated Chinese and Western medicine can quickly alleviate patients’symptoms,increase cure rates,reduce mortality rates,thus saving *** the results of extensive clinical trials,this integrated therapy is now understood to be a beneficial treatment for *** combination of TCM and Western medicine is a major feature of COVID-19 prevention and control in *** particular,TCM plays a significant role in the fight against the COVID-19 pandemic with its unique advantages.

关键词： Benevolence Confucian doctor COVID-19 Chinese medicine Integrated Chinese and Western medicine Medical ethics

Thermodynamic analysis on the direct preparation of metallic vanadium from NaVO_3 by molten salt electrolysis

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Chinese Journal of Chemical Engineering 2016年第5期24卷 671-676页

作者： wei weng Mingyong Wang Xuzhong Gong Zhi Wang Zhancheng Guo State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of Sciences

A novel and environmentally friendly route to directly prepare metallic vanadium from NaV03 by molten salt electrolysis is proposed. The feasibility about the direct electro-reduction of NaV03 to metallic vanadi- um is analyzed based on the thermodynamic calculations and experimental verifications. The theoretical decomposition voltage of NaV03 to metallic vanadium is only 0.47 V at 800 ℃ and much lower than that of the alkali and alkali earth metal chloride salts. The value is slightly higher than that of low-valence vanadium oxides such as V203, V305 and VO. However, the low-valence vanadium oxides can he further electro-reduced to metallic vanadium thermodynamically. The thermodynamic analysis is verified by the experimental results. The direct preparation of metallic vanadium from NaV03 by molten salt electrolysis is feasible.

关键词： Molten salt electrolysis NaV03 Thermodynamic analysis Metallic vanadium Decomposition voltage