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Efficient and Quick Inactivation of SARS Coronavirus and Other Microbes Exposed to the Surfaces of Some metal catalysts

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Biomedical and Environmental Sciences 2005年第3期18卷 176-180页

作者： JUNHAN LANCHEN SHU-MINDUAN QING-XIANGYANG MINYANG CHENGAO BAO-YUNZHANG HONGHE XIAO-PINGDONG InstituteforViralDiseaseControlandPrevention ChinaCenterforDiseaseControlandPreventionYingxinRd.100Beijing100052China ResearchCenterforEco-EnvironmentalSciences ChineseAcademyofSciencesBeijing100085China

Objective To study the two metal catalysts Ag/Al2O3 and Cu/Al2O3 that interdict the transmission pathway for SARS and other respiratory infectious diseases. Methods Two metal catalysts Ag/Al2O3 and Cu/Al2O3 were pressed into wafers. One hundred μL 106 TCID50/mL SARS-CoV, 100 μL 106 PFU/mL recombinant baculovirus expressing hamster's prion protein (haPrP) protein and roughly 106 E. coli were slowly dropped onto the surfaces of the catalyst wafers and exposed for 5 and 20 min, respectively. After eluted from the surfaces of wafers, the infectivity of viruses and propagation of bacteria were measured. The expression of PrP protein was determined by Western blot. The morphological changes of bacteria were observed by electronic microscopy. Results After exposure to the catalysts surfaces for 5 and 20 min, the infectivity of SARS-CoV in Vero cells and baculovirus in Sf9 cells dropped down to a very low and undetectable level, and no colony was detected using bacteria culture method. The expression of haPrP protein reduced to 21.8% in the preparation of Sf9 cells infected with recombinant baculovirus exposed for 5 min and was undetectable exposed for 20 min. Bacterial membranes seemed to be cracked and the cytoplasm seemed to be effluent from cell bodies. Conclusion Exposures to the surfaces of Ag/Al2O3 and Cu/Al2O3 destroy the replication and propagation abilities of SARS-CoV, baculovirus and E. coli. Inactivation ability of metal catalysts needs to interact with air, utilizing oxygen molecules in air. Efficiently killing viruses and bacteria on the surfaces of the two metal catalysts has a promising potential for air-disinfection in hospitals, communities, and households.

关键词： metal catalysts Inactivation SARS-CoV Baculovirus E. coli Infectivity

Heterogeneous metal catalysts Derived from Hydrotalcite Precursors: Preparation, Structure and Catalytic Performances

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Heterogeneous Metal Catalysts Derived from Hydrotalcite Prec...

A review on the structure-performance relationship of the catalysts during propane dehydrogenation reaction

中国化学会第十届全国无机化学学术会议

作者： Ming Xu Feng Wang Shan He Hao Cheng Min Wei State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology

Layered double hydroxides(LDHs) are a class of naturally occurring and synthetic materials, which consist of brucite-like host sheets with edge-sharing metal-O6 octahedra and interlayer anions. Recently, considerable interest has been focused on LDH materials as heterogeneous catalysts based on their versatility in chemical composition and structural architecture. In particular, a topotactic transformation of LDH materials to supported metal catalysts occurs upon calcination in a reductive atmosphere. Inspired by the structural merits of LDH materials, we develop a new strategy for the preparation of heterogeneous metal catalysts, including mono-metal, alloys, intermetallic compounds, metal phosphides and metal sulfides. These materials take the advantages of high dispersion and stability. Their catalytic performances have been evaluated in several reactions including CO methanation, selective hydrogenation and electrochemical oxidation. Based on the tunability of LDHs precursors and transformation conditions, our approach holds significant promise in the design and synthesis of heterogeneous metal catalysts with desired structure and high performances.

关键词： metal catalysts Hydrotalcite precursors Preparation Structure Catalytic performances

来源： cnki会议评论

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Petroleum Science 2022年第2期19卷 819-838页

作者： Bohan Feng Yue-Chang Wei Wei-Yu Song Chun-Ming Xu State Key Laboratory of Heavy Oil Processing College of ScienceChina University of PetroleumBeijing102249People's Republic of China

Dehydrogenation of propane(PDH)technology is one of the most promising on-purpose technologies to solve supply-demand unbalance of *** industrial catalysts for PDH,such as Pt-and Cr-based catalysts,still have their own limitation in expensive price and security ***,a deep understanding into the structure-performance relationship of the catalysts during PDH reaction is necessary to achieve innovation in advanced high-efficient *** this review,we focused on discussion of structure-performance relationship of catalysts in *** on analysis of reaction mechanism and nature of active sites,we detailed interaction mechanism between structure of active sites and catalytic performance in metal catalysts and oxide *** relationship between coke deposition,co-feeding gas,catalytic activity and nanostructure of the catalysts are also *** these discussions on the relationship between structure and performances,we try to provide the insights into microstructure of active sites in PDH and the rational guidance for future design and development of PDH catalysts.

关键词： Dehydrogenation of propane metal catalysts Oxide catalysts Structure-performance relationship Active site Reaction mechanism

3D printing of metal-based materials for renewable energy applications

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Nano Research 2021年第7期14卷 2105-2132页

作者： Shahryar Mooraj Zhen Qi Cheng Zhu Jie Ren Siyuan Peng Liang Liu Shengbiao Zhang Shuai Feng Fanyue Kong Yanfang Liu Eric B.Duoss Sarah Baker Wen Chen Department of Mechanical and Industrial Engineering University of MassachusettsAmherstMA01003-2210USA Lawrence Livermore National Laboratory 7000 East AvenueLivermoreCA94550USA Department of Materials Science and Engineering Rensselaer Polytechnic InstituteTroyNY12180USA

Large-scale renewable energy must overcome conversion and storage challenges before it can replace fossil fuels due to its intermittent ***,current sustainable energy devices still suffer from high cost,low efficiency,and poor service life ***,porous metal-based materials have been widely used as desirable cross-functional platforms for electrochemical and photochemical energy systems for their unique electrical conductivity,catalytic activity,and chemical *** tailor the porosity length scale,ordering,and compositions,3D printing has been applied as a disruptive manufacturing revolution to create complex architected components by directly joining sequential layers into designed *** article intends to summarize cutting-edge advances of metal-based materials for renewable energy devices(e.g.,fuel cells,solar cells,supercapacitors,and batteries)over the past decade.

关键词： renewable energy metal catalysts nanomaterials porous structure 3D printing additive manufacturing

Brief review of hydrocarbon-reforming catalysts map for hydrogen production

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能源评论(英文) 2023年第3期2卷 51-62页

作者： Qunwei Guo Jiaqi Geng Jiawen Pan Lu Zou Yunfeng Tian Bo Chi Jian Pu School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science&TechnologyWuhanHubei430074PR China Key Laboratory of Green Chemical Engineering Process of Ministry of Education School of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhanHubei430073PR China Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization School of Materials Science and PhysicsChina University of Mining and TechnologyXuzhou221116PR China

Hydrogen energy,the cleanest fuel,presents extensive applications in renewable energy technologies such as fuel ***,the transition process from carbon-based(fossil fuel)energy to desired hydrogen energy is usually hindered by inevitable scientific,technological,and economic obstacles,which mainly involves complex hydrocarbon reforming ***,this paper provides a systematic and comprehensive analysis focusing on the hydrocarbon reforming ***,recent related studies are summarized to clarify the intrinsic difference among the reforming *** to objectively assess the activated catalyst and deactivation mechanism,the rate-determining steps of reforming process have been emphasized,summarized,and ***,the effect of metals and supports on individual reaction processes is discussed followed by the metalsupport *** tendency and research map could be established to promote the technology development and expansion of hydrocarbon reforming *** review could be considered as the guideline for academics and industry designing appropriate catalysts.

关键词： Hydrogen production Reforming mechanism metal-support interaction metal catalysts Supports properties

Hydrogen production by catalytic decomposition of methane using a Fe-based catalyst in a fluidized bed reactor

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Journal of Natural Gas Chemistry 2012年第4期21卷 367-373页

作者： D.Torres S.deLlobet J.L.Pinilla M.J.Lzaro I.Suelves R.Moliner Instituto de Carboquímica CSICMiguel Luesma Castn 450018 ZaragozaSpain

Catalytic decomposition of methane using a Fe-based catalyst for hydrogen production has been studied in this work. A Fe/Al2O3 catalyst previously developed by our research group has been tested in a fluidized bed reactor （FBR）. A parametric study ot the effects of some process variables, including reaction temperature and space velocity, is undertaken. The operating conditions strongly affect the catalyst performance. Methane conversion was increased by increasing the temperature and lowering the space velocity. Using temperatures between 700 and 900℃ and space velocities between 3 and 6 LN/（gcat·h）, a methane conversion in the range of 25%-40% for the gas exiting the reactor could be obtained during a 6 h run. In addition, carbon was deposited in the form of nanofilaments （chain like nanofibers and multiwall nanotubes） with similar properties to those obtained in a fixed bed reactor.

关键词： hydrogen production fluidized bed reactor metal catalysts

Synthesis of Some New Long-chain Salen catalysts

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Chemical Research in Chinese Universities 2001年第Z1期17卷 180-181页

作者： WU JinCai Departnent of Chemistry Lanzhou University Lanzhou 730000Albert S.C.CHAN Department of Applied Biology and Chemical technology Hong Kong Polytechnic University

In the research of enantioselective epoxidation of unfunctionalized alkenes using Salen compounds, Katasuki1 and Jacobsen2 pointed out that 3 and 3′ groups of Salen were very important to increase the e.e of the catalytic product. Recently, in order to explore useful information concerning molecular design of metal catalysts for enantioselective epoxidation of trans-disubstituted alkenes, which remains an unresolved problem in the field of metal-catalyzed asymmetric epoxidation of unfunctionalized alkenes,some new Salen compounds containing long-chain in 3 and 3′ were designed and synthesized. We think these 3 and 3′ long-chain groups not only do as bulky group, but also act as second introduced chiral source. The following is the route:

关键词： enantioselective epoxidation asymmetric epoxidation molecular design metal catalysts

Synthesis of Diaryl Ethers, Diaryl Sulfides, Heteroaryl Ethers and Heteroaryl Sulfides under Microwave Heating

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有机化学 2004年第Z1期24卷 387-页

作者： LI,Feng ZOU,Jiong WANG,Quan-Rui TAO,Feng-Gang Department of Chemistry Fudan University Shanghai 200433 Department of Chemistry Fudan University Shanghai 200433 Department of Chemistry Fudan University Shanghai 200433 Department of Chemistry Fudan University Shanghai 200433

　　Diaryl ether moiety is found in a pool of naturally occurring and medicinally important compounds.[1] As a consequent, considerable efforts have been devoted to the assembly of this framework.[2] Recently, we have developed a microwave heating version of the synthesis of diaryl ethers as well as aryl sulfides. Under our conditions, even the extremely electron-poor 4-nitrophenol works well and its reaction with 1-halo-4-nitrobenzenes produces 4-(nitrophenoxy)-benzonitriles in satisfactory yield. The scope of the present protocol has been expanded to hydroxylated six-membered heterocycles as well as 2-pyrimidinethiol with mildly activated aryl halides, affording heteroaryl ethers and respectively sulfides. The advantages of the present method include the wide substrate scope, no use of any metal catalysts, the ease of product isolation and high yields.……

关键词： microwave heating metal catalysts aryl halides

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石墨在高温形成的TEM原位动态观察

现代科学仪器 2006年第Z1期23卷 49-页

作者：木田年紀 TAKAI Y 大阪大学材料与生命科学系日本

　　New carbon materials such as nanotubes and fullerenes are currently in the spotlight because of their remarkable properties and their potential to affectbroad areas of science and ***,it is important to clarify the roles of metal catalysts on the synthesis of new carbons for controlling their structures and ***,the formation mechanisms of new carbons are still unclear despite the large amount of progress that has been reported concerning synthesis and *** is partly because only a few direct observations of graphite formation have been reported under ordinary synthesis conditions[1-2].……

关键词：石墨原位 high temperature carbon materials metal catalysts