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88篇 您的检索式:作者名="Catalysis"
    题名 作者 年代 出处 被引量
1In Situ Synthesis of NaY Zeolite with Coal-Based Kaolin显示文摘NaY zeolites were in-situ synthesized from coal-based kaolin via the hydrothermal method.The effects of various factors on the structure of the samples were extensively investigated. The sampleswere characterized by N2 adsorption, XRD, IR and DTG-DTA methods, and the results show that thecrystallization temperature and amount of added water play an important role in the formation of the zeo-lite structure. The 4A and P zeolites are the competitive phase present in the resulting product. However,NaY zeolites with a higher relative crystallinity, excluding impure crystals and the well hydrothermal sta-bility, can be synthesized from coal-based kaolin. These zeolites possess a larger surface area and a narrowpore size distribution, and this means that optimization of this process might result in a commercial routeto synthesize NaY zeolites from coal-based kaolin.Xinmei Liu, Zifeng Yan, Huaiping Wang, Yantuo LuoState Key Laboratory for Heavy Oil Processing, Key Laboratory of Catalysis, CNPC, University of Petroleum, Dongying 257061, China 2003Journal of Natural Gas Chemistry2003,12,1:8
2CO_2选择性氧化甲烷制C_2烃催化剂La_2O_3/ZnO的氧化还原和CO_2吸附性能显示文摘La2O3/ZnO催化剂体系在以二氧化碳作为氧化剂的甲烷氧化偶联反应中具有很高的C2烃选择性和稳定性.采用CO2-TPD-MS和TPR技术考察了La2O3/ZnO对CO2的吸附性质及其氧化还原行为.结果表明:(1)La2O3/ZnO催化剂体系存在着强、弱两种碱中心,其中弱碱中心数量随样品中La2O3含量增加而减少,强碱中心强度随样品中La2O3含量增加而增强.(2)由于组分相互作用,高温下,La2O3/ZnO易产生晶格氧空位,使之对CO2的吸附增强,吸附后的CO2与晶格氧作用形成立方晶型La2O2CO3.(3)La2O3/ZnO表面的La3+和Zn2+可以部分被还原,由于组分间的相互作用,使得二者的还原都较单一组分存在时更难.(4)H2-CO2-H2氧化还原循环实验表明,La2O3/ZnO表面被部分还原后,CO2可以将部分被还原的表面再氧化.在此基础上对La2O3/ZnO催化剂上甲烷与CO2转化为C2烃的机制也进行了讨论.Chen Changlin, Xu Yide, Cui Wei, Cai Yuran (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023) 1998催化学报1998,19,3:7
3LLDPE prepared by in situ polymerization using a dual-functional catalytic system of Ti(On-Bu)_4 /AlEt_3-Et(Ind)_2-ZrCl_2/MAO显示文摘Linear low-density polyethylene (LLDPE) was prepared by in situ polymerization using a dual-functional catalytic system containing Et(Ind)2ZrCl2/MAO and Ti(On-Bu)4 /AlEt3 used as co-polymerization catalyst and dimeriza-tion catalyst, respectively. The catalytic system showed high activity and the polymer with low melting point, narrow molecular weight distribution (MWD) and low crystallinity was produced.LIU Zhongyang, XU Demin, GUO Cunyue, WANG Jun, HE Dawei & HU YouliangStale Key Lab of Engineering Plastics, Center for Molecular Science, Institute of Chemistry. Chinese Academy of Sciences, Beijing 100080, China Beijing Lab of Catalysis. China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, China 2001Chinese Science Bulletin2001,46,24:7
4Effect of the pore size of Co/SBA-15 isomorphically substituted with zirconium on its catalytic performance in Fischer-Tropsch synthesis显示文摘Cobalt catalysts supported on a series of mesoporous SBA-15 materials isomorphically substituted with zirconium (Zr/Si atomic ratio=1/20) with different pore sizes (5.7 nm,7.8 nm,11.6 nm,17.6 nm) have been synthesized.The catalysts were characterized by transmission electron microscopy,29 Si solid state magic angle spinning (MAS)NMR,N2 adsorption-desorption measurements,X-ray powder diffraction,X-ray photoelectron spectroscopy,H2-temperature programmed reduction,H2-temperature programmed desorption and O2 titrations.The results indicated that larger pore size led to weaker interactions between cobalt and the supports which lowered the temperature of both reduction steps (Co3O4 → CoO and CoO→ Co0).The catalytic performances of the catalysts in Fischer-Tropsch synthesis (FTS) were tested in a fixed bed reactor.It was found that the FTS catalytic activity and product selectivity depended strongly on the pore size of the catalysts.The catalyst with a pore size of 7.8 nm showed the best FTS activity,and the catalyst with a pore size of 17.6 nm showed the highest selectivity to C12-C20 and C20+ hydrocarbons.TAO CongLiang 1,LI JinLin 1 & LIEW Kong Yong 1,2 1 Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education South-central University for Nationalities,Wuhan 430074,China 2 Faculty of Industrial Science and Technology,University Malaysia Pahang,Gambang 26300,Kuantan,Pahang,Malaysia 2010Science China Chemistry2010,53,12:5
5Partial hydrogenation of adiponitrile to 6-aminocapronitrile over Ni/α-Al_2O_3 catalyst promoted with K_2O and La_2O_3显示文摘A novel K2O and La2O3 promoted nickel catalyst supported on a-Al2O3 was prepared by co-impregnation method, and it exhibited higher activity and 6-aminocapronitrile selectivity than Ni/a-Al2O3 during the hydrogenation of adiponitrile in the absence of ammonia, i.e., K2O and La2O3 improved the performance of the nickel-based catalyst.Lei Zhao, Cai Yun Wang, Ji Xiang Chen , Ji Yan Zhang Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China 2007Chinese Chemical Letters2007,18,6:5
6In Situ Regeneration of Mo/MCM-22 with 1%O_2 at Reaction Temperature显示文摘BAI Jie, XIE Sujuan, LIU Shenglin, XU Longya, LIN Liwu (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China) 2003催化学报2003,24,11:4
7CATALYTIC RESEARCH FOR CLEAN ENERGY AND ULTRA-CLEAN FUELS IN THE 21^(st) CENTURY Future Perspectives显示文摘本文系由大连理工大学王祥生教授 (本刊编委 )和郭新闻教授约请美国宾州大学宋春山博士撰写的“2 1世纪清洁能源和超清洁燃料催化研究的未来展望”述评。在本文中笔者系统而扼要地回顾了 2 0世纪全球能源消耗及供求的情况 ,展望了 2 1世纪催化研究面临的机遇 ,着重讨论了清洁能源 ,对催化而言应把综合和有效利用能源作为研究方向。笔者结合美国情况介绍了许多有用的统计数字 ,重点结合自己的研究工作比较全面地阐述了能源燃料工业对催化研究的需求及其机遇。它包括了清洁运输燃料、重油轻质化增产中间馏分油、制氢和燃料电池、天然气利用、天然气液化、替代燃料的发展、煤的综合利用、专用化学品的合成以及CO2 的转化和利用等。煤既作为生产清洁燃料的原料 ,又作为生产专用化学品的资源 ,把在炼油化工中已经取得卓越成果的催化技术、分子筛催化过程转移到煤化工领域 ,笔者对此提出了比较完整的方案。这些对于读者都有很大的帮助。Chun-shan SONG (Clean Fuels and Catalysis Program, The Energy Institute, and Department of Energy & Geo-Environmnetal Engineering, Pennsylvania State University, 209 Academic Projects Building, University Park, PA 16802, USA) 2002石油学报(石油加工)2002,18,6:4
8H_2 production with low CO selectivity from photocatalytic reforming of glucose on metal/TiO_2 catalysts显示文摘H2 with low CO concentration is produced via photocatalytic reforming of glucose (as a representative of biomass component) on metal/TiO2 catalyst (metals: Pt, Rh, Ru, Ir, Au, Ni, Cu). It is shown that the loaded metals generally enhance the rate of H2 production, while they depress the CO selectivity. Both H2 production and CO selectivity are strongly dependent on the kind of deposited metals on TiO2. For example, Rh/TiO2 catalyst is found to be most active for H2 production while with the most extremely low CO concentration from the photocatalytic reforming of glucose.WU GuoPeng1,2, CHEN Tao2, ZHOU GuoHua 2, ZONG Xu2 & LI Can2 1 Laboratory of Plasma Physical Chemistry, Dalian University of Technology, Dalian 116024, China 2 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China 2008Science China Chemistry2008,51,2:4
9Preparation and Characterization of Palladium Colloidal Nanoparticles by Thermal Decomposition of Palladium Acetate with Microwave Irradiation显示文摘A series of solvent-stabilized palladium colloidal nanoparticles were prepared via thermal decomposition of palladium acetate methylisobutylketone (MIBK) solution in the presence of alkali and alcohol with microwave irradiation. The colloidal nanoparticles were characterized with TEM, XPS and XRD. The average diameters of nanoparticles increase from 30 to 40 nm with the increase in concentration of palladium acetate. TEM and XRD observation demonstrated that the palladium colloidal nanoparticles were clusters agglomerated from hundreds of smaller palladium crystallines with size of 3~4 nm. The influence of the concentrations of alkali and alcohol to the particle size was also discussed.Yixian CHEN, Baolin HE and Hanfan LIU Hubei Key Laboratory for Catalysis and Material Science, University of South-Central for Nationalities, Wuhan 430074, China PCLCC, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China 2005Journal of Materials Science & Technology2005,21,2:4
10Ag-ZSM-5 Catalyst for the Catalytic Decomposition of NO显示文摘noxides(mainlyNO)aremajorairpollutantsthatcausephotochemicalsmogandacidrain.Therefore,thereisaworldwideefforttodiscoverimprovedsolutionsfortheeffectiveremovalofNO.emissionsl.UntilnoW,nosuitablecatalystthatcaneffectivelyconvertNOintoN,andO:althoughthe...Jia Wei TENG Tian Xi CAI Xin He BAO(School of Chemical Engineering, Dalian University of Technology, Dalian 116012)(State key Laboratory of Catalysis, Dalian Institute of Chemical Physics. Dalian 116023) 1999Chinese Chemical Letters1999,10,1:3
11Hollow Cancrinite Zeolite Spheres in situ Transformed from Fly Ash Cenosphere显示文摘A novel hollow microsphere structure with cancrinite zeolite grown from the shell of fly ash cenosphere has been successfully prepared through in situ transformation in vapor phase; the orientation and morphology of cancrinite can be greatly improved by adding tetrapropylammonium hydrate into the synthetic system.De Ju WANG, Yi TANG,* An Gang DONG, Ya Hong ZHANG, Ya Jun WANG Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 2003Chinese Chemical Letters2003,14,12:3
12Synthesis of ZSM-35 Zeolite and Its Application in Skeletal Isomerization of 1-Hexene显示文摘XIE Sujuan, WANG Qingxia, XU Longya, WU Zhihua (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, China) 2000催化学报2000,21,4:3
13A ^(13)CO isotopic study on the CO promotion effect in methane dehydroaromatization reaction over a Mo/HMCM-49 catalyst显示文摘The promotion effect of CO in methane dehydroaromatization was investigated using 13CO probe molecules. By alternative injection of 13CO to the methane feed,the distribution of 13CxC6-xH6(x=0-3)products changed significantly,confirming the participation of13CO in the reaction network.The addition of 13CO did not change the conversion of CH4 but improved slightly the durability of the methane dehydroaromatization(MDA)reaction,which might be caused by the interaction of the dissociated oxygen species and the deposited carbon species.The ratio of 13CxC6-xH6(x=0-3)varied with the time on stream,which was determined by the competitive reactions of methane decomposition and 13CO dissociation.Songdong Yao, Changyong Sun, Juan Li, Xiumin Huang, Wenjie Shen State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China 2010Journal of Natural Gas Chemistry2010,19,1:2
14Synthesis of Silica-Dispersed NiMo Hydrodesulfurization Catalysts显示文摘分散硅石的 NiMo hydrodesulfurization 催化剂被免职降水方法综合。为比较目的,体积 NiMo 催化剂被一起沉淀获得。分散硅石的 NiMo 催化剂有高度活跃的金属内容。硅石被采用为活跃部件的完整的利用驱散活跃金属。赌注分析证明分散硅石的 NiMo 催化剂有一个高表面区域(147.0 m2/g ) 和毛孔体积(0.27 mL/g ) ,而体积 NiMo 催化剂展出了一个很低的表面区域(87.5 m2/g ) 。传播电子显微镜学结果证明活跃部件在 SiO2 底层上被驱散。分散硅石的 NiMo 催化剂和体积 NiMo 催化剂的 X 光检查衍射模式被索引到 NiMoO4。分散硅石的 NiMo 催化剂的 hydrodesulfurization 活动比引用催化剂的高得多并且能直到比那些两次大商业 NiMo 支持氧化铝的系统每催化剂的克。测试结果的活动也证明分散硅石的 NiMo 催化剂是有效 hydrodesulfurization 催化剂。Liu Di Liu Lihua Li Guangci Liu Chenguang (State Key Laboratory of Heavy Oil Processing,CNPC Key Laboratory of Catalysis, China University of Petroleum,Qingdao 266555) 2010China Petroleum Processing & Petrochemical Technology2010,12,4:2
15New synthesis of amphiphilic copolymers PE-g-PEO via esterfication显示文摘A new series of high molecular weight amphi-philic graft copolymers PE-g-PEO has been prepared. The esterifications between PE-p-MS-g-MA and PEO with OH group at the chain end are carried out under different condi-tions. The compositions of these graft copolymers are studied by NMR and FTIR. It is found to be a convenient and effi-cient way to prepare high molecular weight PE-g-PEO graft copolymers.L?Yingying1, MA Zhi1,2, HU Youliang1, XU G. X.3 & CHUNG T. C.3 1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Bei-jing Beijing Lab of Catalysis, Key Lab of Catalysis of China Na-tional Petroleum Corporation, Beijing 100080, China 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China 3. Department of Material Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA 2003Chinese Science Bulletin2003,48,6:2
16CARBON NANOTUBES VIA METHANE DECOMPOSITION ON AN ALUMINA SUPPORTED COBALT AEROGEL CATALYST显示文摘An alumina-supported cobalt aerogel catalyst prepared from a sol-gel and a supercritical drying method was used in the catalytic decomposition of methane. The physical-chemical properties of the catalyst were characterized and its activity for methane decomposition was investigated. The effects of calcination and reaction temperatures on the activity of the catalyst and the morphology of the carbon nanotubes produced were discussed. A CoAl2O4 spinel structure formed in the calcined catalyst. The quantity of the nanotubes produced in the reaction increases with the amount of cobalt in the reduced catalyst. A higher reaction temperature leads to a higher reaction rate, though faster deactivation of the catalyst occurs with the change. The carbon nanotubes grown on the catalyst have smooth walls and uniform di-ameter distribution.Lingyu Piao, Jiuling Chen and Yongdan Li* Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China 2003China Particuology2003,1,6:2
17A Kinetic Study of Selective Hydrogenation of Carbon Monoxide to C_2 Oxygenates on Rh-Mn-Li-Fe/SiO_2 Catalyst显示文摘The kinetics of CO hydrogenation for the synthesis of C2 oxygenates over Rh-Mn-Li-Fe/SiO2was investigated. Kinetic parameters for the formation of ethanol, acetaldehyde, C2 oxygenates, methanol and methane were obtained. The activation energy, H2 and CO dependence orders for ethanol and acetaldehyde formation differed greatly, the large difference seemed to imply that they were formed through different intermediates.Hongmei Yin, Yunjie Ding, Hongyuan Luo, Daiping He, Weimiao Chen, Zhiyong Ao, Liwu LinNatural Gas Utilization and Applied Catalysis Laboratory, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, China 2003Journal of Natural Gas Chemistry2003,12,4:2
18Hydrogen Permeation Properties of Perovskite-type BaCe_(0.9)Mn_(0.1)O_(3-δ)Dense Ceramic Membrane显示文摘The electrical conduction properties of dense BaCe0.9Mn0.1O3-d (BCM10) membrane were investigated in the temperature range of 600-900oC. High ionic and electronic conductivities at elevated temperatures make BCM10 a potential ceramic material for hydrogen separation. Hydrogen permeation through BCM10 membranes was studied using a high- temperature permeation cell. Little hydrogen could be detected at the sweep side. However, appreciable hydrogen can permeate through BCM10 membrane coated with porous platinum black, which shows that the process of hydrogen permeation through BCM10 membranes was controlled by the catalytic decomposition and recomposition of hydrogen on the surfaces of BCM10 membranes.Guang Tao LI, Guo Xing XIONG*, Shi Shan SHENG, Wei Shen YANG State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 2001Chinese Chemical Letters2001,12,10:2
19Effect of ceria on copper/γ-alumina catalysts for carbon monoxide and n-hexane oxidation显示文摘Effectofceriaoncopper/γ-aluminacatalystsforcarbonmonoxideandn-hexaneoxidation¥JiangXiaoyuan;ZhouRenxian;YuanXianxin;ZhengXiao...Jiang Xiaoyuan Zhou Renxian Yuan Xianxin Zheng Xiaoming Jin Songshou (Institute of Catalysis, Hangzhou University, Hangzhou 310028, China) 1996Journal of Environmental Sciences1996,8,2:1
20Characterization and states of Cu and Pd in Pd - CuO/ZnO/ZrO2 catalysts for production by methanol partial oxidation 显示文摘Schuyten oxidation hydrogen Catalysis S Guerrero S Miller J T 2009Applied A : General2009,,352:1
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