检索结果-南通市图书馆

Simultaneous recovery of carbon and sulfur resources from reduction of CO_2 with H_2S using catalysts

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2016年第1期25卷 110-116页

作者： Hui Su Yuyang Li Ping Li Yongxiu Chen Zhizhi Zhang Xiangchen Fang State Key Laboratory of Chemical Engineering East China University of Science and Technology fushun {1. institute of petroleum & petrochemicals Sinopec

An approach to the simultaneous reclamation of carbon and sulfur resources from CO2 and H2S has been proposed and effectively implemented with the aid of catalysts. A brief thermodynamic study reveals the potential of direct reduction of CO2 with H2S（1.：1. mol% balanced with N2） for selective production of CO and elemental sulfur. The experiments carried out in a fixed-bed flow reactor over the temperature range of 400–800 °C give evidence of the importance of the employment of catalysts. Both the conversions of the reactants and the selectivities of the target products can be substantially promoted over most catalysts studied. Nevertheless, little difference appears among their catalytic performance. The results also prove that the presence of CO2 can remarkably enhance H2S conversion and the sulfur yield in comparison with H2S direct decomposition. A longtime reaction test on Mg O catalyst manifests its superior durability at high temperature（700 °C） and huge gas hourly space velocity（1.0,000 h-1.. Free radicals initiated by catalysts are supposed to dominate the reactions between CO2 and H2S.

关键词： Carbon dioxide Hydrogen sulfide Simultaneous recovery Reduction Catalyst

Study on the Extra-framework Aluminium in REUSY Zeolites

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1993年第17期38卷 1446-1450页

作者：鲍书林傅军须沁华童广明张奎喜 Department of Chemistry Nanjing University fushun {1. institute of petroleum and petrochemicals

1.Introduction Recently, catalytic cracking catalysts have been developed from using USY zeolites as octane enhancement catalysts (mainly to improve the research-method octane number) to employing REUSY zeolites as high octane number-high gasoline yield catalysts (octanebarreled catalyst). The peculiarities of REUSY zeolites are the increase of the researchmethod octane number, the motor-method octane number and the gasoline yield. At pres-

关键词： REUSY zeolites extra-framework aluminium cracking catalysts.

Oxidation of CO on Nanometer Metal Oxides at Low Temperatures

在线全文

学校读者我要写书评

暂无评论

Chemical research in Chinese Universities 1997年第4期13卷 75-77页

作者： ZHANG Wen-xiang JIA Ming-jun ZHAO Ing-zhe ZHANG Chun-lei WU Tong-hao WANG Xue-guang SUN Tie Department of Chemistry Jilin UniversityChangchun130023 fushun {1. institute of petroleum and petrochemicals Fushun113001 Environmental Monitor Centre of Harbin Harbin150076

ＯｘｉｄａｔｉｏｎｏｆＣＯｏｎＮａｎｏｍｅｔｅｒＭｅｔａｌＯｘｉｄｅｓａｔＬｏｗＴｅｍｐｅｒａｔｕｒｅｓ＊ＺＨＡＮＧＷｅｎ－ｘｉａｎｇ＊＊，ＪＩＡＭｉｎｇ－ｊｕｎ，ＺＨＡＯＪｉｎｇ－ｚｈｅ，ＺＨＡＮＧＣｈｕｎ－ｌｅｉ... 详细信息

ＯｘｉｄａｔｉｏｎｏｆＣＯｏｎＮａｎｏｍｅｔｅｒＭｅｔａｌＯｘｉｄｅｓａｔＬｏｗＴｅｍｐｅｒａｔｕｒｅｓ＊ＺＨＡＮＧＷｅｎ－ｘｉａｎｇ＊＊，ＪＩＡＭｉｎｇ－ｊｕｎ，ＺＨＡＯＪｉｎｇ－ｚｈｅ，ＺＨＡＮＧＣｈｕｎ－ｌｅｉ，ＷＵＴｏｎｇ－ｈａｏ（Ｄｅｐａｒ...

关键词： Oxidation of carbon monooxide Nanometer metal oxide Low temperature

Catalytic performance of Pt/HY-β in n-octane hydroisomerization

在线全文

学校读者我要写书评

暂无评论

petroleum Science 2009年第3期6卷 299-305页

作者： Jin Changlei MA Bo Zhang Xiwen Ling Fengxiang Zhang Zhizhi Qin Bo College of Petrochemical Engineering Liaoning University of Petroleum and Chemical Technology Fushun Liaoning 113001 China Department of Environmental and Chemical Engineering Tangshan College Tangshan 063000 Hebei China fushun {1. institute of petroleum and petrochemicals SINOPEC Fushun Liaoning 113001 China

A bifunctional catalyst Pt/HY-β was prepared from a bimicroporous composite zeolite Y-β. Characterization results showed that the specific surface area, pore volume, and acid amount of the catalyst Pt/HY-β all decreased compared to the original zeolite. The catalytic performance of this catalyst in n-octane hydroisomerization was investigated in a fixed bed stainless steel tubular reactor. The results showed that at a hydrogen/n-octane volume ratio of 1.00, pressure of 0.6 MPa, temperature of 230 ℃ and LHSV of 3 h^-1. the conversion of n-octane, yield of liquid, hydrocracking rate and yield of iso-octane were 52.32%, 88.66%, 1..60%, 39.51., respectively.

关键词： Composite zeolite Pt/HY-β catalyst n-octane hydroisomerization

Nucleation and growth mechanism of cefodizime sodium at different solvent compositions

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2013年第4期7卷 490-495页

作者： Xinwei ZHANG Shudong ZHANG Xiaodan SUN Zequn YIN Quanjie LIU Xiwen ZHANG Qiuxiang YIN fushun {1. institute of petroleum and petrochemicals SINOPEC Fushun 113001 China School of Chemical Engineering and Technology State Key Laboratory of Chemical Engineering Tianjin University Tianjin 300072 China

The induction time of cefodizime sodium was measured in ethanol-water at different solvent composi- tions by the laser technology measurement. The results indicate that the solvent composition played an important role in the supersaturation and the nucleation process of cefodizime sodium solution. According to the modified classical nucleation theory, the nucleation and growth mechanism were identified. The correlation results show that heterogeneous nucleation dominated the nucleation process at lower supersaturation, where homogeneous nucleation is the most important mechanism at higher supersaturation. Based on the correlated results, the 2D mediated growth mechanism had the highest correlation coefficients （R2）, so this mechanism was selected as the proper growth mechanism for cefodizime sodium.

关键词： cefodizime sodium induction time primarynucleation growth mechanism

Study on Relationship between Microstructure of Active Phase and HDS Performance of Sulfided Ni-Mo Catalysts: Effect of Metal Loading

在线全文

学校读者我要写书评

暂无评论

China petroleum Processing & Petrochemical Technology 2014年第2期16卷 12-19页

作者： Guo Rong Shen Benxian Fang Xiangchen Sun Jin Peng Chong Cui Xiaoli State Key Laboratory of Chemical Engineering East China University of Science and Technology fushun {1. institute of petroleum and petrochemicals SINOPEC

Six Ni-Mo catalysts with different metal contents were prepared and characterized by N2 adsorption and X-ray diffi＇actometry. The active phase microstructure of these catalysts was examined by the Raman spectroscopy, temperature- programmed reduction （TPR）, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. Hydrodesulfurization （HDS） activity of catalyst samples were analyzed in a flow fixed-bed microreactor. The sulfidation degree of Mo and the length of the MoS2 slab slightly increased with the amount of metal loaded following sulfidation. This small change is attributed to polymolybdate species observed in all the oxidized catalysts. Weak metal-support interactions, as determined by the TPR technique, increased the NiSx sulfidation phase and MoS2 slab stacking. The HDS activity of the catalyst samples increased with the number of active sites. For high metal loading catalysts, their HDS activity was nearly identical because the sulfur atoms cannot easily approach active sites. This change is caused by the large number of stacked layers in the MoS2 slabs as well as the decrease in the specific surface area and pore volume of the catalyst samples with an increasing metal loading.

关键词： Ni-Mo catalysts hydrodesulfurization sulfidation microstructure metal loading

Structural Description of Polyaromatic Nucleus in Residue

在线全文

学校读者我要写书评

暂无评论

China petroleum Processing & Petrochemical Technology 2007年第3期9卷 35-42页

作者： Zhang Huicheng Yan Yongjie Sun Wanfu Wang Jifeng Department of Energy Chemical Engineering East China University of Science and Technology Shanghai 200237 fushun {1. institute of petroleum and petrochemicals

The proton nuclear magnetic resonance spectroscopy （1.-NMR）, the synchronous fluorescence spectrometry （SFS） and the ruthenium ions catalyzed oxidation （RICO） method were used to determine the chemical structure of polyaromatic nucleus in Oman residue fractions. The results of 1.-NMR analyses showed that the average numbers of aromatic rings in the aromatics, resins and asphaltenes units were 3.2, 5.6 and 8.2, respectively. SFS was used to investigate the distribution of aromatic rings in residue fractions, the main distribution range of aromatic rings in aromatics, resins and asphaltenes were 3 4 rings, 3--5 rings and more than 5 rings, respectively. The aromatic network in residue fractions was oxidized to produce numerous carboxylic acids. The types and content of benzenepolycarboxylic acids, such as phthalic acid, benzenetricarboxylic acids, benzenetetracarboxylic acids, benzenepentacarboxylic acid and benzenehexacarboxylic acid disclosed the condensed types of aromatic nuclei in the core. The biphenyl fraction （BIPH）, the cata-condensed fraction （CATA）, the peri-condensed fraction （PERI） and the condensed index （BCI） were calculated based on the benzenepolycarboxylic acids formed. The results implied that there was less biphenyl type structures in all residue fractions. The aromatics fraction was almost composed of the cata-condensed type system, and the asphaltenes fraction was wholly composed of the peri-condensed type system, while in the resins fraction co-existed the two types, herein the peri-con- densed type was predominant over the cata-condensed type. Based on the analytical results obtained in the study, the components --aromatics, resins and asphaltenes -- were given the likely structural models.

关键词： proton nuclear magnetic resonance spectroscopy synchronous fluorescence spectrometry ruthenium ions catalyzed oxidation residue structure

Development and Commercial Application of Methyl-ethyl-ketone Production Technology

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2006年第5期14卷 676-684页

作者：刘振华霍稳周马皓乔凯 Dalian University of Technology fushun {1. institute of petroleum & petrochemicals

A synthetic technology for the production of methyl-ethyl-ketone (MEK) is introduced, which makes use of butylene catalytic hydration to produce secondary butanol (SBA) and this is followed by dehydrogenation of SBA. By optimizing the operating conditions of a commercial unit, the running results showed that the recom-mended process was successful and that the catalysts had high activity, good selectivity, and long lifespan, which ensured long-term running in commercial units.

关键词： methyl-ethyl-ketone (MEK) secondary butanol hydration dehydrogenation resin catalyst

Zirconia modified monolithic macroporous Pt/CeO_2/Al_2O_3 catalyst used for water-gas shift reaction

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2011年第8期29卷 753-757页

作者：梁皓苑宏刚魏枫张喜文刘源 fushun {1. institute of petroleum and petrochemicals SINOPEC fushun Environmental Science Academy Tianjin Key Laboratory of Applied Catalysis Science and Engineering Department of Catalysis Science and Technology School of Chemical Engineering and Technology Tianjin University

Monolithic macroporous Pt/CeO2/Al2O3 and zirconia modified Pt/CeO2/Al2O3 catalysts were prepared by using concentrated emulsions synthesis route. The catalytic performances over the platinum-based catalysts were investigated by water-gas shift （WGS） reaction in a wide temperature range （1.0–300 oC）. The samples were characterized with thermogravimetry （TG）, X-ray diffraction （XRD）, scanning electron microscopy （SEM）, high resolution transmission electron microscopy （HRTEM） and temperature programmed reduction （TPR） techniques as well. The SEM and HRTEM results indicated that the monoliths possessed macroporosity, in size of 5–50 μm, and platinum particles were homogeneously dispersed on macroporous materials. XRD and TPR results showed that the interaction between ceria and zirconia oxide was formed and the addition of zirconia could promote the reducibility of platinum oxide on the interface of ceria and zirconia particles, which led to an improvement of catalytic activity in WGS reaction. The results indicated that zirconia modified monolithic macroporous Pt/CeO2/Al2O3 could be fabricated in small size （from millimeter lever to centimeter） and had good reaction activity, which was a potential new route for miniaturization of the WGS reactor.

关键词： macroporous monolithic water-gas shift platinum zirconia rare earths