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题名: Preparation of Pd/WO3-ZrO2 solid superacid catalyst and its catalytic performance for N-heptane hydroisomerization
作者: Xu, P;  Xu, YP;  Teng, F;  Hu, S;  Tan, MW;  Xu, ZS;  Tian, ZJ
关键词: palladium ;  tungsten oxide ;  titania ;  supported catalyst ;  heptane ;  hydroisomerization
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2005-09-01
卷: 26, 期:9, 页:750-754
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The WO3-ZrO2 support was synthesized by the coprecipitation method, and the Pd/WO3-ZrO2 solid superacid catalyst was prepared by impregnation. The physicochemical properties of the support and the catalyst were characterized by means of N-2 adsorption, XRD, NH3-TPD and H-2-adsorption. The structure, acid density and activity of the Pd/WO3-ZrO2 catalyst varied with the W content. The catalytic performance of Pd/WO3-ZrO2 for hydroisomerization of n-heptane was investigated under the reaction conditions of n (H-2) /n (n-C7H16 ) = 28, WHSV = 0. 75 h(-1), V(cat) = 0. 5 ml, p = 100 kPa and theta = 150 similar to 410 degrees C. The Pd/WO3-ZrO2 catalyst sample with w (W) = 13.2 % similar to 15.8 % exhibited better performance (X(n-C7H16) = 70.4 %, S (i-C7H16) = 81 . 0 %) at 230 degrees C. The W content, Pd loading and calcination temperature were essential to obtain the catalyst with high catalytic activity.
关键词[WOS]: SKELETAL ISOMERIZATION ;  MONOLAYER DISPERSION ;  TUNGSTEN-OXIDE ;  SULFATE ION ;  ZIRCONIA ;  ISOBUTANE ;  ACID ;  WO3
语种: 英语
WOS记录号: WOS:000232474800007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139905
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Nat Gas Utilizat & Appl Catalysis, Dalian 116023, Peoples R China
2.Daqing Petrochem Co, Res Inst, Heilongjiang 163714, Peoples R China

Recommended Citation:
Xu, P,Xu, YP,Teng, F,et al. Preparation of Pd/WO3-ZrO2 solid superacid catalyst and its catalytic performance for N-heptane hydroisomerization[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(9):750-754.
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