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Petroleum Science >2013,??Issue 2:??242-250 DOI: https://doi.org/10.1007/s12182-013-0273-6

Hydroisomerization performance of platinum supported on ZSM-22/ZSM-23 intergrowth zeolite catalyst Open?Access

文章信息

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作者：Chi Kebin,Zhao Zhen,Tian Zhijian,Hu Sheng,Yan Lijun,Li Tianshu,Wang Bingchun,Meng Xiangbin,Gao Shanbin,Tan Mingwei and Liu Yanfeng
作者單位：

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China; Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China;State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China;Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China;Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China;State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China;Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China;Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China;Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China;Petrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China

投稿時間：2012-08-26
引用方式：Chi, K., Zhao, Z., Tian, Z. et al. Pet. Sci. (2013) 10: 242. https://doi.org/10.1007/s12182-013-0273-6

文章摘要

Hydroisomerization catalysts Pt/ZSM-22, Pt/ZSM-23, and Pt/ZSM-22/ZSM-23 were prepared by supporting Pt on ZSM-22, ZSM-23, and intergrowth zeolite ZSM-22/ZSM-23, respectively. The typical physicochemical properties of these catalysts were characterized by X-Ray Diffraction (XRD), N2 absorption-desorption, Pyridine-Fourier Transform Infrared (Py-FTIR), Transmission Electron Microscopy (TEM), X-Ray Fluorescence (XRF), Scanning Electron Microscopy (SEM) and NH3-Temperature Programmed Desorption (NH3-TPD), and the performance of these catalysts in n-dodecane hydroisomerization was evaluated in a continuous down-flow fixed bed with a stainless steel tubular reactor. The characterization results indicated that the intergrowth zeolite ZSM-22/ZSM-23 possessed the dual structure of ZSM-22 and ZSM-23, and the catalyst Pt/ZSM-22/ZSM-23 had similar pores and weak acidity to Pt/ZSM-22 and Pt/ZSM-23 catalysts. Moreover, Pt/ZSM-22/ZSM-23 catalyst showed a high selectivity in hydroisomerization of long chain n-alkanes to mono-branched isomers. The evaluation results for n-dodecane hydroisomerization indicated that the activity of Pt/ZSM-22/ZSM-23 was the lowest, while the hydroisomerization selectivity was the highest among the three catalysts. The maximum yield of i-dodecane product was 68.3% over Pt/ZSM-22/ZSM-23 at 320 oC.

關鍵詞

    ZSM-22/ZSM-23 intergrowth zeolite, platinum catalyst, n-dodecane, hydroisomerization
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