Citation: ZHANG Peng, LIU Jian, CUI Jia, YANG Ying, HU Chang-lu, LIU Bai-jun. Preparation of Pt/CeL reforming catalyst and its performance in the aromatization of naphtha[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(3): 318-322. shu

Preparation of Pt/CeL reforming catalyst and its performance in the aromatization of naphtha

ZHANG Peng ^1,2 ,
LIU Jian ¹ ,
CUI Jia ² ,
YANG Ying ¹ ,
HU Chang-lu ² ,
LIU Bai-jun ^1,,

1.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum(Beijing), Beijing 102249, China
2.
Petrochemical Research Institute, Petro China Company Limited, Beijing 102206, China

Corresponding author: LIU Bai-jun, bjliu@cup.edu.cn
Received Date: 9 October 2018
Revised Date: 30 November 2018

Figures(2)

To solve the problems of chlorine loss and equipment corrosion caused by the conventional alumina-type reforming catalyst, zeolite L was modified with Ce³⁺ by ion exchange method and with Ce³⁺-modified L (CeL) as the support, the Pt/CeL reforming catalyst without any chlorine was prepared by impregnation method. The CeL support and Pt/CeL catalyst were characterized by XRD, N₂ adsorption-desorption, NH₃-TPD and Py-FTIR; the catalytic performance of Pt/CeL in aromatization was investigated in a continuous-flow fixed-bed micro-reactor, with an industrial hydrofining naphtha containing 0.50 μg/mL sulfur as the feedstock. The results indicate that the modification with Ce³⁺ by ion exchange has little influence on framework structure of zeolite L; however, it can raise the acid content and acid strength of the CeL support and then remarkably enhance the performance of the Pt/CeL reforming catalyst in aromatization. The activity and selectivity of the Pt/CeL catalyst are comparable to those of the commercial alumina-type reforming catalysts, suggesting that proper acidity can facilitate the aromatization reaction.
- catalytic reforming,
- cerium,
- zeolite L,
- ion exchange,
- aromatization
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