In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (1): 158-166.

In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process

刘海燕, 曹丽媛, 魏宝莹, 范煜, 石冈, 鲍晓军

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

收稿日期:2011-06-09 修回日期:2011-11-11 出版日期:2012-02-28 发布日期:2012-05-03
通讯作者: BAO Xaojun,baoxj@cup.edu.cn
基金资助:
Supported by the Ministry of Science and Technology of China Through the National Basic Research Program (2010CB226905);the National Natural Science Foundation of China for the Youth (20706059)

In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process

LIU Haiyan, CAO Liyuan, WEI Baoying, FAN Yu, SHI Gang, BAO Xaojun

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

Received:2011-06-09 Revised:2011-11-11 Online:2012-02-28 Published:2012-05-03
Supported by:
Supported by the Ministry of Science and Technology of China Through the National Basic Research Program (2010CB226905);the National Natural Science Foundation of China for the Youth (20706059)

摘要/Abstract

摘要： Using rectorite extrudates from calcined rectorite powder as the starting material,a series of ZSM-5/rectorite composites were prepared via the in-situ crystallization method.The physicochemical properties and propylene boosting performance of the resulting samples were characterized by using X-ray diffraction,scan-ning electronic microscopy/energy dispersive spectrometer,N₂ adsorption-desorption,and Fourier transformed in-frared spectroscopy of pyridine adsorption,respectively,and assessed by using Daqing atmospheric residue as feed-stock.The results showed that the ZSM-5/rectorite composites in which the ZSM-5 phase grows in-situ as a 2-3 μm thick layer on rectorite particles have a trimodal microporous-mesoporous-macroporous structure and thus exhibit outstanding propylene boosting performance.Compared with a commercial ZSM-5 incorporated fluid catalytic cracking catalyst,the ZSM-5/rectorite composite incorporated catalyst increased the yield and selectivity of pro-pylene by 2.44% and 5.35%,respectively.

关键词: ZSM-5/rectorite composite, in-situ crystallization, propylene boosting additive, fluid catalytic cracking

Abstract: Using rectorite extrudates from calcined rectorite powder as the starting material,a series of ZSM-5/rectorite composites were prepared via the in-situ crystallization method.The physicochemical properties and propylene boosting performance of the resulting samples were characterized by using X-ray diffraction,scan-ning electronic microscopy/energy dispersive spectrometer,N₂ adsorption-desorption,and Fourier transformed in-frared spectroscopy of pyridine adsorption,respectively,and assessed by using Daqing atmospheric residue as feed-stock.The results showed that the ZSM-5/rectorite composites in which the ZSM-5 phase grows in-situ as a 2-3 μm thick layer on rectorite particles have a trimodal microporous-mesoporous-macroporous structure and thus exhibit outstanding propylene boosting performance.Compared with a commercial ZSM-5 incorporated fluid catalytic cracking catalyst,the ZSM-5/rectorite composite incorporated catalyst increased the yield and selectivity of pro-pylene by 2.44% and 5.35%,respectively.

Key words: ZSM-5/rectorite composite, in-situ crystallization, propylene boosting additive, fluid catalytic cracking

中图分类号:

TE624.94

刘海燕, 曹丽媛, 魏宝莹, 范煜, 石冈, 鲍晓军. In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process[J]. Chinese Journal of Chemical Engineering, 2012, 20(1): 158-166.

LIU Haiyan, CAO Liyuan, WEI Baoying, FAN Yu, SHI Gang, BAO Xaojun. In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process[J]. Chin.J.Chem.Eng., 2012, 20(1): 158-166.

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In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process

In-situ Synthesis and Catalytic Properties of ZSM-5/Rectorite Composites as Propylene Boosting Additive in Fluid Catalytic Cracking Process

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