Citation: YANG Na, WANG Hai-feng, LIU Yun-qi, LIU Chen-guang. Study on the transformation rule of n-tetradecane hydroisomerization over modified Pt/SAPO-11 catalyst[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(2): 211-218. shu

Study on the transformation rule of n-tetradecane hydroisomerization over modified Pt/SAPO-11 catalyst

1.
Changzheng Engineering Co., LTD Lanzhou Branch, Lanzhou 730010, China
2.
Jinan Branch, China Petroleum & Chemical Corporation, Jinan 250101, China
3.
State Key Laboratory of Heavy Oil Processing in China University of Petroleum(East China), Key Laboratory of Catalysis CNPC, Qingdao 266580, China

Corresponding author: LIU Yun-qi, Liuyq@upc.edu.cn
Received Date: 9 August 2017
Revised Date: 17 October 2017

Fund Project: the National Natural Science Foundation of China 21676300The project was supported by the National Natural Science Foundation of China (21676300)

Figures(5)

Pt/SAPO-11 bifunctional catalyst was modified with citric acid and carbon black.The effects of different modified methods on the catalytic activity of Pt/SAPO-11 catalysts were investigated using n-tetradecane as the probe reaction.Results indicated that the isomerization products were mainly composed of monomethyl isomer, the modification has not changed the acid strength of the catalyst, but the acid concentration has decreased.The citric acid significantly improved the low temperature catalytic activity of the catalysts, while carbon black effectively promoted the mass transfer performance and monomethyl isomer selectivity of the catalysts.The cracking products were mainly composed of C₆ compounds, and modification did not change the shape selective effects of SAPO-11 molecular sieve.Carbon number distribution of cracking products was obvious asymmetric distribution.
- hydrotransformation,
- modification,
- mass transfer effect,
- acidity
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