Citation: ZHAN Jin-you, ZHANG Lu-lu, SUN Yao, SHEN Jian. Modified ZSM-5-SBA-15 and its alkylation performance for toluene with methanol[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(4): 489-494. shu

Modified ZSM-5-SBA-15 and its alkylation performance for toluene with methanol

College of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China

Corresponding author: SHEN Jian, lnshenjian@126.com
Received Date: 13 October 2015
Revised Date: 18 January 2016

Figures(7)

ZSM-5 was modified by metal M (M for Mg, Ni or Sr) using impregnation method first, then the micro-mesoporous composite molecular sieve of M-ZSM-5-SBA-15 was synthesized by post synthesis. The samples were characterized by means of XRD, N₂ adsorption-desorption, FT-IR, NH₃-TPD and Py-FTIR. The influence of silica alumina ratio of the HZSM-5 and different metals modification on alkylation performance were investigated. The results showed that the ZSM-5/SBA-15 composite molecular sieve with silica alumina ratio of 80 showed the best performance in alkylation. The introduction of Sr passivated strong Brnsted acid centers and reduced the ratio of Brnsted acid and Lewis acid of ZSM-5-SBA-15(80), resulting in good performance in alkylation with a toluene conversion of 30.15% and a p-xylene selectivity of 77.41%.
- ZSM-5-SBA-15,
- metal modified,
- alkylation,
- p-xylene
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