Cascade hydrogenation of n-C16 to produce jet fuel over tandem catalysts of modified ZSM-22
- Resource Type
- Article
- Authors
- Yi Li; Junhao Sun; Jie Wei; Chao Mu; Yujun Zhao; Shengping Wang; Xinbin Ma
- Source
- Journal of Industrial and Engineering Chemistry, 111(0), pp.88-97 Jul, 2022
- Subject
- 화학공학
- Language
- English
- ISSN
- 1876-794X
1226-086X
ZSM-22 with one-dimensional straight channels and suitable acid properties is widely applied in theselective hydrocracking of long-chain alkanes to produce middle distillate. In this work, the tandem catalystswith two kinds of modified ZSM-22 were employed in series to optimize the distribution of theproduct in the hydrotreatment of n-C16 to produce jet fuel. The yield of linear alkanes with high carbonnumbers was enhanced over the upstream catalyst bed of Pt/L-HZSM-22 with shielded external acid siteswhile the isomerization with less further cracking occurred over the downstream catalyst bed of Pt/Me-HZSM-22 with introduced mesopores. The tandem catalysts can combine the ability of Pt/L-HZSM-22 toproduce heavy n-alkanes and the stronger isomerization performance of Pt/Me-HZSM-22. The highestyield of jet fuel (23 wt.%) can be obtained over the tandem catalysts instead of any individual catalyst. The strategy of the tandem zeolite has been initially verified and proposed to broaden the investigationperspectives of the oil refinery.