Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 9, Issue 9, Pages 2203-2210Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cy00335e
Keywords
-
Categories
Funding
- National Natural Science Foundation for Young Scholars of China [21406270]
Ask authors/readers for more resources
A series of Zn-modified SAPO-34 zeolites were prepared by the impregnation method and the effect of Zn modification on the catalytic performance of SAPO-34 zeolite in the methanol-to-olefin (MTO) reaction was comprehensively investigated. The physicochemical properties of the parent and Zn-modified SAPO-34 zeolites were characterized by XRD, SEM, N-2 adsorption-desorption, NH3-TPD, H-2-TPR, FTIR, UV-vis DRS and TGA. The reaction results show that the ethene selectivity and ethene to propene ratio are significantly improved over Zn-modified SAPO-34 zeolites in the initial period of the MTO reaction, and the optimum catalytic performance is obtained over 2.0Zn/SAPO-34 zeolite with a methanol conversion of 99.1 wt%, an ethene selectivity of 54.6 C-%, a light olefin selectivity of 88.9 C-% and an ethene to propene ratio of 1.9. Based on the characterization and reaction results, the enhanced ethene selectivity and ethene to propene ratio over Zn-modified SAPO-34 zeolites are attributed to the increased diffusion hindrance originating from the incorporated Zn-related species enrichment and the facilitated formation of aromatics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available