Bi2O3 modification of HZSM-5 for methanol-to-propylene conversion: evidence of olefin-based cycle. Issue 27 (15th March 2017)

• Record Type: Journal Article
• Authors: Zhang, Hairong; Ning, Zhangxuan; Liu, Hongyan; Shang, Jianpeng; Han, Shenghua; Jiang, Dingding; Jiang, Yu; Guo, Yong
• Is Part Of: RSC advances. Volume 7:Issue 27(2017)
• Page Start: 16602
• Page End: 16607
• Publication Date: 2017-03-15
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra27849c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Bi2 O3 -modified HZSM-5 catalysts were prepared via a traditional wetness impregnation approach, and used for the methanol-to-propylene conversion reaction. Abstract : Bi2 O3 -modified HZSM-5 catalysts were prepared via a traditional wetness impregnation approach, and used for the methanol-to-propylene conversion reaction. The selectivity for propylene increases significantly with bismuth loading, while that for ethylene shows the opposite trend. However, the Bi2 O3 /HZSM-5 catalysts have significantly lower capacities for methanol conversion than the parent HZSM-5. The underlying causes are the reduced acid site strength, narrower pore openings, and reduced pore width in Bi2 O3 /HZSM-5. This work provides insights into the olefin-based cycle operation for methanol-to-olefin reactions using modified HZSM-5 catalysts.