Methanol to propylene: the effect of iridium and iron incorporation on the HZSM-5 catalyst

2012年第6卷第3期

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《化学科学与工程前沿（英文）》 >> 2012年第6卷第3期 doi: 10.1007/s11705-012-0902-4

Methanol to propylene: the effect of iridium and iron incorporation on the HZSM-5 catalyst

1. National Petrochemical Company, Petrochemical Research & Technology Company (NPC-RT), Tehran 14358-84711, Iran; 2. Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran 11365-9465, Iran; 3. Department of Chemical Engineering, Amirkabir University of Technology, Tehran 15914, Iran

发布日期： 2012-09-05

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摘要

The effect of iridium and iron impregnation of HZSM-5 zeolite on the methanol to propylene reaction (MTP) was investigated. The selectivities of propylene and other hydrocarbons, and the conversion of methanol were compared by performing MTP in a small pilot plant. The results indicate that HZSM-5 zeolite modified by iron and iridium increased propylene selectivity by 6.3% and 8%, respectively. The selectivity of propylene was higher for Ir/H-ZSM-5 than for Fe/H-ZSM-5, where Fe/H-ZSM-5 was more stable than Ir/H-ZSM-5. Analytic techniques, including X-ray diffraction, BET surface area, temperature-programmed desorption of ammonia, and inductively coupled plasma atomic emission spectroscopy, were used to characterize the modified zeolites as well as the parent zeolites.

关键词

HZSM-5 ; promoter ; iridium ; iron ; MTP