摘要：To reveal the effects of Bronsted acid site concentrations on product distribution and reaction pathways of pentene cracking, ZSM-5 zeolites with similar pore structures and different acid concentrations were prepared and evaluated using C-5 distillate of FCC gasoline as feed. Three indexes related to reaction pathways (M/B, P/O, and A/O) were defined. A high strong Bronsted acid sites (SBAS) concentration favored the increase in the M/B index to promote monomolecular cracking pathways. However, the P/O index and the A/O index also increased, resulting from the enhancement of the hydrogen transfer reaction and aromatization. Therefore, an intermediate concentration of SBAS was advantageous to produce more ethylene and propylene. The optimum concentration range of SBAS was 4.4-6.7 mu mol.g(-1) for the maximum total yield of ethylene and propylene (74.7 wt %). The indexes (M/B, P/O, and A/O) provided a new thought to optimize the design of catalysts for intensifying ethylene and propylene by controlling the olefin cracking reaction pathways.

ISSN号：0888-5885

卷、期、页：卷: 60期: 48页: 17469-17479

发表日期：2021-12-08

影响因子：3.572700

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

通讯作者：孙海玲,张彬瑞,魏晨浩

第一作者：曹丽媛,张宇豪,赵亮,高金森,徐春明

论文类型：期刊论文

论文概要：孙海玲,张彬瑞,魏晨浩,曹丽媛,张宇豪,赵亮,高金森,徐春明，Intensifying Ethylene and Propylene of Pentene Cracking of FCC Gasoline by Modulating the Bronsted Acid Site Concentrations，INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH，2021，卷: 60期: 48页: 17469-17479

论文题目：Intensifying Ethylene and Propylene of Pentene Cracking of FCC Gasoline by Modulating the Bronsted Acid Site Concentrations