Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (7): 44-47.

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Research progress in improving the DCC performance of ZSM-5 molecular sieve

Yang Qi, Duan Hongchang, Ma Junfu, Peng Wei, Song Wenqiang, Lv Penggang, Wang Xinyu, Guo Rong   

  1. 1.Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, Lanzhou, Gansu 730000; 2.China University of Petroleum-Beijing at Karamay, Karamay, Xinjiang 834000; 3.PetroChina Qinghai Oilfield Golmud Refinery, Golmud, Qinghai 816099; 4.Xi’an Shiyou University, Xi’an, Shaanxi 710065
  • Online:2025-07-15 Published:2025-07-21

提高ZSM-5分子筛催化裂解性能研究进展

杨琦, 段宏昌, 马俊福, 彭威, 宋文强, 吕鹏刚, 王新宇, 郭蓉   

  1. 1.中国石油石油化工研究院兰州化工研究中心, 甘肃省兰州市730000; 2.中国石油大学(北京)克拉玛依校区, 新疆克拉玛依834000; 3.中国石油青海油田格尔木炼油厂, 青海省格尔木市816099; 4.西安石油大学, 陕西省西安市710065
  • 作者简介:杨琦, 硕士, 主要研究方向为催化裂化技术。
  • 基金资助:
    中国石油基础性前瞻性专项(2023ZZ36)

Abstract:

This paper reviews various methods to improve the deep catalytic cracking (DCC) performance of ZSM-5 molecular sieve, including the synthesis of nano-molecular sieve, the introduction of mesoporous or hierarchical pore structures, and the modulation of acidity. Nanoscale ZSM-5 molecular sieve contributes to the improvement of light olefin selectivity due to its small grain size and large specific surface area, the introduction of mesoporous structure improves the diffusion rate of macromolecules within the pores, and elemental doping to modulate the acidity can further optimize olefin selectivity and product distribution. In addition, the future research direction of ZSM-5 molecular sieve performance optimization is envisioned, which combines advanced simulation calculation and characterization techniques to achieve more precise catalytic regulation through an in-depth understanding of its structure-activity relationship and catalytic mechanism.

Key words: ZSM-5 molecular sieve, DCC performance, hierarchical pore structure, metallic modification, non-metallic modification, acidic sites, aluminum distribution modulation

摘要:

综述了提高ZSM-5分子筛催化裂解性能的多种方法,包括合成纳米级分子筛、引入介孔或多级孔结构以及调节酸性等。纳米级ZSM-5分子筛因其小晶粒和大比表面积,有助于提高轻质烯烃选择性;引入介孔结构改善了大分子在孔道内的扩散速率;引入金属或非金属元素调节酸性,能够进一步优化烯烃选择性和产品分布。此外,展望了未来ZSM-5分子筛性能优化的研究方向,结合先进的模拟计算与表征技术,通过深入理解其构效关系和催化机理,实现更精准的催化裂解性能调控。

关键词: ZSM-5分子筛, 催化裂解性能, 多级孔结构, 金属改性, 非金属改性, 酸性位点, 铝落位调控