化工进展 ›› 2024, Vol. 43 ›› Issue (S1): 517-532.DOI: 10.16085/j.issn.1000-6613.2023-2158

• 资源与环境化工 • 上一篇    下一篇

HZSM-5分子筛催化木质素热解制芳烃研究进展

万震1,2(), 王绍庆2, 李志合2(), 赵天生1()   

  1. 1.宁夏大学化学化工学院省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏 银川 750021
    2.山东理工 大学农业工程与食品科学学院,山东省清洁能源工程技术研究中心,山东 淄博 255000
  • 收稿日期:2023-12-06 修回日期:2024-07-23 出版日期:2024-11-20 发布日期:2024-12-06
  • 通讯作者: 李志合,赵天生
  • 作者简介:万震(1997—),男,博士研究生,研究方向为应用催化。E-mail:wanzhen202108@163.com
  • 基金资助:
    国家自然科学基金(52176192)

Advances in HZSM-5 catalyzed pyrolysis of lignin to aromatic hydrocarbons

WAN Zhen1,2(), WANG Shaoqing2, LI Zhihe2(), ZHAO Tiansheng1()   

  1. 1.State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry & Chemical Engineering, Ningxia University, Yinchuan 750021, Ningxia, China
    2.Shandong Research Center of Engineering and Technology for Clean Energy, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China
  • Received:2023-12-06 Revised:2024-07-23 Online:2024-11-20 Published:2024-12-06
  • Contact: LI Zhihe, ZHAO Tiansheng

摘要:

芳烃是重要的有机化工产品原料,也是汽油的重要混合组分,传统获取途径来自石油路线。石油的持续消耗与日渐枯竭迫使人们从可再生生物质资源路线获取芳烃。生物质中的木质素具有丰富的芳香结构组成,是生产芳烃的潜在原料。HZSM-5分子筛催化木质素热解转化制芳烃受到关注,然而存在产物选择性差、催化剂易积炭失活等问题。本文分析了HZSM-5理化特性、反应条件对芳烃产物分布影响;综述了金属改性、脱硅改性、复合介孔催化剂、辅助催化等改性方式,通过调变催化剂的酸性、孔道、传质扩散等提高生物油产物中单环芳烃的分布以及催化剂的稳定性。提出了该催化热解转化过程研究的未来方向,如根据目标芳烃产物选择HZSM-5改性策略、深入揭示其催化作用和积炭机理等。

关键词: HZSM-5, 改性, 辅助催化, 木质素, 热解, 芳烃

Abstract:

Aromatic hydrocarbons (AHCs) are important raw materials of organic chemicals and blending components of gasoline, which are traditionally derived from petroleum route. Obtaining AHCs from renewable biomass resources is demanded due to the growing consumption of petroleum. Lignin, one of the components of biomass with rich aromatics, is a potential raw material for the production of AHCs. Efficient transformation of lignin to AHCs by catalyzed pyrolysis over HZSM-5 molecular sieve has attracted increasing attention, although this process faces low selectivity of target products, easy coke deposition on HZSM-5, and so on. The influences of HZSM-5 physicochemical properties and reaction conditions on the distribution of aromatic products were analyzed. Regulating the acidity, porosity, and mass transfer/diffusion of the catalysts, by metal addition, desilication, combining mesoporous catalysts, and assisted catalysis, enhanced the distribution of mono-aromatic hydrocarbons in bio-oils and the catalytic stability. Future development directions for this catalytic pyrolysis transformation were proposed including rational selection of the HZSM-5 modification strategy according to the target aromatic products, in-depth understanding of the catalysis and the carbon-accumulation mechanism.

Key words: HZSM-5, modification, assisted catalysis, lignin, pyrolysis, aromatic hydrocarbons

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