催化学报 ›› 2026, Vol. 84: 25-60.DOI: 10.1016/S1872-2067(26)65006-1

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甲烷的脱氢芳构化及其与丙烷共芳构化: 反应机理、催化剂设计、积碳和过程强化

顾宇a(), 张淑嘉a, 徐铭潞a, 闫昊b, 周铭昊a, 王磊a(), 施慧a   

  1. a 扬州大学化学化工学院, 江苏扬州 225009
    b 中国石油大学(华东)化学化工学院, 山东青岛 266580
  • 收稿日期:2025-09-24 接受日期:2025-11-16 出版日期:2026-05-18 发布日期:2026-04-16
  • 通讯作者: *电子信箱: guyu@yzu.edu.cn (顾宇),
    leiwang88@yzu.edu.cn (王磊).
  • 基金资助:
    国家自然科学基金(22308301);国家自然科学基金(22072128);国家自然科学基金(22301267)

Dehydroaromatization of methane and methane co-aromatization process with propane: Reaction mechanism, catalyst design, carbon deposition and process optimization

Yu Gua(), Shujia Zhanga, Minglu Xua, Hao Yanb, Minghao Zhoua, Lei Wanga(), Hui Shia   

  1. a School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, China
    b College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China
  • Received:2025-09-24 Accepted:2025-11-16 Online:2026-05-18 Published:2026-04-16
  • Contact: *E-mail: guyu@yzu.edu.cn (Y. Gu),
    leiwang88@yzu.edu.cn (L. Wang).
  • About author:Yu Gu (College of Chemistry and Chemical Engineering, Yangzhou University) Yu Gu received his B.S. in Applied Chemistry from China University of Petroleum (East China) in 2015, and Ph. D. in Chemical Engineering & Technology from China University of Petroleum (East China) in 2021. He is currently an associated professor at Yangzhou University, Jiangsu province, China. He focuses on the catalytic conversion of light alkanes such as methane dehydroaromatization, its co-aromatization with propane/butane, propane dehydrogenation & aromatization, etc.; and catalytic upgrading of polyolefin plastics. His research approach combines synthesis, characterizations and mechanism investigation over metal catalysts supported on zeolites, alumina, silica and ceria, etc.
    Lei Wang (College of Chemistry and Chemical Engineering, Yangzhou University) Lei Wang received his Ph.D. degree under Prof. Hai-Wei Liang at the University of Science and Technology of China in 2020. Then, he joined the Southern University of Science and Technology as a postdoctoral fellow. Now, he is an Associate Professor at Yangzhou University. His main research interests include the precise synthesis of nanocrystals and the interface of heterogeneous catalysts for catalyzing hydrogenation/dehydrogenation reactions.
  • Supported by:
    National Natural Science Foundation of China(22308301);National Natural Science Foundation of China(22072128);National Natural Science Foundation of China(22301267)

摘要:

作为一种化石能源, 天然气单位热量高、环境污染小、价格相对低廉, 被广泛认为是替代石油的理想选择. 天然气的主要成分为甲烷(其余含少量乙烷、丙烷等高碳数烷烃、氮气及硫化氢等杂质), 是地球上最丰富的烃类资源之一, 地壳储量相当可观. 甲烷作为燃料直接燃烧虽然方便了人们的日常生产生活, 但并没有充分发挥其潜在的化学价值, 附加值相对较低. 如何低成本、高效率地将甲烷催化转化为更具价值的化学品, 成为了科研领域和工业界共同关注的焦点. 甲烷经过脱氢及芳构化反应可转化为苯、甲苯、二甲苯及萘等芳烃, 既能高效利用天然气资源, 也是对传统石油和煤制芳烃路线的有力补充, 在“碳达峰、碳中和”的大背景下具有较大的研究及现实意义.

本文系统总结了甲烷的脱氢芳构化反应, 以及甲烷与以丙烷为代表的高碳烷烃的共芳构化反应的研究进展. 首先从甲烷脱氢芳构化反应入手, 围绕该过程的(1)反应热力学、(2)反应中间体及机理(乙烯、乙烷、乙炔、烃池等)、(3)催化剂脱氢金属组分的选择依据及典型的金属组分(钼、铁)、(4)反应诱导期及脱氢位点的演变、(5)催化剂载体的选择及酸位点的功能、(6)积碳的性质及形成原因、(7)催化剂设计思路(介孔结构、中空结构的构建, 晶粒尺寸、酸位点调节等)及(8)过程强化(共进料、加压、膜反应器、化学循环、反应路径改变、反应器设计及催化剂再生循环等)以提升催化剂抗积碳能力等多个方面进行了阐述, 为读者全面理解该反应提供参考. 以此为基础, 本文还探讨了甲烷与丙烷等高级烃的共芳构化反应, 围绕丙烷芳构化及甲烷-丙烷共芳构化过程的(1)反应热力学、(2)典型催化剂脱氢组分(锌、镓)、(3)反应机理等方面进行了较为系统的介绍, 并全面对比了甲烷单独芳构化、丙烷单独芳构化及共芳构化三个不同过程的异同点, 旨在拓展读者对甲烷芳构化反应的认知边界, 进而为深入理解类似实际天然气组成的原料芳构化过程提供思路. 最后, 本文总结了甲烷芳构化技术的研究现状, 并对未来的研究方向进行展望.

基于以上的总结, 本文认为今后该领域的研究者应重点关注反应条件优化、过程强化、反应路径创新、催化剂理性设计、反应路径机理研究等方面. 希望本文能够为读者系统而全面地理解甲烷脱氢芳构化及其与高碳烃的共芳构化过程提供一些借鉴, 也为致力于推动天然气制烯烃、芳烃技术产业化的潜在从业者们提供一些现实的思路.

关键词: 甲烷脱氢芳构化, 甲烷-丙烷共芳构化, 催化剂设计, 反应机理, 积碳, 过程强化

Abstract:

Natural gas, as a fossil energy source, possesses abundant reserves in nature. It is cleaner and more environmentally benign compared to coal and crude oil. Converting natural gas via catalytic routes into more valuable chemicals, such as benzene and methanol, can both reduce the transportation costs of natural gas and increase the supply of commodity chemicals. It also serves as a significant supplement to the current petrochemical industry, holding broad application prospects. The aromatization reaction of methane is a critical technique in the methane conversion pathway, in which aromatics like benzene, toluene, and naphthalene can be produced via high-temperature dehydrogenation. Such a process has drawn significant research attention over the past three decades. This paper attempts to provide a detailed introduction to the development of research on this reaction. By examining various aspects including reaction thermodynamics, catalyst composition, reaction intermediates/mechanism, coke properties, anti-coking measures and process intensification, it aims to offer readers a comprehensive understanding of this reaction. Additionally, by discussing the co-aromatization of methane with higher hydrocarbons like propane, it tries to expand the cognitive boundaries related to methane aromatization reactions, thereby tending to offer deeper insights into the aromatization process of feedstock with compositions similar to real natural gas. In the end, the current research status in the field of methane aromatization is summarized, and future research directions are outlined as well.

Key words: Methane dehydroaromatization, Methane propane co-aromatization, Catalyst design, Reaction mechanism, Coke, Process optimization