Chemical Industry and Engineering Progress ›› 2025, Vol. 44 ›› Issue (7): 3907-3916.DOI: 10.16085/j.issn.1000-6613.2024-0732

• Industrial catalysis • Previous Articles    

Research progress of catalysts for gas-phase dehydrofluorination to synthesize C2 hydrofluoroolefins

LU Peng1,2(), ZHANG Di1,2(), LIU Yaoyao1,2, YU Wanjin1,2, LIU Wucan1,2, ZHANG Jianjun1,2   

  1. 1.Zhejiang Research Institute of Chemical Industry, Hangzhou 310023, Zhejiang, China
    2.State Key Laboratory of Fluorinated Greenhouse Gases Replacement and Control Treatment, Hangzhou 310023, Zhejiang, China
  • Received:2024-05-06 Revised:2024-08-16 Online:2025-08-04 Published:2025-07-25
  • Contact: ZHANG Di

气相脱氟化氢合成C2氢氟烯烃催化剂的研究进展

卢朋1,2(), 张迪1,2(), 刘瑶瑶1,2, 于万金1,2, 刘武灿1,2, 张建君1,2   

  1. 1.浙江省化工研究院有限公司,浙江 杭州 310023
    2.含氟温室气体替代及控制处理国家重点实验室,浙江 杭州 310023
  • 通讯作者: 张迪
  • 作者简介:卢朋(1989—),男,硕士,工程师,研究方向为工业催化技术与氟碳化学品。E-mail:lupeng@sinochem.com
  • 基金资助:
    浙江省“高层次人才特殊支持计划”(2022R52003)

Abstract:

The gas-phase catalytic dehydrofluorination to synthesize C2 fluoroalkenes is an economically efficient process that enables continuous large scale production. The key lies in the development of highly efficient and stable dehydrofluorination catalysts. The research progress of gas-phase dehydrofluorination catalysts for C2 hydrofluoroolefin synthesis has been summarized. Firstly, this review introduces the E1 and E2 mechanisms of gas-phase dehydrofluorination reaction, followed by a discussion on the impacts of acidity, fluoride ion affinity, and synergy of multi-active sites on the catalyst activity and stability. Then, the applications of dehydrofluorination catalysts in the synthesis of important C2 hydrofluoroolefins such as vinyl fluoride, vinylidene fluoride, 1,2-difluoroethylene, and trifluoroethylene have been summarized. Although research suggests that catalysts with appropriate Lewis acid site strength and multiple active sites can significantly enhance reaction efficiency and catalyst lifetime, challenges remain in overcoming issues such as high-temperature sintering and carbon deposition. Future efforts should focus on optimizing catalyst design under process conditions and improving catalyst regeneration capabilities, which thereby promote the sustainable production of fluorinated compounds.

Key words: catalyst, hydrofluoroolefins, alkane, dehydrofluorination, activity, stability

摘要:

气相催化脱氟化氢合成C2氢氟烯烃是一种经济高效、可实现连续化放大生产的工艺路线,其核心技术是开发高效稳定脱氟化氢催化剂。本文总结了国内外C2氢氟烯烃合成用气相脱氟化氢催化剂的研究进展。首先,介绍了气相脱氟化氢反应的E1机制和E2机制,在此基础上探讨了酸性、氟离子亲和力以及多活性位点协同对催化剂活性与稳定性的影响。接着,归纳了脱氟化氢催化剂在氟乙烯、偏氟乙烯、1,2-二氟乙烯、三氟乙烯等重要C2氢氟烯烃合成中的应用情况。虽然已有研究表明,开发Lewis酸位点强度适宜且具有多活性位点的催化剂可以显著提升脱氟化氢反应效率和催化剂寿命,但仍需克服高温烧结和积炭等挑战。未来需结合工艺条件优化催化剂设计,提高催化剂再生能力,推动含氟化合物的可持续生产。

关键词: 催化剂, 氢氟烯烃, 烷烃, 脱氟化氢, 活性, 稳定性

CLC Number: 

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