Chemical Industry and Engineering Progress ›› 2023, Vol. 42 ›› Issue (4): 1869-1876.DOI: 10.16085/j.issn.1000-6613.2022-1022

• Industrial catalysis • Previous Articles     Next Articles

Recent progress of Co-based catalysts for higher alcohols synthesis form syngas

TIAN Yuan1,2(), LOU Shujie1(), MENG Shanru1, YAN Jingru1,2, XIAO Haicheng1   

  1. 1.Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
    2.School of Chemical Engineering and Environment, China University of Petroleum, Beijing 102249, China
  • Received:2022-05-31 Revised:2022-09-17 Online:2023-05-08 Published:2023-04-25
  • Contact: LOU Shujie

合成气制高碳醇钴基催化剂研究进展

田园1,2(), 娄舒洁1(), 孟闪茹1, 闫敬如1,2, 肖海成1   

  1. 1.中国石油天然气股份有限公司石油化工研究院,北京 102206
    2.中国石油大学(北京)化学工程与环境学院,北京 102249
  • 通讯作者: 娄舒洁
  • 作者简介:田园(1997—),男,硕士研究生,研究方向为碳一化工。E-mail:tianyuan9709@163.com
  • 基金资助:
    国家自然科学基金(2017YFA0700100);中国石油科学研究与技术开发项目(2019A-2409-02)

Abstract:

Linear alcohols with six carbon atoms or more are used extensively in industry. Syngas to higher alcohols is a short route suitable for a wide variety of carbon resources. Cobalt-based catalysts have the Co0 active phase to dissociate CO and promote the carbon-chain growth, and Cu and Co2C active phase are introduced to promote the CO no-dissociative activation and enhance the selectivity towards alcohols. This article summarized the recent progress on Co-catalyzed syngas to higher alcohols, and found the highly dispersed active phases under reaction conditions was the key of high C6+OH selectivity. Dispersion of active phase could be improved by pretreatment on the catalyst surface, or via the structure of hydrotalcite or perovskite. Supports and promoters would influence the surface metal segregation and the formation of CoC x, thus affected the catalytic performance. To improve the selectivity towards higher alcohols and prolong catalyst life, further studies were needed on accurate characterization of catalyst surface state, controllable synthesis technology, dynamic evolution of the catalyst structure and reaction network under the reaction atmosphere.

Key words: syngas, higher alcohols, modified Fischer-Tropsch synthesis, Co-based catalyst

摘要:

6个碳原子以上的高碳醇,在工业领域有着广泛的应用。合成气制备高碳醇原料来源广泛、技术路线短。钴基催化剂利用Co0相解离CO、促进碳链增长的能力,引入Cu和Co2C相促进CO的非解离活化以调控醇类的选择性。本文综述了近年来钴基合成气制备高碳醇催化剂的研究进展,指出活性相在反应条件下的均匀分散是高选择性生成C6+OH的关键,可以通过对催化剂表面预处理或利用水滑石、钙钛矿等结构促进分散。载体和助剂通过影响表面金属的偏析或者CoCx相的生成来影响反应性能。文中指出:需要开发表面态的精确表征与可控合成技术,研究催化剂结构、反应网络在反应气氛下的动态变化,提升高碳醇的选择性与催化剂寿命。

关键词: 合成气, 高碳醇, 改性费托, Co基催化剂

CLC Number: 

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