应用化学 ›› 2023, Vol. 40 ›› Issue (6): 789-805.DOI: 10.19894/j.issn.1000-0518.220414

• 综合评述 • 上一篇    下一篇

本体金属氧化物在丙烷无氧脱氢中的研究进展

于宜辰, 张雨宸, 张耀远(), 吴芹, 史大昕, 陈康成, 黎汉生()   

  1. 北京理工大学化学与化工学院,北京 100081
  • 收稿日期:2022-12-29 接受日期:2023-05-22 出版日期:2023-06-01 发布日期:2023-06-27
  • 通讯作者: 张耀远,黎汉生
  • 基金资助:
    国家自然科学基金(22108013);中国石油科技创新基金(2020D-5007-0402);北京理工大学青年教师学术启动计划资助

Research Progress of Bulk Metal Oxides for Non-oxidative Propane Dehydrogenation

Yi-Chen YU, Yu-Chen ZHANG, Yao-Yuan ZHANG(), Qin WU, Da-Xin SHI, Kang-Cheng CHEN, Han-Sheng LI()   

  1. School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China
  • Received:2022-12-29 Accepted:2023-05-22 Published:2023-06-01 Online:2023-06-27
  • Contact: Yao-Yuan ZHANG,Han-Sheng LI
  • About author:hanshengli@bit.edu.cn
    yaoyuan.zhang@bit.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22108013);the Petro China Innovation Foundation(2020D-5007-0402);Beijing Institute of Technology Research Fund Program for Young Scholars

摘要:

丙烯作为基本的化工原料,近年来需求不断增加,传统蒸汽裂解和催化裂化工艺难以满足丙烯需求。丙烷脱氢(PDH)工艺因原料来源丰富、丙烯选择性高和产物简单易分离等优势备受关注。传统PDH催化剂为Pt-Sn/Al2O3和CrO x /Al2O3,但铂基催化剂价格昂贵,铬基催化剂毒性较高。本体金属氧化物(氧化锆、氧化钛、氧化铝、氧化钨、氧化铕和氧化钆)催化剂具有本征活性高、价格低廉和无毒环保等优势,展现出一定的应用前景。基于此,主要从反应机理和催化剂结构性质调控2个方面综述本体金属氧化物在PDH反应中的研究进展。总结发现配位不饱和的金属阳离子(Mcus+)是主要的脱氢活性位点,其浓度可通过晶粒尺寸、晶相、金属掺杂、贵金属纳米粒子负载和还原性气体(氢气、一氧化碳)预处理等方式进行调控,进而提高PDH反应性能。最后,指出在本体金属氧化物基础上耦合其它脱氢活性位点(金属或金属氧化物)是进一步提高PDH催化性能的有效途径。

关键词: 丙烷脱氢, 催化剂, 多相反应, 金属氧化物, 烷烃

Abstract:

Propylene is a basic chemical raw material and the demand of which has been increasing in recent years, however, the traditional process such as steam cracking and catalytic cracking cannot meet the demand of propylene. Propane dehydrogenation (PDH) process has attracted extensive attention due to its wide sources of raw materials, high selectivity of propylene and easy separation of products. Traditional PDH catalysts are Pt-Sn/Al2O3 and CrO x /Al2O3, however, the platinum-based catalyst is expensive, and the chromium based catalyst has high toxicity. The bulk metal oxides (ZrO2, Al2O3, TiO2, WO3, Eu2O3 and Gd2O3) have the advantages of high intrinsic activity, low price, non-toxicity and environmental protection, exhibiting good application prospects. Based on this, this paper reviews the research progress of propane dehydrogenation from two aspects: the mechanism of PDH and the regulation of structure and properties for bulk metal oxide catalysts. It is summarized that coordinative unsaturated metal cation (Mcus4+) is the main dehydrogenation active site, and its concentration can be regulated by crystallite size, crystal phase, metal doping, noble metal nanoparticles loading, reducing gas (H2, CO) pretreatment, and so on. Finally, it is pointed out that the coupling of other dehydrogenation active sites (metals or metal oxides) on the basis of bulk metal oxides is an effective way to further improve the catalytic performance of PDH.

Key words: Propane dehydrogenation, Catalyst, Multiphase reaction, Metal oxides, Alkane

中图分类号: