摘要
低碳烷烃氧化脱氢是制备烯烃类基础化工原料的重要方式,相较于已工业化的直接脱氢过程具有不受热力学平衡限制、催化剂不易积碳失活等优势.低碳烷烃氧化脱氢应用的瓶颈在于反应易发生深度氧化而生成CO和CO 2.近年来,硼基催化剂(如氮化硼和氧化硼等)因在烷烃氧化脱氢反应中表现出高烯烃选择性和优异的抑制深度氧化能力而备受关注.本文系统总结了已报道的硼基催化剂在低碳烷烃氧化脱氢反应中的催化性能,以及目前对这些催化剂上的活性位和反应机理的认识及争议,并针对该类非金属催化剂的拓展应用和先进表征技术等进行了展望,以期为相关催化研究提供有益借鉴.
Oxidative dehydrogenation of light alkanes is an important route to produce basic alkene feedstocks in chemical industry and possesses several advantages compared to the state-of-the-art direct dehydrogenation process that has been industrialized,such as not limited by thermodynamic equilibrium and high catalyst stability due to strong carbon deposition resistance.However,application of the oxidative dehydrogenation of light alkanes is obstructed by the tendency of forming CO and CO 2 from the deep oxidation of the alkene products.Recently,boron-based catalysts(e.g.boron nitride and boron oxide)have drawn great attentions because of their high selectivities to alkenes and excellent ability to suppress deep oxidation.This comprehensive review systematically summarizes the catalytic performance of boron-based catalysts in oxidative dehydrogenation of light alkanes that have been reported and discusses the current understanding and controversy about the active site and reaction mechanism of these catalysts.In attempt to provide references for relevant catalytic studies,a perspective on exploring extended applications and advanced characterization techniques for such nonmetallic catalysts is also provided.
作者
韩沛杰
殷敏
王帅
HAN Peijie;YIN Min;WANG Shuai(State Key Laboratory of Physical Chemistry of Solid Surfaces,National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China)
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第5期620-629,共10页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金(21922201,21872113)。
关键词
低碳烷烃
低碳烯烃
氧化脱氢
硼基催化剂
选择性
light alkanes
light alkenes
oxidative dehydrogenation
boron-based catalysts
selectivity
