摘要
综述了费托合成钴基催化剂载体材料表面改性及催化剂失活机理的研究进展。指出对载体表面进行预处理可以调节载体和钴物种之间的相互作用,进而影响费托合成催化剂的还原度、分散度和催化性能。同时利用氧掺杂和氮掺杂的方法改变碳材料表面的化学性质,可以提高锚定钴物种的能力。钴基催化剂的失活是费托合成反应的主要问题之一,针对失活机理的研究可以提高钴基催化剂的稳定性。由于钴基催化剂合成的成本较高,因此通过对载体的表面改性和催化剂失活机理的研究来改善钴基催化剂的活性、稳定性以及产物的选择性是值得深入研究的课题。
The research progresses are reviewed in surface modification of support materials of cobalt-based catalysts for Fischer-Tropsch synthesis and the deactivation mechanism of the catalysts. It is pointed out that pretreatment of the support surface can tune the interaction between the support and the cobalt species,and further affect the reducibility,dispersion and catalytic performance of the catalysts for Fischer-Tropsch synthesis. Meanwhile,the oxygen doping and nitrogen doping methods can be used to change the chemical properties of carbon material surface,which can improve their ability to anchor cobalt species.The deactivation of cobalt-based catalyst is one of the main challenges in FischerTropsch synthesis reaction,and the research on deactivation mechanism is useful to improve the stability of cobalt-based catalyst.Since the synthetic cost of cobalt-based catalyst is relatively high,it is worthy of further improving the activity,stability and selectivity of cobalt-based catalyst through studying the surface modification technique of the support and the deactivation mechanism of the catalyst.
作者
李硕
狄佐星
罗明生
LI Shuo;DI Zuo-xing;LUO Ming-sheng(College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;College of Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第2期48-52,共5页
Modern Chemical Industry
基金
北京市重点实验室开放基金项目(BZ041420180004)
关键词
费托合成
钴基催化剂
碳载体
载体改性
失活机理
Fischer-Tropsch synthesis
cobalt-based catalyst
carbon-based support
support modification
deactivation mechanism
