摘要
采用Stber法和浸渍法制备了SiO2修饰的TiO2载体,并用浸渍法制备了钴基费-托合成催化剂,考察了其费-托合成催化性能.分别采用透射电子显微镜(TEM)、X-射线衍射(XRD)、低温氮气物理吸附-脱附、氢气程序升温还原(H2-TPR)等技术对载体和催化剂进行了表征,在固定床反应器上对催化剂的催化性能进行了评价.结果表明:SiO2的引入能减弱钴物种与TiO2之间的相互作用力,提高钴物种的还原性,使催化剂的催化性能显著提高.
SiO2 modified TiO2 supports were synthesized by Stber and impregnation methods. The cobalt catalysts supported on the SiO2 modified TiO2 were prepared by incipient wetness impregnation and the performances in FischerTropsch（ FT） synthesis were investigated. The supports and catalysts were characterized by TEM,XRD,H2-TPR and nitrogen adsorption-desorption. The FT catalytic performances of catalysts were tested on fix-bed reactor. The results indicated that SiO2 could decrease the interaction of support and cobalt oxide and improve the reducibility of cobalt oxide,thus significantly improve the FT catalytic performances of catalysts.
出处
《中南民族大学学报（自然科学版）》
CAS
北大核心
2015年第1期10-13,22,共5页
Journal of South-Central University for Nationalities：Natural Science Edition
基金
国家自然科学基金面上资助项目(21473259)
国家自然科学基金-石油化工联合基金重点支持项目(U1463210)
湖北省重大科技创新计划资助项目(2013AGB002)
