个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:盘锦校区管委会副主任兼教学与科研工作部部长
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:工业催化. 物理化学
办公地点:化工实验楼B427
联系方式:18641143913
电子邮箱:guoxw@dlut.edu.cn
The anti-sintering catalysts: Fe-Co-Zr polymetallic fibers for CO2 hydrogenation to C-2 = -C-4 = -rich hydrocarbons
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论文类型:期刊论文
发表时间:2018-01-01
发表刊物:JOURNAL OF CO2 UTILIZATION
收录刊物:SCIE、EI、Scopus
卷号:23
页面范围:219-225
ISSN号:2212-9820
关键字:CO2 Hydrogenation; Fe-Co-Zr Fibers; K Promotion; C-2 =-C-4 =-Rich hydrocarbons; Metal sintering
摘要:Polymetallic fibers of 13Fe2Co/ZrO2 and 13Fe2Co100Zr were prepared by impregnation and an in situ electrospinning technique. The iron, cobalt and zirconium components in the 13Fe2Co100Zr catalyst are more dispersed than the impregnation one, as indicated by SEM/EDS, TEM, XRD, H-2-TPR and N-2 adsorption techniques. CO2 conversion increased by a factor of 2 and the selectivity to C-2 (+) hydrocarbons increased 15 times on the 13Fe2Co100Zr polymetallic fibers compared with the 13Fe2Co/ZrO2 supported catalyst. The 0.18 s(-1) TOF (turnover frequency) of the polymetallic fibers exceeded that of the supported catalyst (0.12 s(-1)). Potassium addition to the 13Fe2Co100Zr catalyst further improved the selectivity to C-2(=)-C-4(=), which increased to 27.5% on a 10K13Fe2Co100Zr catalyst. The polymetallic fibers showed stable activity over the reaction period. The activity of the 13Fe2Co/ZrO2 catalyst, however, decreased rapidly due to metal sintering as observed with TEM and XRD. The in situ electrospinning technique can effectively prevent metal sintering and provide high CO2 conversion efficiency.