郭新闻

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

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Fe-MOF-derived highly active catalysts for carbon dioxide hydrogenation to valuable hydrocarbons

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论文类型:期刊论文

发表时间:2017-10-01

发表刊物:JOURNAL OF CO2 UTILIZATION

收录刊物:Scopus、SCIE、EI

卷号:21

页面范围:100-107

ISSN号:2212-9820

关键字:Pyrolysis of MOFs; Hydrogenation of CO2; Carbon supported catalysts; Valuable hydrocarbons; Phase transformation

摘要:Fe-based catalysts were acquired by one-step Fe-MIL-88B pyrolyzation and it showed high catalytic performance on hydrogenated conversion of carbon dioxide to valuable hydrocarbons. The iron compositions and catalytic performance of the catalysts were determined by pyrolysis temperatures according to XRD, SEM, TEM, N(2-)physisorption, Raman and evaluation results. Magnetite was obtained at 773 K while metallic iron was the main phase when the pyrolysis temperature increased to 973 K. Different catalytic performances over these catalysts were attributed to the transformation of iron species under the reaction conditions. Olefin-to-paraffin ratio (O/P) over pyrolyzed and K-doped catalysts was 1.3 and 5.5, respectively, and the two samples exhibited CO2 conversion with 46.0% and 43.1%, respectively. Higher catalytic performance was achieved when certain amount of Fe3O4 and chi-Fe5C2 existed in catalysts whereas metallic iron and/or theta-Fe3C had detrimental effects on lower conversion of CO2 and selectivity of valuable hydrocarbons.