文献类型：期刊文献

英文题名：Mesoporous Fe-based spindles designed as catalysts for the Fischer-Tropsch synthesis of C5+ hydrocarbons

作者：Zhang, Yulan Lin, Xizhu Li, Xinjun Wang, Chenguang Long, Qiong Ma, Longlong

第一作者：张玉兰

通信作者：Zhang, YL[1];Ma, LL[2]

机构：[1]Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, 1 Caiguan Rd, Guiyang 550003, Guizhou, Peoples R China;[2]Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, 1 Caiguan Rd, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China.|贵州理工学院;

年份：2018

卷号：42

期号：19

起止页码：15968-15973

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;Scopus(收录号：2-s2.0-85054022487);WOS:【SCI-EXPANDED(收录号:WOS:000447971700052)】；

基金：This work was supported financially by the National Nature Science Foundation of China [21805054, 51664009]; and the Project of Academic New Seedling Cultivation and Exploration Innovation [Qian Ke He Platform and Talent [2017] 5789-02].

语种：英文

摘要：Conventional mesoporous catalysts are generally obtained through the dispersion of active phases on porous supports to enhance catalytic performance. However, metal-support interactions can suppress the activation of iron oxides, and this can lead to lower catalytic activity. Moreover, the effects of supports on catalytic performance are complicated for Fischer-Tropsch (FT) synthesis. Herein, we developed novel mesoporous Fe-based spindles and the pores are self-assembled via active phases. This unique structure effectively avoids metal-support interactions during activation and FT synthesis, thus improving the FT activity. More importantly, the selectivity for C5+ hydrocarbons is found to be correlated with the pore size. It is identified that Fe/2CTAB, which has the largest pore volume among the three mesoporous spindles (Fe, Fe/CTAB, and Fe/2CTAB), affords the optimum C5+ selectivity, up to 65 wt%. This value is much higher than those for traditional co-precipitation catalysts and supported Fe-based catalysts. Moreover, FT synthesis over Fe/2CTAB leads to the lowest CH4 selectivity.