%0 Journal Article
%T Effect of niobium promoter on iron-based catalyst for Fischer-Tropsch reaction
%A Sardar ALI
%A Noor Asmawati MOHD ZABIDI
%A Duvvuri SUBBARAO
%A <br>Sardar ALI
%A Noor Asmawati MOHD ZABIDI
%A Duvvuri SUBBARAO
%J 燃料化学学报
%D 2012
%I 
%X Niobium-promoted Fe/CNTs catalysts were prepared using a wet impregnation method.Samples were characterized by nitrogen adsorption,H2-TPR,TPD,XRD and TEM.The Fischer-Tropsch Synthesis(FTS) was carried out in a fixed-bed microreactor at 220 ℃,1 atm and H2/CO=2 for 5 h.Addition of niobium into Fe/CNTs increased the dispersion,decreased the average size of iron oxide nanoparticles and the catalyst reducibility.Niobium-promoted Fe catalyst resulted in appreciable increase in the selectivity of C5+ hydrocarbons and suppressed methane formation.These effects were more pronounced for the 0.04%Nb/Fe/CNTs catalyst,compared to those observed from other niobium compositions.The 0.04%Nb/Fe/CNTs catalyst enhanced the C5+ hydrocarbons selectivity by a factor of 67.5% and reduced the methane selectivity by a factor of 59.2%.
%K CNTs
%K iron
%K niobium
%K Fischer-Tropsch synthesis<br>CNTs
%K iron
%K niobium
%K Fischer-Tropsch
%K synthesis
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=C6AB115B41BD2F1616ECDB095B69B8ED&aid=EC09C1218AC1072BC22FF29D0EE14B47&yid=99E9153A83D4CB11&vid=1371F55DA51B6E64&iid=CA4FD0336C81A37A&sid=B6DA1AC076E37400&eid=8E6AB9C3EBAAE921&journal_id=0253-2409&journal_name=燃料化学学报&referenced_num=0&reference_num=21