%0 Journal Article
%T Effects of Cu and K promoter on Fe-based catalysts for Fischer-Tropsch synthesis<br>助剂Cu、K对F-T合成铁基催化剂作用的表征研究
%A WANG Hong~
%A <br>王　洪
%A 郝庆兰
%A 刘福霞
%A 张承华
%A 杨　勇
%A 田　磊
%A 白　亮
%A 相宏伟
%A 李永旺
%A 徐斌富
%A 易　凡
%J 燃料化学学报
%D 2005
%I 
%X A series of spherical micron-scale Fe-based catalysts, in which K and Cu promoters are incorporated respectively or simultaneously, are prepared by a combination method of continuous co-precipitation and spray drying technology. The textural properties, reduction performance, phase transformation in reduction and/or carbonization process are studied by means of low temperature N_2 adsorption, MES, XRD, H_2-TPR, CO-TPR and constant temperature reduction in H_2, CO and syngas environment. The results indicate that the addition of K promoter can increase the surface area of Fe-based catalyst and iron species dispersion in catalyst, and reinforce the interaction between Fe_2O_3 and silica. The addition of Cu promoter improves the reduction of catalyst and the formation of Fe_3O_4 phase in H_2 and syngas environment, but Cu promoter favors the formation and stabilization of a-Fe phase in CO environment. The addition of K promoter only will suppress the reduction and/or carbonization of catalyst in H_2-containous environment, but the simultaneous addition of K and Cu promoters can apparently enhance the reduction and/or carbonization in H_2, CO and syngas environment, which shows the synergic effect of Cu and K promoters.
%K Fischer-Tropsch synthesis
%K Fe-based catalyst
%K Cu promoter
%K K promoter
%K reduction
%K carbonization<br>F-T合成
%K 铁基催化剂
%K K助剂
%K Cu助剂
%K 还原
%K 炭化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=C6AB115B41BD2F1616ECDB095B69B8ED&aid=9A4C3BAAD2347CD2&yid=2DD7160C83D0ACED&vid=27746BCEEE58E9DC&iid=CA4FD0336C81A37A&sid=CFAC5CB624A41AFD&eid=C36EC077A8A90308&journal_id=0253-2409&journal_name=燃料化学学报&referenced_num=6&reference_num=15