摘要
采用Ｆｅ改性的Ｃｕ－Ｍｎ－ＺｒＯ２催化剂研究ＣＯ加氢合成低碳醇。在Ｔ＝５５３Ｋ，Ｐ＝６０ＭＰａ，ＧＨＳＶ＝３０００ｈ－１的条件下，产物主要由直链脂肪醇和异丁醇组成，总醇的时空产率为０１４ｇ·ｍｌ－１ｈ－１，其中Ｃ２＋醇的选择性为３０％，同时高级烃类生成量很少。认为在反应过程中有两种合成醇的反应机理同时存在。Ｆｅ和ＺｒＯ２之间存在着一定的协同效应。此外碱金属助剂的加入增强了Ｃ２＋醇的选择性。
The effect of Fe on the catalytic performance of Cu - Mn - Zr O2 catalystfor C Ohydrogenation wasinvestigated Fe wasfound to be an effective promoterforthe synthe sis of mixed higher alcohols ,and the productivity of alcohols reached 0 14g ml- 1h - 1 withthe selectivity for C2 + alcohols about 30w % (at T = 553 K, P = 6 0 M Pa , G H S V =3000h - 1) A mixture with comparable amount oflinear alcohols and iso - butanol was pro duced ,the increase oftemperature leaded predominant alcohol products changed from linearspecies to iso - butanol It was thoughtthatthe products distribution was determined by twokinds of mechanisms ,and the synergistic effectin catalysts led to the production of consid erable amountof iso - butanolat moderate reaction conditions No obvious amountof higherhydrocarbons was observed The further modification by potassium was found to enhance C2 + alcohols selectivity ,and supprss the formationof methane effectively, but the formation of CO 2 increased obviously
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第4期301-304,共4页
Journal of Fuel Chemistry and Technology
基金
国家自 然科学 基金
