摘要
研究了Ｆｅ－Ｍｎ－Ｋ催化剂ＦＴ合成动力学及产物分布规律，并探讨了反应条件对（ＣＯ＋Ｈ＿２）转化率及α－己烯／正己烷比的影响。结果表明，该催化剂的产物分布需用两个α才能较好地描述；反应温度及反应气氛下Ｈ＿２／ＣＯ比对α－己烯／正己烷比具有较大影响：最后获得的动力学方程为：－ｒ＿（Ｈ＿２＋ＣＯ）＝ａＰ＿（ＣＯ）Ｐ＿（Ｈ＿２）／（Ｐ＿（ＣＯ）＋ｂＰ＿（Ｈ＿２Ｏ）），从活化能的角度看，该粒度催化剂存在着内扩散效应。
The kinetica and preduct distribution of Fischer-Tropsch synthesis over the precipitatediron catalyst were studied in a berty reactor under conditions of T=539～590K,P=1.0～2. 6MPa,feed H_2/CO ratio of 1. 47～4.04 ,and GHSV of 331～835h￣(-1). The best fit rate expression was as fol-lows :-r_(H_2+CO)=aP_(CO)P_(H_2)/(P_(CO)+ bP_(H_2O)). A two α ASF distribution was needed to correlate the dataof product distribution. Results indicated that the ratio of α-hexene to n-hexane and(CO+H_2) conver-sion were affected by rcaction temperature and H_2/CO ratio strongly.
出处
《合成化学》
CAS
CSCD
1994年第4期343-348,共6页
Chinese Journal of Synthetic Chemistry
关键词
铁锰催化剂
FT合成
反应动力学
FT synthesis, Iron-based catalyst , Product distribution, Kinetics.
