铁/活性炭催化剂上费托合成反应产物分布的非Anderson-Schulz-Flory特性

Non-Anderson-Schulz-Flory Product Distribution of Fischer-Tropsch Synthesis over Iron/Activated Charcoal Catalyst

在浆态反应釜中研究了铁 /活性炭催化剂上费 托合成 (Fischer Tropschsynthesis ,FTS)反应产物分布和链增长几率 (Anderson Schulz Flory(ASF)链增长几率和本征链增长几率 ) .产物分布通常在C1处和C2 处偏离ASF分布 ,呈现C1处偏高而C2 处偏低的情况 .本征链增长几率的研究结果表明 ,以活性炭为载体的铁基费 托合成催化剂上存在烯烃的再吸附二次反应 ,使产物分布偏离ASF分布 .铁 /活性炭催化剂上同时伴随水煤气变换 (watergasshift ,WGS)反应 .XRD检测到铁 /活性炭催化剂上存在FexC和Fe3O4

The Fischer-Tropsch synthesis (FTS) product distribution and chain growth probability (Anderson-Schulz-Flory (ASF) chain growth probability and intrinsic chain growth probability) were studied on activated charcoal-supported iron (Fe/AC) catalyst in an autoclave slurry reactor. It was demonstrated that the product distribution on Fe/AC catalyst deviates from ASF product distribution. The experimental value at C-1 is larger than that in ASF product distribution, but the value at C-2 is lower than that in ASF plot. The chain growth investigation showed that the secondary reaction caused by olefins exists on Fe/AC catalyst under F-T condition, leading to that the product distribution deviates from ASF. It was showed that the water gas shift (WGS) reaction takes place simultaneously with FTS reaction. The XRD test found that there exist two kinds of active phases, FexC and Fe3O4, on the used Fe/AC catalyst.