【摘要】 用微型固定床反应器，在中压（１．１ＭＰａ）条件下考察了助剂Ｌａ、Ｖ、Ｚｎ、Ｋ对共沉淀Ｆｅ－Ｍｎ催化剂ＣＯ＋Ｈ２合成反应性能的影响。反应结果表明，助剂Ｌａ、Ｋ的加入均使ＣＯ＋Ｈ２转化率降低，烃的选择性提高，产物中ＣＨ４减少，Ｃ５＋增多，产物平均分子量增大，同时烯烷比也提高，但是助剂Ｋ使催化剂失活较快；助剂Ｖ使ＣＯ＋Ｈ２的转化率降低，使产物中ＣＨ４增加，Ｃ５＋减少，Ｖ对烯烷比影响不明显，但提高了合成反应的稳定性；助剂Ｚｎ使ＣＯ＋Ｈ２的转化率提高，产物中ＣＨ４和Ｃ５＋的含量都减少，Ｃ２～Ｃ４烃明显增加，烯烷比降低。更多还原

【Abstract】 The effect of promoters La,V, Zn and K on the performance of the co-precipitated Fe/Mn catalyst for CO+H2 synthesis was studied under a medium pressure of 1.1 MPa by using a fixed-bed microreactor. The results shown that the addition of La and K decreases the conversion of CO+II2,raises the selectivity to hydrocarbons, reduces CH4 content and increases Cd content in the product,increases the average molecular weight of the product as well as the olefin/paraffin ratio.However,promoter K results in a more rapid loss of the catalyst activity. Promoter V leads to a decrease in CO+H,conversion,increase of CH4 content and decrease of C5+ content in the product.V does not affect the olefin/paraffin ratio obviously but promotes the stability of synthesis.Promoter Zn increases the conversion of CO+H2,redllces CH4 and 5+ contents in the product,obviously increases hydrocarbons ranging from C2 to C4 and reduces the ratio of olefin/paraffin.更多还原