助剂锆对费托合成反应性能的影响

EFFECT OF ZrO2 LOADINGS ON CATALYTIC PERFORMANCE OF Co/SiO2 FOR F - T SYNTHESIS

摘要: 考察了添加Zr助剂对钴基催化剂费托合成反应性能的影响，并进行TPR、TPO、XRD等表征。结果表明，Zr能显著提高催化剂的活性，使C5^ 烃类的选择性增大。Zr的含量和催化剂焙烧温度、反应温度均对催化剂的性能有较大影响。用CODEX软件优化表明，当催化剂中Zr含量为Zr／Co＝0．36(原子比)，焙烧温度为673K，反应温度为488K时，C5^ 收率最大。加入Zr能有效抑制积炭的生成，但催化剂上炭物种的活性变差。

Abstract: The effect of ZrO2 loadings on Catalytic Performance of Co/SiO2 for F - T Synthesis catalysts was studied. It was found that the addition of cerium oxide can enhance the catalytic activity and the selectivity to C5+ hydrocarbons. Reaction temperature, cal