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筛选出由催化丁醇氨化合成丁腈的催化剂Co20.0-Ni3.0/γ-Al2O3,并对其结构进行了表征。在固定床反应器上对该催化剂催化的由正丁醇(异丁醇)合成正丁腈(异丁腈)的工艺及稳定性进行了研究。当反应在410℃(420℃)、氨醇摩尔比3∶1、液时空速LHSV0.3h-1(0.2h-1)及常压条件下进行时,正丁醇(异丁醇)的转化率达100%,正丁腈(异丁腈)收率达81.6%(80.6%)。连续运转100h,催化剂活性几乎没有变化,正丁腈(异丁腈)的选择性下降不足1%。结果表明,该催化剂具有优良的催化性能和良好的稳定性。
The catalyst Co20.0-Ni3.0 / γ-Al2O3 catalyzed by butanol amidation to butyronitrile was screened and its structure was characterized. The catalyst-catalyzed synthesis of n-butyronitrile (isobutylnitrile) from n-butanol (isobutanol) was studied on a fixed bed reactor. When the reaction was carried out at 410 ° C (420 ° C), the molar ratio of amino alcohol to alcohol was 3: 1, the liquid hourly space velocity LHSV was 0.3 h-1 (0.2 h-1) and atmospheric pressure, the conversion of n-butanol Rate of 100%, n-butyronitrile (isobutyronitrile) yield of 81.6% (80.6%). Continuous operation 100h, almost no change in catalyst activity, n-butyronitrile (isobutyronitrile) selectivity decreased less than 1%. The results show that the catalyst has excellent catalytic performance and good stability.