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OALib Journal期刊
ISSN: 2333-9721
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kf/al2o3催化剂上苯脲醇解合成苯氨基甲酸甲酯的研究
, PP. 1507-1511
Keywords: kf/al2o3,苯氨基甲酸甲酯,苯脲,甲醇
Abstract:
？采用浸渍法制备负载kf固体碱催化剂，应用于苯脲和甲醇制备苯氨基甲酸甲酯的反应，考察了氧化物载体、卤化钾种类对催化剂性能的影响，kf/al2o3催化剂显示出良好的催化活性和苯氨基甲酸甲酯的选择性。通过对kf/al2o3催化剂中kf的负载量和催化剂焙烧温度的研究发现，在500℃焙烧4h、负载质量分数50%kf的催化剂能够更好地促进mpc生成，苯脲转化率和苯氨基甲酸甲酯选择性分别达到96.5%和86.3%。xrd分析表明，kf与al2o3之间存在较强的相互作用，部分转化为k3alf6。kf与k3alf6分别对甲醇的活化和苯脲的选择性起促进作用，两者的协同效应共同促进了目标产物苯氨基甲酸甲酯的生成。
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