【摘要】 用掺杂Ｃｒ的ＭＣＭ—４８中介孔分子筛催化剂对α－二十醇催化氧化制α-二十酸进行了考察，确定了反应最佳温度和反应时间，并对目的反应的催化性能进行了评价。结果表明，添加适量的Ｃｒ可提高α-二十醇氧化成α-二十酸的收率。ＸＲＤ和ＩＲ技术表征结果表明，掺杂的Ｃｒ能进入ＭＣＭ—４８分子筛的骨架。反应产物的收率同分子筛催化剂的Ｌ酸相对含量有一定顺变关系，用红外先谱对目的产物进行了半定量分析。更多还原

【Abstract】 A series of MCM-48 mesoporous molecular sieves containing chromium were usedto catalytically oxidize a -eicosanol to produce a-eicosanoic acid. Optimal reaction time andtemperature for the topic reaction were reported. The evaluation of the catalytic properties ofthe series of chromium doped molecular sieves for the topic reaction indicates that Cr shows better modification for the catalyst. XRD and IR determinations reveal the entrance of the Cr ionsinto the framework of MCM --48 zeolite. The yield of a --eicosanoic acid is related with the relative intensity of L acid center of the catalysts which is approximately proportional to theamounts of the doped chromium.更多还原