考察了载体TiO2 -ZrO2 的制备条件对B2 O3/TiO2 -ZrO2 催化环己酮肟气相Beckmann重排反应性能的影响 ,确定较佳的制备条件 :分别以四氯化钛和氧氯化锆为钛源和锆源 ,采用反滴法将原料慢慢地滴加到沉淀剂氨水溶液中 ,沉淀终点的pH等于 9 0 ,沉淀的老化温度 2 5℃ ,焙烧温度 5 0 0℃。环己酮肟的转化率和己内酰胺的选择性分别高达 99 7%和 97 0 %。 The effects of the preparation conditions of TiO2-ZrO2 on the catalytic performance of B2 O3 / TiO2-ZrO2 for the gas phase Beckmann rearrangement of cyclohexanone oxime were investigated. The optimum preparation conditions were as follows: titanium tetrachloride and zirconium oxychloride were used as titanium Source and zirconium source, the raw material is slowly dripped into the precipitating agent ammonia solution by the reverse dripping method, the pH of the precipitating end point is equal to 90, the aging temperature of the precipitate is 25 DEG C, and the roasting temperature is 500 DEG C. The conversion of cyclohexanone oxime and the selectivity of caprolactam were as high as 99.7% and 97.0%, respectively.