载体预处理对贵金属铂系催化剂性质的影响  

Effects of the Pretreatment of Support on the Properties of Noble.metal Platinum Catalysts

作　　者：储伟[1] 张涛[2] 魏强 孙孝英[2] 

机构地区：[1]中国科学院成都有机化学研究所,成都610041 [2]中国科学院大连化学物理研究所,大连116023

出　　处：《合成化学》2000年第5期428-430,共3页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金!资助项目 (No.2 990 30 1 1 )

摘　　要：载体在 4个预定温度下进行了预处理 ,用湿式浸渍法制备了氧化铝担载铂系催化剂。应用TPR,H2 - TPD,XRD等方法对制备的催化剂进行了表征 ,结果表明随着预处理温度的升高 (室温～85 0℃ ) ,贵金属铂系催化剂分散度提高 ,活性中心数目增加。The alumina supported platium catalysts were prepared by wet impregnation mathod; the support was pretreated at four diffent temperatures. The TPR, H_2.TPD,XRD techniques were used for characterizing the influence of support pretreatments on the supported platinum catalysts. With the rizing of the pretreatment temperature(from room temperature to 850℃), the dispersion of noble.metal platinum in the catalysts was enchanced and the amount of active sites was augmented. [KH-2]

关 键 词：铂催化剂 载体 处理条件 还原性质 表征 

分 类 号：TQ426.81[化学工程] O643.36[理学—物理化学]