CuAl水滑石的合成及其催化活性  

Synthesis of CuAl Hydrotalcite and Its Catalytic Activity

作　　者：陈慧琴[1] 詹正坤[2] 

机构地区：[1]韶关学院化学系,广东韶关512005 [2]华中师范大学化学系,湖北武汉430079

出　　处：《合成化学》2007年第2期233-235,共3页Chinese Journal of Synthetic Chemistry

摘　　要：以Cu(NO3)2.6(H2O)和A l(NO3)3.9(H2O)为原料,NaOH和Na2CO3为沉淀剂,通过低过饱和共沉淀法合成了CuAl系列的碳酸根型水滑石,其结构经XRD,IR及TG-DTA表征。于55℃焙烧24 h后发现其复合氧化物对乙醇催化脱水、脱氢反应有一定的活性。A series of CuA1 hydrotalcite were synthesized from Cu （NO3）2 · 6 （H2 O） and Al（ NO2 ）3 · 9 （H2 O） by low supersaturation coprecipitation method using NaOH and Na2 CO3 as precipitators. The structures were characterized by XRD, IR and TG-DTA. The results showed that the hydrotalcites with n（Cu）/n （Al） = 2 - 4 exhibited nice crystal form and high purity. After calcined at 55 ℃ for 24 h, hydrotalcites were converted into composite oxides. It was found that the composite oxides had activity and selectivity for catalyzing the dehydrogenation and dehydration of ethanol.

关 键 词：水滑石 合成 复合氧化物 催化活性 

分 类 号：O614.12[理学—无机化学] O614.3[理学—化学]