钴镍铁水滑石的合成、表征及衍生复合氧化物酸碱催化活性研究  

Synthesis,characterization and catalysis of Co-Ni-Fe hydrotalcite like compounds

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：《化学研究与应用》2009年第3期353-356,共4页Chemical Research and Application

摘　　要：A series of Co-Ni-Fe hydrotalcite like compounds have been synthesized by combining a mixed solution of Co(NO3)2·6H2O,Ni(NO3)2·6(H2O) and Fe(NO3)3·9H2O with a second solution containing NaOH and Na2CO3.The compounds have been characterized by XRD,IR and TG-DTA.The results showed that the hydrotalcites with M2+/M3+ molar ratios of 2 to 4 have the nice crystal form and high purity.After calcined,hydrotalcites are converted into composite oxides.It is found that the composite oxides has activity and selectivity for catalyzing the dehydrogenation and dehydration of ethanol.A series of Co-Ni-Fe hydrotalcite like compounds have been synthesized by combining a mixed solution of Co（ NO3 ） 2· 6H2O,Ni（NO3 ）2 · 6（H2O） and Fe（ NO3 ）3 · 9H2O with a second solution containing NaOH and Na2CO3. The compounds have been characterized by XRD, IR and TG-DTA. The results showed that the hydrotalcites with M^2＋/M^3＋ molar ratios of 2 to 4 have the nice crystal form and high purity. After calcined, hydrotalcites are converted into composite oxides. It is found that the composite oxides has activity and selectivity for catalyzing the dehydrogenation and dehydration of ethanol.

关 键 词：钴镍铁水滑石 合成及表征 复合氧化物 催化活性 

分 类 号：O643.36[理学—物理化学]