硝酸根型水滑石的制备及其在合成异佛尔酮中的应用  

Preparations of nitrated hydortlcite and its application in catalysis of synthesis of Isophorone

作　　者：刘艳侠[1,2] 梁旭 徐贤伦[2] 蒋元力 

机构地区：[1]河南能源化工集团研究院有限公司,河南郑州450046 [2]中国科学院兰州化学物理研究所,甘肃兰州730000

出　　处：《现代化工》2015年第5期121-124,126,共5页Modern Chemical Industry

摘　　要：采用共沉淀法制备了碳酸根型和硝酸根型钡掺杂的水滑石,并用XRD、AAS、BET、SEM对样品进行表征。结果发现,硝酸根型水滑石排列紧密,钡掺杂的硝酸根型水滑石所得混合氧化物具有特殊的孔结构。将焙烧后的混合氧化物应用于丙酮缩合制备异佛尔酮的反应中,钡掺杂的硝酸根型水滑石所得混合氧化物表现出较好的催化活性,丙酮转化率和异佛尔酮选择性分别为25.7%和61.6%。Ba-doped hydrotalcites intercalated by nitrate and carbonate, respectively, are synthesized by co- precipitation method with short aging time. The obtained products are characterized by atomic absorption spectroscopy （AAS） ,powder X-ray diffraction （XRD）, nitrogen physisorption and scanning electron microscope （SEM）. The mixed oxide derived from Ba-doped hydrotaleites intercalated by nitrate has different pore structure. When the calcinated Ba- doped hydrotalcites intercalated by nitrate is applied in synthesis of isophorone with acetone condensation, the excellent catalytic activity is achieved. The acetone conversion and isophorone selectivity are 25.7% and 61.6% ,respectively.

关 键 词：丙酮 异佛尔酮 水滑石 钡 掺杂 

分 类 号：O643.32[理学—物理化学]