Abstract: A series of Mg-Al acid-base compounds were prepared by coprecipitation method，and the effects of solid base and acid properties on the catalytic performance were studied. CO2-TPD and NH3-TPD results showed that the prepared Mg-Al compounds have both were weak acid and weak basic sites. The catalyst exhibited the best activity for acetone condensation to isophorone when the acid amount was 0.21 mmol/g and the basic amount was 0.015 mmol/g.

摘要： 采用共沉淀法制备镁铝酸碱复合氧化物催化剂，考察了固体酸碱性质对丙酮缩合生成异佛尔酮反应的影响。利用CO2和NH3程序升温脱附法对催化剂的酸碱性进行了表征，结果表明镁铝酸碱复合氧化物具有弱酸和弱碱中心，催化活性测试结果表明催化剂表面酸量约为0.21 mmol/g，碱量约为0.015 mmol/g时催化剂表现较好的活性。