摘要
采用铝阳极氧化法制备了填料式Al2O3-Al载体,采用浸渍法制备了MgO/Al2O3-Al固体碱催化剂,并用于丙酮缩合制二丙酮醇的反应中,考察了催化剂制备条件对催化剂活性的影响。结果表明,催化剂适宜的制备条件为:浸渍液浓度2.0%,浸渍温度55℃,浸渍时间2.0h,焙烧温度550℃,焙烧时间4.0h。在此条件下,丙酮的转化率为21.08%,二丙酮醇的选择性为100%。
A novel solid alkali MgO/Al203-Al catalyst for catalytic distillation was prepared by impregnation of anodized aluminium plates formed by anodic oxidation of high-purity aluminium foils with aqueous Mg（NO3）2. It was used as catalyst to synthesize diacetone alcohol by condensation of acetone. The optimum synthesis conditions were investigated. The results indicated that：Mg （NO3）2 concentration is 2.0%, dipping temperature is 55℃, dipping time is 2.0h, calcination temperature is 550℃, calcination time is 4.0h. The conversion of acetone is 21.08%, and the selectivity of diacetone is 100%.
出处
《化学工程师》
CAS
2010年第2期22-23,29,共3页
Chemical Engineer
关键词
阳极氧化
固体碱
丙酮缩合反应
催化精馏
anodic oxidization
solid alkali
condensation of acetone
catalytic distillation
