Molecular Catalysis ( IF 3.9 ) Pub Date : 2017-12-08 , DOI: 10.1016/j.mcat.2017.12.006 G. Parameswaram , P.S.N. Rao , A. Srivani , G. Nageswara Rao , N. Lingaiah
MgO-CeO2 catalysts were investigated for selective synthesis of glycerol carbonate by glycerol transesterification with dimethyl carbonate as carbonating source. Co-precipitation technique was used to prepare Mg-Ce oxides by with different molar ratios. Samples characteristics were derived by N2 adsorption, XRD, FE-SEM, TGA-DTA and CO2 -TPD. The catalysts surface structural properties and basicity were directed by the composition of oxides and treatment temperature. The sample with 3:1 Mg/Ce ratio exhibited highest basicity. The same catalyst treated at a temperature of 650 °C, exhibited highest glycerol carbonate yield of 86%. The reaction conditions were also optimized.
中文翻译:
镁-二氧化铈混合氧化物催化剂,用于甘油选择性酯交换为碳酸甘油酯
研究了MgO-CeO 2催化剂用于以碳酸二甲酯为碳酸源的甘油酯交换反应选择性合成碳酸甘油酯。采用共沉淀技术制备了不同摩尔比的Mg-Ce氧化物。通过N 2吸附,XRD,FE-SEM,TGA-DTA和CO 2 -TPD得出样品特征。催化剂的表面结构性质和碱度取决于氧化物的组成和处理温度。Mg / Ce比为3:1的样品具有最高的碱度。在650℃的温度下处理的相同催化剂表现出86%的最高碳酸甘油酯收率。还优化了反应条件。