广州化工
廣州化工
엄주화공
Guangzhou Chemical Industry
2015年
21期
94-95,106
,共3页
酯交换%负载型镁铝复合氧化物%炭材料
酯交換%負載型鎂鋁複閤氧化物%炭材料
지교환%부재형미려복합양화물%탄재료
transesterification%carbon-supported MgO-Al2 O3 mixed oxide catalysts%carbon materials
采用简单的浸渍法制备了负载型镁铝复合氧化物催化剂，并考察了催化剂在碳酸二甲酯与碳酸二乙酯酯交换反应上的催化性能。系统地研究了载体种类、 Mg/Al比、焙烧温度对材料催化性能的影响。研究表明：采用炭材料NC-2为载体的催化剂活性最好，反应过程中无活性组分流失，反应后的催化剂经简单焙烧处理后可多次循环利用。
採用簡單的浸漬法製備瞭負載型鎂鋁複閤氧化物催化劑，併攷察瞭催化劑在碳痠二甲酯與碳痠二乙酯酯交換反應上的催化性能。繫統地研究瞭載體種類、 Mg/Al比、焙燒溫度對材料催化性能的影響。研究錶明：採用炭材料NC-2為載體的催化劑活性最好，反應過程中無活性組分流失，反應後的催化劑經簡單焙燒處理後可多次循環利用。
채용간단적침지법제비료부재형미려복합양화물최화제，병고찰료최화제재탄산이갑지여탄산이을지지교환반응상적최화성능。계통지연구료재체충류、 Mg/Al비、배소온도대재료최화성능적영향。연구표명：채용탄재료NC-2위재체적최화제활성최호，반응과정중무활성조분류실，반응후적최화제경간단배소처리후가다차순배이용。
Carbon-supported MgO-Al2 O3 mixed oxide catalysts were prepared with simple impregnation method. Their catalytic properties in the transesterification of dimethyl carbonate and diethyl carbonate were also studied. The results showed that the catalytic performance of the catalysts can be influenced by various factors, such as Mg/Al ratio, type of supports and calcined temperatures. Mesoporous carbon NC-2 was the best support compared with another carbon material. It was also found that MgO-Al2 O3/NC-2 showed very high stability, since the active species did not leach into the liquid phase and the catalytic activity of the recycled sample did not change considerably.
