摘要
在常压条件下,采用化学沉淀法制备了纳米二氧化铈(CeO_2)材料,应用其催化CO_2和甲醇(CH_3OH)直接合成碳酸二甲酯(DMC).考察了反应温度、CO_2压力和CeO_2用量对合成DMC收率的影响,结果表明CH_3OH用量为15mL时,在反应温度140℃、CO_2压力4.0 MPa、催化剂用量0.15g的最优条件下,合成收率可达47.9%.
Under atmospheric pressure,nano-sized cerium dioxide（CeO2）was prepared by chemical precipitation method.Catalyzed by this nano-sized CeO2,dimethyl carbonate（DMC）was synthesized directly from carbon dioxide and methanol（CH3 OH）.The effects of reaction temperature,carbon dioxide pressure and the dosage of CeO2 on the yield of DMC were investigated.The results showed that the highest yield was 47.9% at 140 ℃ with carbon dioxide pressure 4.0 MPa,catalyst dosage 0.15 g,and the amount of CH3 OH 15 mL.
出处
《吉首大学学报（自然科学版）》
CAS
2018年第1期74-78,共5页
Journal of Jishou University(Natural Sciences Edition)
基金
国家自然科学基金资助项目(21402063)
湖南省自然科学基金资助项目(2015JJ6091)
大学生研究性创新实验项目
关键词
二氧化铈
纳米
催化
碳酸二甲酯
cerium dioxide
nano meter
catalyst
dimethyl carbonate
