Li掺杂CeO2固体碱催化甘油酯交换合成碳酸甘油酯
针对由甘油制备碳酸甘油酯的酯交换法中催化剂制备方法复杂、活性组分易流失等问题,采用一锅法制备了Li掺杂CeO2固体碱催化剂。对催化剂进行了X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、BET、X射线光电子能谱(XPS)、CO2程序升温脱附(CO2-TPD)等表征。以甘油转化率和碳酸甘油酯产率为指标,对催化剂进行了筛选,并采用单因素实验对甘油酯交换合成碳酸甘油酯的工艺条件进行了优化,同时考察了催化剂的重复使用性能。结果表明:Li与CeO2之间能够产生协同作用,Li的掺杂能够明显增加CeO2的中强碱活性位点;Li、Ce与柠檬酸物质的量比为0.3∶ 1∶ 1时,催化剂催化活性最好;甘...
Main Author: | 陈一峰,范明明,冷炎,蒋平平,张萍波 CHEN Yifeng, FAN Mingming, LENG Yan, JIANG Pingping, ZHANG Pingbo |
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Format: | Article |
Language: | English |
Published: |
中粮工科(西安)国际工程有限公司
2023-03-01
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Series: | Zhongguo youzhi |
Subjects: | |
Online Access: | http://tg.chinaoils.cn/ch/reader/create_pdf.aspx?file_no=20230313&year_id=2023&quarter_id=3&falg=1 |
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