关于在钙铈基催化剂上利用碳酸丙烯酯和甲醇生产碳酸二甲酯的研究

Q3 Energy 燃料化学学报 Pub Date : 2024-04-01 DOI:10.1016/S1872-5813(23)60394-9

Jiong GUO , Jinhai ANG , Yilin SHI , Ning ZHAO , Fukui XIAO , Xindong JIANG

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引用次数: 0

摘要

通过 XRD、N2 吸附-解吸、FT-IR、XPS 和 CO2-TPD 对溶胶-凝胶法制备的不同 Ca:Ce 摩尔比的钙铈基催化剂进行了表征，并评估了以碳酸丙烯酯（PC）和甲醇为原料合成碳酸二甲酯（DMC）的活性。结果表明，更多的表面氧空位和更适中的碱性位点有利于甲醇的活化，从而提高了催化活性。在反应时间为 2 小时、反应温度为 40 °C、甲醇与碳酸丙烯酯的摩尔比为 15:1、催化剂用量为碳酸丙烯酯用量的 4% 的条件下，PC 的转化率为 91.1%，而 0.9CaCe 对 DMC 的选择性为 91.7%。

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Investigation on production of dimethyl carbonate from propylene carbonate and methanol on calcium cerium-based catalysts

Calcium cerium-based catalysts with different Ca:Ce molar ratio prepared by sol-gel method were characterized by XRD, N₂ adsorption-desorption, FT-IR, XPS and CO₂-TPD, and evaluated the activity for dimethyl carbonate (DMC) synthesis from propylene carbonate (PC) and methanol. The results indicated that more surface oxygen vacancies and more moderate basic sites are beneficial for methanol activation and thus leading to better catalytic activity. The PC conversion was 91.1% with DMC selectivity of 91.7% over 0.9CaCe under the reaction conditions-reaction time of 2 h, reaction temperature of 40 °C, methanol to propylene carbonate molar ratio of 15:1 and catalyst amount of 4% relative to the amount of PC.

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来源期刊

燃料化学学报 Chemical Engineering-Chemical Engineering (all)

CiteScore

2.80

自引率

0.00%

发文量

5825

期刊介绍： Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.