苯甲醛
催化作用
化学
乙二胺
硫酸
产量(工程)
乙二醇
胺化
缩醛
有机化学
丙醛
核化学
醛
材料科学
冶金
作者
Wenzhu Liu,Ruike Guo,Guanmin Peng,Dulin Yin
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-04-25
卷期号:12 (9): 1462-1462
被引量:7
摘要
Through the amination of oxidized activated carbon with ethylenediamine and then the adsorption of sulfuric acid, a strong carbon-based solid acid catalyst with hydrogen sulfate (denoted as AC-N-SO4H) was prepared, of which the surface acid density was 0.85 mmol/g. The acetalization of benzaldehyde with ethylene glycol catalyzed by AC-N-SO4H was investigated. The optimized catalyst dosage accounted for 5 wt.% of the benzaldehyde mass, and the molar ratio of glycol to benzaldehyde was 1.75. After reacting such mixture at 80 °C for 5 h, the benzaldehyde was almost quantitatively converted into acetal; the conversion yield was up to 99.4%, and no byproduct was detected. It is surprising that the catalyst could be easily recovered and reused ten times without significant deactivation, with the conversion yield remaining above 99%. The catalyst also exhibited good substrate suitability for the acetalization of aliphatic aldehydes and the ketalization of ketones with different 1,2-diols.
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