首页> 外文期刊>Bulletin of the Korean Chemical Society >Preliminary Investigation of Organocatalyst Activity Based on C-Arylcalix[4]-2-MethyIresorcinarene Sulfonic Acid Materials for Biodiesel Production
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Preliminary Investigation of Organocatalyst Activity Based on C-Arylcalix[4]-2-MethyIresorcinarene Sulfonic Acid Materials for Biodiesel Production

机译:基于C-芳基碱的有机催化活性的初步研究[4] -2-甲状腺素烷酸材料进行生物柴油生产

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At present,biodiesel remains an untapped fuel source while crude oil reserves are being depleted.Extensive efforts are necessary to achieve efficient biodiesel production,but catalytic activity in methyl palmitate production remains unsatisfactory.In this study,we report the synthesis and organocatalyst activity of C-arylcalix[4]-2-methylresorcinarene sulfonic acids for biodiesel production.The presence of a methyl group on an aromatic ring is expected to disturb the intramolecular hydrogen bonds;thus,each hydroxyl group could be utilized for the catalytic process.C-arylcalix[4]-2-methylresorcinarene sulfonic acids were prepared from cyclocondensation and sulfonation reactions yielding compounds 1-6 at rates of 66.7%-86.6%.By evaluating the organocatalytic activity of the C-arylcahx[4]-2-methyhesorcinarene sulfonic acids,we found that 4 mol% of compound 5 exhibited the highest yield(97.8%)of methyl palmitate at 338 K for 6-h reaction time,which is remarkable.These findings show that C-arylcalix[4]-2-methylresorcinarene sulfonic acids are promising heterogeneous catalyst materials for biodiesel production.
机译:目前,生物柴油仍然是一种尚未开发的燃料来源,而原油储量正在枯竭。为了实现高效的生物柴油生产,需要进行大量的努力,但棕榈酸甲酯生产中的催化活性仍然不能令人满意。在这项研究中,我们报道了用于生物柴油生产的C-芳基杯[4]-2-甲基间苯二酚磺酸的合成和有机催化剂活性。芳香环上甲基的存在预计会干扰分子内氢键;因此,每个羟基都可以用于催化过程。通过环缩合和磺化反应制备C-芳基杯[4]-2-甲基间苯二酚磺酸,生成化合物1-6,产率为66.7%-86.6%。通过评估C-芳基LCAHX[4]-2-甲基间苯二酚磺酸的有机催化活性,我们发现化合物5的4 mol%在338 K下反应6 h时表现出最高的棕榈酸甲酯产率(97.8%),这是显著的。这些研究结果表明,C-芳基杯[4]-2-甲基间苯二酚磺酸是一种很有前途的多相催化生物柴油生产材料。

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