CAJ | 학술논문

研究了Br?nsted-Lewis复合催化体系催化蔗糖脱水制备5-羟甲基糠醛,考察了反应条件对5-羟甲基糠醛收率的影响,最佳反应条件为：蔗糖2.0 g,复合催化体系HCl-CrCl3(质量比5：1)0.8 g,二甲基亚砜20 mL,反应时间30 min,反应温度200℃。在上述较佳反应条件下,蔗糖转化率为100%,5-羟甲基糠醛的收率达72.7%。此外,CrCl3对产物5-羟甲基糠醛具有良好的稳定性,在一定程度上可避免产物继续发生水合/脱羧反应而生成甲酸和乙酰丙酸。
연구료Br?nsted-Lewis복합최화체계최화자당탈수제비5-간갑기강철,고찰료반응조건대5-간갑기강철수솔적영향,최가반응조건위：자당2.0 g,복합최화체계HCl-CrCl3(질량비5：1)0.8 g,이갑기아풍20 mL,반응시간30 min,반응온도200℃。재상술교가반응조건하,자당전화솔위100%,5-간갑기강철적수솔체72.7%。차외,CrCl3대산물5-간갑기강철구유량호적은정성,재일정정도상가피면산물계속발생수합/탈최반응이생성갑산화을선병산。
The preparation of 5-hydroxymethylfurfural ( HMF ) from sucrose was studied in the presence of Br nsted-Lewis composite catalytic system. The effects of reaction conditions on the yield of 5-hydroxymethylfurfural were examined. The optimal reaction conditions were obtained as follows: sucrose 2. 0 g, composite catalytic system HCl-CrCl3(mass ratio 5:1) 0. 8 g , dimethyl sulfoxide 20 mL, reaction time 30 min and reaction temperature 200 ℃. Under the above conditions, the conversion of sucrose was 100 %, and the yield of 5-hydroxymethylfurfural reached 72. 7 %. Moreover, CrCl3 had a good stability on the product 5-hydroxymethylfurfural. It could avoid 5-hydroxymethylfurfural over-reacting to form formic acid and levulinic acid by the hydration/decarboxylation reaction to a certain extent.