作者:A. L. Maksimov、A. I. Nekhaev、D. N. Ramazanov、Yu. A. Arinicheva、A. A. Dzyubenko、S. N. Khadzhiev
DOI:10.1134/s0965544111010117
日期:2011.1
xylose) in the presence of a number of heterogeneous acid catalysts has been studied. It has been shown that zeolite catalysts exhibit high activity in the formation of the acetone ketal of glucose in a flow system with the quantitative selectivity for the 1,2-product. The best catalyst is zeolite beta; in the presence of this zeolite and excess acetone, the yield is over 90% or, in the case of the structured
已经研究了在多种非均相酸催化剂存在下多元醇(甘油,木糖醇,木糖)的缩酮化反应。已经表明,沸石催化剂在流动系统中形成葡萄糖的丙酮缩酮方面具有高活性,并且对1,2-产物具有定量选择性。最好的催化剂是β沸石。在存在这种沸石和过量丙酮的情况下,收率超过90%,或者在结构化反应器的情况下,收率甚至超过98%。已经证明,基于沸石的体系可以催化木糖醇和木糖缩酮的形成。在过量丙酮存在下,收率可达50%。