蔗渣液水解加氢制备木糖醇

IF 1 4区工程技术 Q4 CHEMISTRY, APPLIED

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2022-01-01 DOI:10.2298/ciceq210721012c

Julieta Cerioni, M. Vallejos, F. Felissia, M. Area, N. Nichio, G. Santori

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引用次数: 1

摘要

采用磺化树脂对蔗渣水热处理废液进行了多相催化研究。此外，还比较了以硫酸为均相催化剂的常规方法的反应结果。多相催化适用于蔗渣水热液在温和条件下(100℃，6 h)水解，由于糠醛的生成导致木糖选择性下降，木糖产率最高可达82%。这种富含木糖的液体在100?C和3mpa的氢气压力，采用Ni/?在催化剂与木糖质量比为0.5的条件下，-Al2O3对木糖的总转化率为100%。两步法(水解和加氢)的多相催化是蔗渣水热废液生产木糖醇的一种很好的替代方法，因为材料可以很容易地在几个反应循环中分离和重复使用。

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Obtaining xylitol by hydrolysis-hydrogenation of liquors derived from sugarcane bagasse

This work presents the study of heterogeneous catalysis of sugarcane bagasse hydrothermal treatment spent liquors using a sulfonated resin. Besides, results were compared with those obtained by a conventional route using sulfuric acid as a homogeneous catalyst. Heterogeneous catalysis is suitable for the hydrolysis of sugarcane bagasse hydrothermal liquors under mild conditions (100 ?C and 6 h). The obtained maximum xylose yield was 82% due to furfural formation, which causes a xylose selectivity drop. The hydrogenation of this xylose-rich liquor at 100?C and 3 MPa of hydrogen pressure employing a supported Ni/?-Al2O3 produced the total conversion of xylose with a selectivity towards xylitol of 100% by using a catalyst to xylose mass ratio of 0.5. Heterogeneous catalysis in a two-step route (hydrolysis and hydrogenation) constitutes an outstanding alternative to produce xylitol from sugarcane bagasse hydrothermal spent liquors since materials can be easily separated and reused in several reaction cycles.

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来源期刊

Chemical Industry & Chemical Engineering Quarterly CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

3.3 months

期刊介绍： The Journal invites contributions to the following two main areas: • Applied Chemistry dealing with the application of basic chemical sciences to industry • Chemical Engineering dealing with the chemical and biochemical conversion of raw materials into different products as well as the design and operation of plants and equipment. The Journal welcomes contributions focused on: Chemical and Biochemical Engineering [...] Process Systems Engineering[...] Environmental Chemical and Process Engineering[...] Materials Synthesis and Processing[...] Food and Bioproducts Processing[...] Process Technology[...]