EFFECT OF TRANSIENT ACID DIFFUSION ON PRETREATMENT HYDROLYSIS OF HARDWOOD HEMICELLULOSE

被引：20

作者：

TILLMAN, LM

LEE, YY

TORGET, R

机构：

[1] AUBURN UNIV,DEPT CHEM ENGN,AUBURN,AL 36849

[2] SOLAR ENERGY RES INST,GOLDEN,CO 80401

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 1990年 / 24-5卷

关键词：

acid catalyzed; Acid diffusivity; biomass size; hemicellulose hydrolysis; nonuniform acid concentration;

D O I：

10.1007/BF02920237

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Diffusivities of sulfuric acid in Aspen wood were experimentally determined at various diffusional temperatures and fitted to Arrhenius equations. These equations were subsequently incorporated into a theoretical model to establish the effect of transient acid concentration gradients within a solid substrate during acid-catalyzed hydrolysis of hemicellulose. Total xylose yield was found to decrease for increasing chip size, and this effect was intensified by increasing reaction temperature. Quantitative criteria were established for assessment of transient acid concentration effects upon xylose yield and reaction time at various reaction conditions. © 1990 Humana Press Inc.

引用

页码：103 / 113

页数：11