Numerical Optimization of the Abies Ethanol Lignin Sulfation Process with Sulfamic Acid in 1,4-Dioxane Medium in the Presence of Urea

被引：12

作者：

Kazachenko, Aleksandr S. ^{[1
]}

Vasilyeva, Natalya Yu ^{[1
,2
]}

Sudakova, Irina G. ^{[1
]}

Levdansky, Vladimir A. ^{[1
]}

Lutoshkin, Maxim A. ^{[1
]}

Kuznetsov, Boris N. ^{[1
,2
]}

机构：

[1] FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, Krasnoyarsk, Russia

[2] Siberian Fed Univ, Krasnoyarsk, Russia

来源：

JOURNAL OF SIBERIAN FEDERAL UNIVERSITY-CHEMISTRY | 2020年 / 13卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

abies ethanol lignin; sulfation; sulfamic acid; urea; 1,4-dioxane; sulfated ethanol lignin; process optimization; MOLECULAR-WEIGHT LIGNINS; ORGANOSOLV;

D O I：

10.17516/1998-2836-0178

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The process of abies ethanol lignin sulfation with sulfamic acid in 1,4-dioxane medium in the presence of urea was optimized by calculation methods. The influence of such factors, as the ratio of lignin/sulfating complex (L/SC), temperature and time of the sulfation process on the sulfur content in the resulting sulfated ethanol lignin and its yield, has been established. The variance analysis of the obtained mathematical models testifies their good predictive properties. The optimal conditions of abies ethanol lignin sulfation process, which provide the formation of water-soluble sulfated lignin with a high yield (to 100 % wt.) and sulfur content (up to 7.9 % wt.), have been established. They are: temperature of 95-100 degrees C, the ratio L/SC 1:2,3-1:2:9 and the time of the process 119-137 minutes.

引用

页码：232 / 246

页数：15

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