The thermodynamics study on the dissolution mechanism of cellobiose in NaOH/urea aqueous solution

被引：10

作者：

Zhao, Xiaojun ^{[1
]}

Chen, Yuting ^{[1
]}

Jiang, Xinwei ^{[1
]}

Shang, Yuhan ^{[1
]}

Zhang, Long ^{[1
]}

Gong, Qing ^{[1
]}

Zhang, Haibo ^{[1
]}

Wang, Zhiyong ^{[1
]}

Zhou, Xiaohai ^{[1
,2
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

[2] Ankang Univ, Dept Chem & Chem Engn, Ankang, Shanxi, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2013年 / 111卷 / 01期

关键词：

Solution enthalpy; Cellobiose; Urea solution; NaOH/urea aqueous solution; HYDRATED HYDROXIDE IONS; MOLECULAR-DYNAMICS; LIQUID WATER; TRANSPORT MECHANISM; LOW-TEMPERATURES; UREA SOLUTIONS; HYDROGEN-BOND; CELLULOSE; SOLVATION; FIBERS;

D O I：

10.1007/s10973-012-2217-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

NaOH/urea aqueous solution is a novel, green solvent for cellulose. To explain why cellulose just be dissolved in this solvent under -13 A degrees C, we studied and discussed the dissolving process of cellobiose in water, urea solution, NaOH solution and NaOH/urea aqueous solution. Dissolving cellobiose in water and the urea solution absorb heat, which is an entropy-driven process. Dissolving cellobiose in NaOH solution and mixed NaOH/urea solution is exothermic, which is an enthalpy-driven process. OH- plays an important role in the dissolving process by forming a hydrogen-bonding complex. From the thermodynamic point of view, negative entropy can well interpret why cellulose must be dissolved in cold NaOH/urea aqueous solution.

引用

页码：891 / 896

页数：6

共 50 条

[1] The thermodynamics study on the dissolution mechanism of cellobiose in NaOH/urea aqueous solution
Xiaojun Zhao
Yuting Chen
Xinwei Jiang
Yuhan Shang
Long Zhang
Qing Gong
Haibo Zhang
Zhiyong Wang
Xiaohai Zhou
Journal of Thermal Analysis and Calorimetry, 2013, 111 : 891 - 896
[2] Dissolution of cellulose in aqueous NaOH/urea solution: role of urea
Xiong, Bi
Zhao, Pingping
Hu, Kai
Zhang, Lina
Cheng, Gongzhen
CELLULOSE, 2014, 21 (03) : 1183 - 1192
[3] Dissolution of cellulose in aqueous NaOH/urea solution: role of urea
Bi Xiong
Pingping Zhao
Kai Hu
Lina Zhang
Gongzhen Cheng
Cellulose, 2014, 21 : 1183 - 1192
[4] Dissolution of Wheat Straw with Aqueous NaOH/Urea Solution
Li, Xiaobao
Ye, Judi
Chen, Jianqiang
Yu, Ji
Ding, Minmin
Hong, Jianguo
FIBERS AND POLYMERS, 2015, 16 (11) : 2368 - 2374
[5] Dissolution of wheat straw with aqueous NaOH/Urea solution
Xiaobao Li
Judi Ye
Jianqiang Chen
Ji Yu
Minmin Ding
Jianguo Hong
Fibers and Polymers, 2015, 16 : 2368 - 2374
[6] Neutron total scattering investigation on the dissolution mechanism of trehalose in NaOH/urea aqueous solution
Qin, Hong
Ma, Changli
Gartner, Sabrina
Headen, Thomas F.
Zuo, Taisen
Jiao, Guisheng
Han, Zehua
Imberti, Silvia
Han, Charles C.
Cheng, He
STRUCTURAL DYNAMICS-US, 2021, 8 (01):
[7] Effects of polymorphs on dissolution of cellulose in NaOH/urea aqueous solution
Chen, Xiong
Chen, Jinghuan
You, Tingting
Wang, Kun
Xu, Feng
CARBOHYDRATE POLYMERS, 2015, 125 : 85 - 91
[8] Direct dissolution of cellulose in NaOH/thiourea/urea aqueous solution
Jin, Huajin
Zha, Chunxi
Gu, Lixia
CARBOHYDRATE RESEARCH, 2007, 342 (06) : 851 - 858
[9] Quantitative NMR investigation on the low-temperature dissolution mechanism of chitin in NaOH/urea aqueous solution
Ru, Geying
Luo, Huan
Liang, Xinmiao
Wang, Liying
Liu, Chaoyang
Feng, Jiwen
CELLULOSE, 2015, 22 (04) : 2221 - 2229
[10] Quantitative NMR investigation on the low-temperature dissolution mechanism of chitin in NaOH/urea aqueous solution
Geying Ru
Huan Luo
Xinmiao Liang
Liying Wang
Chaoyang Liu
Jiwen Feng
Cellulose, 2015, 22 : 2221 - 2229

← 1 2 3 4 5 →