N-methyl-2-pyrrolidonium-based Br?nsted-Lewis acidic ionic liquids as catalysts for the hydrolysis of cellulose

被引：0

作者：

Zheng Zhao ^{[1
,2
]}

Na Li ^{[1
,2
]}

Abdul Waheed Bhutto ^{[3
]}

Ahmed AAbdeltawab ^{[4
]}

Salem SAlDeyab ^{[4
]}

Guangqing Liu ^{[1
,2
]}

Xiaochun Chen ^{[1
,2
]}

Guangren Yu ^{[1
,2
]}

机构：

[1] Beijing Key Laboratory of Membrane Science and Technology

[2] College of Chemical Engineering, Beijing University of Chemical Technology

[3] Department of Chemical Engineering, Mehran University of Engineering and Technology

[4] Petrochemicals Research Chair, College of Science, King Saud University

来源：

Science China(Chemistry) | 2016年 / 05期

关键词：

cellulose; hydrolysis; ionic liquid; density functional theory;

D O I：

暂无

中图分类号：

O636.11 []; O645.1 [液态溶液];

学科分类号：

070305 ; 080501 ; 081704 ; 070304 ;

摘要：

We experimentally studied the catalytic performances of a series of Br?nsted-Lewis acidic N-methyl-2-pyrrolidonium metal chlorides（[Hnmp]Cl/MClx, where M=Fe, Zn, Al, or Cu） for the hydrolysis of microcrystalline cellulose（MCC） and cotton to produce reducing sugar. A variety of factors, such as temperature, time, ionic liquid（IL） species, IL dosage, and the concentration of the metal chloride were investigated. [Hnmp]Cl/FeCl3 presented the best hydrolysis performance, affording a 98.8% yield of total reducing sugar from MCC（1 h, 100 °C, 0.1 g MCC, 0.2 g acidic IL, 2.0 g [Bmim]Cl as solvent）, which is better than or comparable to results previously obtained with other –SO3H functionalized acidic ILs. The hydrolysis performances of [Hnmp]Cl/MClx were rationalized using density functional theory calculations, which indicated that interactions between the metal chlorides and the cellulose, including charge-transfer interactions are important in the hydrolysis of cellulose and degradation of glucose. This work shows that Br?nsted-Lewis acidic ILs are potential catalysts for the hydrolysis of cellulose to produce sugar.

引用

页码：564 / 570

页数：7