Sulfonated Sporopollenin as an Efficient and Recyclable Heterogeneous Catalyst for Dehydration of D-Xylose and Xylan into Furfural

被引:52
|
作者
Wang, Yantao [1 ]
Len, Thomas [2 ,3 ]
Huang, Youkui [3 ]
Taboada, Alberto Diego [3 ,4 ]
Boa, Andrew N. [3 ]
Ceballos, Claire [2 ]
Delbecq, Frederic [2 ]
Mackenzie, Grahame [3 ,4 ]
Len, Christophe [1 ]
机构
[1] Sorbonne Univ, UTC, Ctr Rech Royallieu, CS 60319, F-60203 Compiegne, France
[2] ESCOM, 1 Rue Reseau Jean Marie Buckmaster, F-60200 Compiegne, France
[3] Univ Hull, Dept Chem, Cottingham Rd, Kingston Upon Hull HU6 7RX, Yorks, England
[4] Sporomex Ltd, Newland Ave, Driffield YO25 6TX, England
来源
关键词
Furfural; D-Xylose; Xylan; Sporopollenin; Biphasic system; Microwave-aided dehydration; SOLID ACID; LYCOPODIUM-CLAVATUM; ION-EXCHANGE; MICROWAVE; MICROCAPSULES; DEPOLYMERIZATION; CONVERSION; DELIVERY; MODEL; WATER;
D O I
10.1021/acssuschemeng.6b01780
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The natural acidity of sporopollenin, the biopolymer coating the outer walls of pollen grains, was enhanced by the sulfonation of its surface. Modified sporopollenin displaying sulfonic acid groups has been prepared, characterized by elemental analysis, SEM, EDX, FTIR, and XPS, and tested as a heterogeneous catalyst in the dehydration of D-xylose and xylan to produce furfural. The optimal reaction conditions involve 10 wt % of sulfonated sporopollenin in the presence of 1.5 mmol of NaCl in a biphasic water-CPME system. When heated at 190 degrees C, the reaction affords furfural in a yield of 69% after 40 min under microwave irradiation. The time dependence of the dehydration and influence of temperature, pentose loading, and positive effect of chloride ions on the reaction rate are reported. It was found that the catalytic system, recharged with the pentose and solvent, could be recycled ten times without loss of performance. The transformation of xylan into furfural at 190 degrees C for SO min gave furfural in a yield of 37%.
引用
收藏
页码:392 / 398
页数:7
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