碱性木质素及其结构衍生物的热转化为多孔碳化材料。
Thermal conversion of alkaline lignin and its structured derivatives to porous carbonized materials.
机构信息
Institute of Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan.
出版信息
Bioresour Technol. 2011 May;102(10):6279-85. doi: 10.1016/j.biortech.2011.03.023. Epub 2011 Mar 15.
Alkaline lignin was thermally converted to microporous carbon in ca. 50% yield by heating up from room temperature to 900°C without activation process under flowing of an argon gas. The carbonized material prepared by heating up conditions of 1°C min(-1) showed 530 m(2)/g of the Brunauer-Emmett-Teller (BET) specific surface area, which increased to 740 m(2)/g after washing with water. Furthermore, alkaline lignin derivatives were structured as micron scale particles by micelle formation and polymer gelation techniques. Carbonization of the structured lignins could afford high porous materials having BET surface areas above 1000 m(2)/g without surface activation processes.
碱性木质素在不经过活化过程的情况下，于氩气流中从室温加热至 900°C，产率约为 50%，转化为微孔碳。以 1°C min(-1)的加热条件制备的碳化材料具有 530 m(2)/g 的 Brunauer-Emmett-Teller（BET）比表面积，经水洗后增加到 740 m(2)/g。此外，碱性木质素衍生物通过胶束形成和聚合物凝胶化技术构建为微米级颗粒。结构化木质素的碳化可以提供具有 1000 m(2)/g 以上 BET 比表面积的高多孔材料，而无需表面活化过程。
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