碳化
磷酸
催化作用
硫酸
介孔材料
硫酸盐法
木质素
活性炭
化学
比表面积
材料科学
有机化学
化学工程
牛皮纸
吸附
复合材料
工程类
作者
Junkang Xie,Qiaoning Han,Bo Feng,Zuguang Liu
出处
期刊:Bioresources
[BioResources]
日期:2019-04-15
卷期号:14 (2): 4284-4303
被引量:10
标识
DOI:10.15376/biores.14.2.4284-4303
摘要
An amphiphilic mesoporous carbon-based solid acid (LCx-SO3H) with high specific surface area was prepared from kraft lignin that was carbonized using a phosphoric acid treatment. It was found that the specific surface area, pore structure, and amphiphilic nature of the catalyst was effectively controlled through adjusting the phosphoric acid dosage during lignin carbonization. Under optimum preparation conditions, the specific surface area, pore volume, and average pore size of the catalyst were 282.2 m2/g, 0.26 cm3/g, and 6.73 nm, respectively. The performance of this solid acid catalyst for the hydration of α-pinene was characterized via gas chromatography analysis. The conversion of α-pinene and the yield of α-terpineol during hydration reaction were as high as 95.3% and 55.3%, respectively; these results were greater than the results from other hydration methods with sulfuric acid and commercially available solid acid catalysts (e.g., Amberlyst-15). After five recycles of the carbon-based solid acid without regeneration, conversion of α-pinene decreased from 95.3% to 92.6%, and the yield of α-terpineol decreased from 55.3% to 47.6%. These observations indicated that the solid acid catalyst derived from kraft lignin carbonization has high potential as a hydration agent for α-pinene.
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