Preparation of amphiphilic mesoporous carbon-based solid acid from kraft lignin activated by phosphoric acid and its catalytic performance for hydration of α-pinene
Preparation of amphiphilic mesoporous carbon-based solid acid from kraft lignin activated by phosphoric acid and its catalytic performance for hydration of α-pinene
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磷酸活化硫酸盐木质素制备两亲性介孔碳基固体酸及其对α-蒎烯水合的催化性能
DOI：
10.15376/biores.14.2.4284-4303
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发表时间：
2019-04
期刊：
影响因子：
1.5
通讯作者：
Liu Zuguang
中科院分区：
文献类型：
--
作者：
Xie Junkang;Han Qiaoning;Feng Bo;Liu Zuguang
以硫酸盐木质素为原料，经磷酸处理碳化，制备了具有高比表面积的两亲性中孔碳基固体酸（lx - so3h）。结果表明，在木质素炭化过程中，通过调节磷酸用量，可以有效地控制催化剂的比表面积、孔结构和两亲性。在最佳制备条件下，催化剂的比表面积为282.2 m2/g，孔体积为0.26 cm3/g，平均孔径为6.73 nm。采用气相色谱法对该固体酸催化剂在α-蒎烯水化反应中的性能进行了表征。水化反应中α-蒎烯的转化率和α-松油醇的收率分别高达95.3%和55.3%；这些结果比用硫酸和市售固体酸催化剂（如Amberlyst-15）的其他水化方法的结果要好。经过5次循环后，α-蒎烯的转化率从95.3%下降到92.6%，α-松油醇的收率从55.3%下降到47.6%。由此可见，硫酸盐木质素炭化制备的固体酸催化剂作为α-蒎烯水化剂具有较大的潜力。
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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影响因子：
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作者：
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DOI：
10.1016/j.endend.2010.04.044
发表时间：
2010-04
期刊：
Journal of End-to-end-testing
影响因子：
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作者：
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通讯作者：
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