Mild Hydrogenation of Lignin Depolymerization Products Over Ni/SiO2 Catalyst
Mild Hydrogenation of Lignin Depolymerization Products Over Ni/SiO2 Catalyst
复制标题
Ni/SiO2 催化剂上木质素解聚产物的轻度加氢
DOI：
10.1021/acs.energyfuels.7b00934
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发表时间：
2017
期刊：
影响因子：
5.3
通讯作者：
Wang Chenguang
中科院分区：
文献类型：
--
作者：
Shu Riyang;Xu Ying;Chen Pengru;Ma Longlong;Zhang Qi;Zhou Lie;Wang Chenguang
人们提出了许多有效的方法来实现木质素的解聚，但在温和条件下有效利用木质素解聚产物仍然是一个很大的挑战。将它们转化为热性能和化学性能稳定的产品是必要的步骤。提出了一种以Ni/SiO2为催化剂的木质素解聚产物温和加氢工艺。模型化合物2，3-二氢苯并呋喃表现出良好的反应效果。在130 °C时，转化率接近100%，产物2-乙基环己醇的选择性达到94.6%。木质素解聚产物也有较好的加氢效果，不仅有不饱和基团的加氢，而且有β-O-4键的断裂。产物具有低热值和低分子量，热性能和化学性能稳定。该处理有利于抑制缩合反应的发生，有利于进一步的催化转化。
Many efficient methods have been proposed to realize lignin depolymerization, while effective usage of lignin depolymerization products at mild conditions is still a big challenge. Conversion of them to stable products in thermal and chemical properties is a necessary step. Herein, a mild hydrogenation process of lignin depolymerization products over Ni/SiO2 catalyst was proposed. Model compound of 2,3-dihydrobenzofuran exhibited a good reaction result. Nearly 100% conversion was obtained at 130 °C, and the selectivity of 2-ethylcyclohexanol product reached 94.6%. The lignin depolymerization products also had a good hydrogenation result, in which not only the hydrogenation of unsaturated groups but also the cleavage of β-O-4 bonds occurred. Stable products in thermal and chemical properties were formed, which possessed high heated value and low molecular weight. This treatment is conducive to suppressing the occurrence of condensation and favorable for the further catalytic conversion.