Carbon Modification of Nickel Catalyst for Depolymerization of Oxidized Lignin to Aromatics
Carbon Modification of Nickel Catalyst for Depolymerization of Oxidized Lignin to Aromatics
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DOI：
10.1021/acscatal.7b03475
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发表时间：
2018-01
期刊：
影响因子：
12.9
通讯作者：
Min Wang;Xiaochen Zhang;Hongji Li;Jianmin Lu;Meijiang Liu;Feng Wang
中科院分区：
文献类型：
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作者：
Min Wang;Xiaochen Zhang;Hongji Li;Jianmin Lu;Meijiang Liu;Feng Wang
木质素的催化还原是一种可持续发展的芳香化合物来源，其催化活性中心的电子结构决定了木质素的催化还原。本文报道了通过碳热还原Ni掺杂的层状双氢氧化物来制备碳改性的镍催化剂。木质素磺酸盐（LS）是来自纸浆工业的木质素资源，用作可再生碳前体。镍表面残碳改变了镍的3d电子分布，对木质素C-O键氢解生成芳烃具有高度选择性，氧化桦木木质素氢解生成芳烃的总质量收率为22wt%。
Catalytic valorization of lignin is a sustainable way to provide aromatics for the human society, which depends on the electronic structure of catalytic sites. We herein report the preparation of a carbon-modified nickel catalyst via carbothermal reduction of Ni-doped layered double hydroxides. Lignosulfonate (LS), a lignin resource from the pulp industry, was used as a renewable carbon precursor. The carbon residues in the nickel surface layer changed the 3d electron distribution of nickel, which was highly selective for the C–O bond hydrogenolysis of lignin into aromatics, and 22 wt % total mass yields of aromatics were achieved from hydrogenolysis of oxidized birch lignin.