在不同温度下用活性碳支撑的镍催化剂还原木质素的水解聚合反应

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Communications Pub Date : 2024-01-01 DOI:10.1016/j.catcom.2023.106826

Tiesen Li , Boshi Wang , Pei Xu , Ying Wang , Chan Wang , Qingyan Cui , Yuanyuan Yue

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引用次数: 0

摘要

通过在不同温度下还原，获得了多种活性碳支撑镍（Ni/AC）催化剂，其中 Ni/AC-500 具有最小粒径的金属镍，有利于在催化剂表面暴露更多的活性位点，而且金属镍的含量合适，这意味着催化剂具有很高的氢解活性。此外，Ni/AC-500 的介孔体积最大，可促进木质素解聚过程中大分子的扩散。因此，与其他催化剂相比，Ni/AC-500 在木质素加氢解聚过程中表现出更高的木质素转化率以及液体生物油和单体的产量，但由于其较高的氢解活性，生物炭的产量较低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Hydrodepolymerization of lignin with Ni supported on active carbon catalysts reduced at different temperatures

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Hydrodepolymerization of lignin with Ni supported on active carbon catalysts reduced at different temperatures

Various Ni supported on active carbon (Ni/AC) catalysts were acquired by reduced at different temperatures, among which Ni/AC-500 possesses the smallest particle sizes of metallic Ni species, favoring to more active sites exposed on the catalyst surface, and the suitable content of metallic Ni⁰, implying the high hydrogenolysis activity obtained. Additionally, the highest mesoporous volume of Ni/AC-500 promotes the diffusion of large molecules from lignin depolymerization. Therefore, Ni/AC-500 exhibits the higher lignin conversion and yields of liquid bio-oil and monomers, but the lower yield of bio-char in lignin hydrodepolymerization due to its higher hydrogenolysis activity compared with other catalysts.

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.