生物质低温碱热化学分离木质素联产高纯氢和有机酸

刘郭洁; 王泽琦; 吴可荆; 鲁厚芳; 于洋洋; 陈超; 梁斌

doi:10.12434/j.issn.2097-2547.20250308

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生物质低温碱热化学分离木质素联产高纯氢和有机酸

更新时间：2025-12-25

- 生物质低温碱热化学分离木质素联产高纯氢和有机酸
- Separation of lignin and co-production of high-purity H₂ and organic acids by low-temperature alkaline thermochemical reaction of biomass
- 低碳化学与化工 2025: 1-11.
- 作者机构：
  
  1.天府永兴实验室二氧化碳资源化利用研究所，四川成都 610213
  2.四川大学化学工程学院，四川成都 610065
  3.四川大学新能源与低碳技术研究院，四川成都 610207
- 作者简介：
  
  刘郭洁（1997—），博士，研究方向为生物质资源化利用，E-mail：liuguojie1616@126.com。
  鲁厚芳（1970—），博士，教授，研究方向为生物质化学品和能源技术开发，E-mail：luhouf@scu.edu.cn。
- 基金信息：
  
  中央引导地方发展科技项目(2024ZYD0150)
- DOI：10.12434/j.issn.2097-2547.20250308
  中图分类号： TQ424.1;X703
- 收稿：2025-07-19，
  
  修回：2025-08-19，
  
  网络出版：2025-12-23，
- 稿件说明：
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刘郭洁,王泽琦,吴可荆等.生物质低温碱热化学分离木质素联产高纯氢和有机酸[J].低碳化学与化工,

LIU Guojie,WANG Zeqi,WU Kejing,et al.Separation of lignin and co-production of high-purity H₂ and organic acids by low-temperature alkaline thermochemical reaction of biomass[J].Low-Carbon Chemistry and Chemical Engineering,
刘郭洁,王泽琦,吴可荆等.生物质低温碱热化学分离木质素联产高纯氢和有机酸[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250308.

LIU Guojie,WANG Zeqi,WU Kejing,et al.Separation of lignin and co-production of high-purity H₂ and organic acids by low-temperature alkaline thermochemical reaction of biomass[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250308.

摘要

碱热化学（Alkaline Thermochemical，ATC）技术能够分级转化生物质三大组分（纤维素、半纤维素和木质素），将该技术应用于真实生物质体系，有望提升原料的综合利用效率。采用低温ATC技术分离木质素组分，同时将纤维素和半纤维素一步转化为高纯度H

和有机酸，探究了碱种类和工艺参数对分离和转化效果的影响，并评估了该技术对不同种类生物质的适用性。结果表明，185 ℃为NaOH体系下竹渣低温ATC的优选温度，此时木质素回收率为73.9%，H

纯度高于96.0%（体积分数），总有机酸（乙酸、乙醇酸、乳酸和丁二酸）产量可达267 g/kg （1 kg竹渣的产量）。KOH因碱性和吸水性较NaOH更强，低温ATC的优选温度为170 ℃。从不同生物质原料中分离的木质素均表现为碱木质素化学结构特征，证明低温ATC技术具有较好的底物适用性和可推广性。本研究可为生物质的高效转化和资源化利用提供新思路。

Abstract

Alkaline thermochemical (ATC) technology can hierarchically convert the three major components of biomass (cellulose

hemicellulose and lignin)

and applying the technology in real biomass is expected to improve the comprehensive utilization efficiency of feedstocks. Low-temperature ATC was employed to separate lignin and simultaneously convert cellulose and hemicellulose into high-purity H

and organic acids. The effects of alkali types and process parameters on separation and conversion efficiency were investigated

and the applicability of this technology to various types of biomass was evaluated. The results indicate that 185 ℃ is the favorable temperature for low-temperature ATC of bamboo with NaOH system with the lignin recovery rate o

f 73.9%

purity higher than 96.0% (volume fraction) and the total organic acids (including acetic acid

glycolic acid

lactic acid and succinic acid) production reaching 267 g/kg (1 kg bamboo as reactant). KOH

which has stronger alkalinity and hygroscopicity than NaOH

has a favorable temperature of 170 ℃ for low-temperature ATC. Lignin separated from different feedstocks exhibits chemical structural characteristics similar to those of alkaline lignin

demonstrating the suitability and scalability of low-temperature ATC technology for various substrates. This study can provide new insights into the efficient conversion and utilization of biomass.

关键词

Keywords

references

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