一步热解活化法制备纳米木质素基多孔炭材料

doi:10.16085/j.issn.1000-6613.2021-1219

化工进展 ›› 2022, Vol. 41 ›› Issue (5): 2582-2592.DOI: 10.16085/j.issn.1000-6613.2021-1219

一步热解活化法制备纳米木质素基多孔炭材料

王鲁元¹^,²(), 金春江¹^,²^,³, 陈惠敏³, 程星星⁴, 安东海³(), 张兴宇², 孙荣峰¹^,², 耿文广¹^,²

^1.山东省科学院能源研究所，山东济南 250014
^2.齐鲁工业大学能源与动力工程学院，山东济南 250014
^3.昌吉学院，新疆昌吉 831100
^4.山东大学能源与动力工程学院，山东济南 250061

收稿日期:2021-06-10 修回日期:2021-10-07 出版日期:2022-05-05 发布日期:2022-05-24
通讯作者: 安东海
作者简介:王鲁元（1988—），男，博士，主要研究方向为VOCs环保治理及炭材料、脱硫脱硝催化剂的制备。E-mail：luyuanwang1988@126.com。
基金资助:
国家自然科学基金(51906130);山东省自然科学基金(ZR2019BEE053);山东省科学院青年基金(2020QN009);山东省重点实验室能源碳减排技术与资源化利用实验室项目(ECRRU201804);新疆教育厅新疆维吾尔自治区高校科研计划(XJEDU2019Y025);齐鲁工业大学（山东省科学院）科教产项目（2020KJC~ZD12）

Preparation of nano-lignin-based porous carbon materials by one-step pyrolysis activation method

WANG Luyuan¹^,²(), JIN Chunjiang¹^,²^,³, CHEN Huimin³, CHENG Xingxing⁴, AN Donghai³(), ZHANG Xingyu², SUN Rongfeng¹^,², GENG Wenguang¹^,²

^1.Energy Research Institute of Shandong Academy of Sciences, Jinan 250014, Shandong, China
^2.School of Energy and Power Engineering, Qilu University of Technology, Jinan 250014, Shandong, China
^3.Changji University, Changji 831100, Xinjiang, China
^4.School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China

Received:2021-06-10 Revised:2021-10-07 Online:2022-05-05 Published:2022-05-24
Contact: AN Donghai

摘要/Abstract

摘要：

以木质素为原料，采用管式炉反应器通过一步热解-半活化法获得木质素基多孔炭材料（LPC）。采用氮吸附（BET）、扫描电镜（SEM）和傅里叶变换红外光谱（FTIR）对多孔炭材料的物化性质进行分析。在900℃的恒定炭化温度下，CO₂体积分数为6%、水蒸气体积分数约为20%时，LPC-C₆S₂₀表面具有良好的纳米结构，并且总孔容和比表面积分别达到0.77cm³/g和1497.51m²/g，活化气氛促进了多孔炭材料颗粒趋于均匀和微孔、中孔的形成。LPC样品含有—OH、C—H、C＝C、C—O、C＝O、CO—C、C—N、C＝N等丰富的表面官能团。随着活化剂浓度的变化，这些官能团保持相对稳定。因此，通过该方法获得的样品具有良好的纳米结构，具有较大的孔容、比表面积和表面官能团。

关键词: 木质素, 一步热解, 多孔炭, 孔结构

Abstract:

The lignin-based porous carbon material (LPC) was obtained by using lignin as raw material and tube furnace reactor through a one-step pyrolysis-activation method. Nitrogen adsorption (BET), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze the physical and chemical properties of porous carbon material. At a constant carbonization temperature of 900℃ with CO₂ concentration of 6% and water vapor concentration of about 20%, the surface of LPC-C₆S₂₀ had a good nanostructure, and the total pore volume and specific surface area reached 0.77cm³/g and 1497.51m²/g, respectively. The activation atmosphere promoted the uniformity of porous carbon material particles and the formation of micropores and mesopores. The LPC sample contained abundant surface functional groups such as —OH, C—H, C＝C, C—O, C＝O, CO—C, C—N and C＝N, etc. As the concentration of the activator changed, these functional groups remained relatively stable. Therefore, the sample obtained by this method had a good nanostructure with a larger pore volume, specific surface area and functional groups.

Key words: lignin, one step pyrolysis, porous carbon, pore structure

中图分类号:

王鲁元, 金春江, 陈惠敏, 程星星, 安东海, 张兴宇, 孙荣峰, 耿文广. 一步热解活化法制备纳米木质素基多孔炭材料[J]. 化工进展, 2022, 41(5): 2582-2592.

WANG Luyuan, JIN Chunjiang, CHEN Huimin, CHENG Xingxing, AN Donghai, ZHANG Xingyu, SUN Rongfeng, GENG Wenguang. Preparation of nano-lignin-based porous carbon materials by one-step pyrolysis activation method[J]. Chemical Industry and Engineering Progress, 2022, 41(5): 2582-2592.

图/表 12

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样品	总孔容/cm³·g^-1	微孔孔容/cm³·g^-1	比表面积 /m²·g^-1	微孔比表面积/m²·g^-1	平均孔径/nm
LPC-C₂S₂₀	0.50	0.43	1081.89	1004.93	1.85
LPC-C₄S₂₀	0.64	0.46	1344.80	1169.50	1.91
LPC-C₆S₂₀	0.77	0.50	1497.51	1250.21	2.06
LPC-C₈S₂₀	0.79	0.51	1294.81	1026.92	2.45

样品	总孔容/cm³·g^-1	微孔孔容/cm³·g^-1	比表面积 /m²·g^-1	微孔比表面积/m²·g^-1	平均孔径/nm
LPC-C₂S₂₀	0.50	0.43	1081.89	1004.93	1.85
LPC-C₄S₂₀	0.64	0.46	1344.80	1169.50	1.91
LPC-C₆S₂₀	0.77	0.50	1497.51	1250.21	2.06
LPC-C₈S₂₀	0.79	0.51	1294.81	1026.92	2.45

样品	总孔容/cm³·g^-1	微孔孔容/cm³·g^-1	比表面积 /m²·g^-1	微孔比表面积/m²·g^-1	平均孔径/nm
LPC-C₆S₀	0.51	0.36	992.52	856.67	2.04
LPC-C₆S₁₀	0.70	0.37	1，295.02	749.60	2.60
LPC-C₆S₂₀	0.77	0.50	1497.51	1250.21	2.06
LPC-C₆S₃₀	0.81	0.44	1409.03	1094.35	2.30

样品	总孔容/cm³·g^-1	微孔孔容/cm³·g^-1	比表面积 /m²·g^-1	微孔比表面积/m²·g^-1	平均孔径/nm
LPC-C₆S₀	0.51	0.36	992.52	856.67	2.04
LPC-C₆S₁₀	0.70	0.37	1，295.02	749.60	2.60
LPC-C₆S₂₀	0.77	0.50	1497.51	1250.21	2.06
LPC-C₆S₃₀	0.81	0.44	1409.03	1094.35	2.30

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一步热解活化法制备纳米木质素基多孔炭材料

Preparation of nano-lignin-based porous carbon materials by one-step pyrolysis activation method

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