三水碳酸镁催化酚醛聚合制备多孔炭及其性能研究

靳宝庆; 王余莲; 欧昌锐; 李帅; 赵旭; 朱明; 李闯; 袁志刚

doi:10.13779/j.cnki.issn1001-0076.2020.02.018

三水碳酸镁催化酚醛聚合制备多孔炭及其性能研究

1.
沈阳理工大学材料科学与工程学院，沈阳 110159

2.
矿物加工科学与技术国家重点实验室，北京 100160

3.
湖南大学材料科学与工程学院，长沙 410082

基金项目:
国家自然科学基金(51804200)；矿物加工科学与技术国家重点试验室开放基金资助(BGRIMM-KJSKL-2019-14)；辽宁省自然科学基金博士启动基金(20180540104)，辽宁省教育厅科学研究经费项目(LG201927)；辽宁省大学生创新创业训练计划(201810144041)

详细信息

通讯作者: 王余莲(1986-), 女, 湖南衡阳人, 博士, 副教授, 主要从事矿物材料的制备及应用研究

中图分类号: TQ424

收稿日期: 2019-12-16

刊出日期: 2020-04-25

Preparation and Property of Porous Carbon with Phenolic Polymerization Catalyzed by Hydrated Magnesium Carbonate

1.
School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China

2.
State Key Laboratory of Mineral Processing, Beijing 100160, China

3.
School of Materials Science and Engineering, Hunan University, Changsha 410082, China

More Information

Corresponding author: WANG Yulian

Received Date: 16 December 2019

Publish Date: 25 April 2020

摘要

摘要:
利用水合碳酸镁催化功能及易分解特性，实现间苯二酚-甲醛体系的快速凝胶，通过炭化得到孔隙发达，比表面积大的整体式多孔炭(MCM-Mg)。系统研究了原料浓度、催化剂用量、反应温度、反应时间、炭化温度以及炭化时间工艺等因素对多孔炭性能的影响。结果表明，适宜的制备条件是反应温度85℃、反应时间0.5 h、间苯二酚质量3 g、催化剂用量3 g，炭化温度900℃，炭化时间1.5 h，获得密度为1.23 g/cm³、气孔率为39.71%、收率为29.07%、比表面积为193.475 m²/g，平均孔径为22.696 nm，抗压强度为25.68 Mpa的多孔炭。该工艺具有反应时间短、成本低廉和绿色环保等优点。
- 多孔炭 /
- 水合碳酸镁 /
- 酚醛树脂
Abstract:
The rapid gelation of the resorcinol-formaldehyde system was realized by the catalytic function and easy-decomposability of hydrated magnesium carbonate, and the monolithic porous carbon (MCM-Mg) with developed pores and large specific surface area was obtained by carbonization. The effects of raw material concentration, catalyst dosage, reaction temperature, reaction time, carbonization temperature and carbonization time on the properties of porous carbon were systematically studied. The results showed that the suitable preparation conditions were reaction temperature of 85℃, reaction time of 0.5 h, resorcinol mass of 3 g, catalyst dosage of 3 g, carbonization temperature of 900℃, carbonization time of 1.5 h. Under the optimum conditions, the porous carbon could be obtained with the density of 1.23 g/cm³, the porosity of 39.71%, the yield of 29.07%, the specific surface area of 193.475 m²/g, the average pore size of 22.696 nm, the compressive strength of 25.68 Mpa. The process has the advantages of short reaction time, low cost and environmental protection.
- porous carbon /
- hydrated magnesium carbonate /
- phenolic resin

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图 1 反应时间对气孔率和收率的影响

Figure 1.

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图 2 反应温度对气孔率和收率的影响

Figure 2.

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图 3 催化剂用量对气孔率和密度的影响

Figure 3.

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图 4 间苯二酚质量对气孔率和密度的影响

Figure 4.

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图 5 炭质前驱体实物图

Figure 5.

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图 6 炭化温度对气孔率和收率的影响

Figure 6.

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图 7 炭化温度对压缩性能的影响

Figure 7.

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图 8 炭化时间对气孔率和收率的影响

Figure 8.

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图 9 炭化前后样品的XRD图谱：a-炭前驱体；b-多孔炭

Figure 9.

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图 10 炭化前后红外光谱图:a-炭质前驱体；b-多孔炭

Figure 10.

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图 11 前驱体热重曲线

Figure 11.

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图 12 炭质前驱体和多孔炭的SEM图和多孔炭实物图

Figure 12.

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图 13 多孔炭等温吸附与孔径分布曲线

Figure 13.

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三水碳酸镁催化酚醛聚合制备多孔炭及其性能研究

1. 沈阳理工大学 材料科学与工程学院，沈阳 110159 2. 矿物加工科学与技术国家重点实验室，北京 100160 3. 湖南大学 材料科学与工程学院，长沙 410082

通讯作者: 王余莲(1986-), 女, 湖南衡阳人, 博士, 副教授, 主要从事矿物材料的制备及应用研究

Preparation and Property of Porous Carbon with Phenolic Polymerization Catalyzed by Hydrated Magnesium Carbonate

1. School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China 2. State Key Laboratory of Mineral Processing, Beijing 100160, China 3. School of Materials Science and Engineering, Hunan University, Changsha 410082, China

Corresponding author: WANG Yulian

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目录

1.
沈阳理工大学材料科学与工程学院，沈阳 110159

2.
矿物加工科学与技术国家重点实验室，北京 100160

3.
湖南大学材料科学与工程学院，长沙 410082

1.
School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China

2.
State Key Laboratory of Mineral Processing, Beijing 100160, China

3.
School of Materials Science and Engineering, Hunan University, Changsha 410082, China