氨基修饰复合型钠基吸收剂的脱碳特性

doi:10.11949/j.issn.0438-1157.20150060

化工学报 ›› 2015, Vol. 66 ›› Issue (10): 4218-4227.DOI: 10.11949/j.issn.0438-1157.20150060

氨基修饰复合型钠基吸收剂的脱碳特性

余帆¹, 吴烨², 董伟¹, 蔡天意¹, 张文静¹, 张聪², 陈晓平¹

1 东南大学能源与环境学院, 能源热转换及其过程测控教育部重点实验室, 江苏南京 210096;
2 南京理工大学能源与动力工程学院, 江苏南京 210094

收稿日期:2015-01-15 修回日期:2015-04-24 出版日期:2015-10-05 发布日期:2015-10-05
通讯作者: 陈晓平
基金资助:
国家自然科学基金项目(51476030);高等学校博士学科点专项科研基金(20130092110006)。

Carbonation characteristics of sodium-based sorbents with aminomodification for CO₂ capture

YU Fan¹, WU Ye², DONG Wei¹, CAI Tianyi¹, ZHANG Wenjing¹, ZHANG Cong², CHEN Xiaoping¹

1 School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China;
2 School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received:2015-01-15 Revised:2015-04-24 Online:2015-10-05 Published:2015-10-05
Supported by:
supported by the National Natural Science Foundation of China (51476030) and the Special Fund for Scientific Research on Doctor Subject in Colleges to Ministry of Education (20130092110006).

摘要/Abstract

摘要：

为弥补常规钠基吸收剂活性差、脱碳量低的不足,制备了多种表面氨基修饰的新型复合型钠基吸收剂并研究其脱碳特性。通过比较氨基流失率和实际脱碳量,选定二氧化硅的前驱物正硅酸乙酯为载体前驱物,以碳酸钠为活性成分,分别以3-氨基丙基三甲氧基硅烷(APS)、3-氨基丙基三乙氧基硅烷(APTES)、二乙烯三胺(DETA)、三乙烯四胺(TETA)为氨基前驱物,制备得到多种表面氨基修饰的复合型钠基吸收剂。探究各种吸收剂的孔隙结构与脱碳特性,结果表明,APS、APTES修饰后吸收剂孔隙特性较差,脱碳量较低,DETA、TETA修饰后吸收剂孔隙结构得到改善,脱碳量较高。

关键词: CO₂捕集, 固体吸收剂, Na₂CO₃, 氨基修饰, 二氧化硅, 溶胶凝胶法

Abstract:

In order to improve the CO₂ sorption performance of sodium-based sorbent, a series of sodium-based sorbents with amino modification were prepared by sol-gel method and the corresponding CO₂ sorption capacity were investigated in this paper. Tetraethylorthosilicate (TEOS) was chosen as the carrier precursor by comparing the amine loss rate and CO₂ sorption capacity of pure -NH₂ sorbents,and Na₂CO₃ was as the active ingredient. 3-aminopropyltrimethoxysilane (APS), 3-aminopropyltriethoxysilane (APTES), diethylenetriamine (DETA) and triethylenetetramine (TETA) were used, respectively as the amino precursor for synthesizing the composite sorbents and then drying them with conventional technique. Results showed that the sorbent modified with TETA had the highest CO₂ sorption capacity and the best pore structure, while that modified with APTES had the lowest amine loss but poor structure.

Key words: CO₂ capture, solid sorbents, Na₂CO₃, amino modification, silica, sol-gel

中图分类号:

TK09

余帆, 吴烨, 董伟, 蔡天意, 张文静, 张聪, 陈晓平. 氨基修饰复合型钠基吸收剂的脱碳特性[J]. 化工学报, 2015, 66(10): 4218-4227.

YU Fan, WU Ye, DONG Wei, CAI Tianyi, ZHANG Wenjing, ZHANG Cong, CHEN Xiaoping. Carbonation characteristics of sodium-based sorbents with aminomodification for CO₂ capture[J]. CIESC Journal, 2015, 66(10): 4218-4227.

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氨基修饰复合型钠基吸收剂的脱碳特性

Carbonation characteristics of sodium-based sorbents with aminomodification for CO₂ capture

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氨基修饰复合型钠基吸收剂的脱碳特性

Carbonation characteristics of sodium-based sorbents with aminomodification for CO2 capture

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Carbonation characteristics of sodium-based sorbents with aminomodification for CO₂ capture