模板剂十二胺对胺改性HMS吸附CO<sub>2</sub>的影响

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Abstract

The mesoporous silica HMS marked as HMS-1was prepared using tetraethyl orthosilicate as silica source and dodecylamine as template. Its template was removed by calcination and ethanol extraction. The materials without template was marked as HMS-2 (Calcined material) and HMS-3 (ethanol extraction). HMS-1, HMS-2 and HMS-3 were modified with mixed tetraethylenepentamine and diethanolamine. The structures of these materials were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) and N₂ adsorption/desorption experiment. The adsorption properties and regeneration ability of the materials toward CO₂ with low concentration at atmosphere pressure were studied. The results of XRD and FTIR showed that TEPA and DEA were loaded into the pores of HMS successfully. The N₂ adsorption/desorption experiment showed that the pore volume of HMS-1 and modified HMS was significantly lower than that of HMS-2 and HMS-3. At 20^oC, the adsorption amount of CO₂ with initial concentration of 10% follows an order of MA-HMS-1 (3.29mmol/g) > MA-HMS-3 (2.7mmol/g) > HMS-1 (1.88mmol/g) > MA-HMS-2 (1.65mmol/g) > HMS-2 (1.33mmol/g), indicating that the template, diethanolamine, presented in HMS not only increases the adsorption sites, but also had synergistic effects on CO₂ adsorption to HMS functionalized with the mixed organic amines too. As temperature ranged from 20^oC to 75^oC, MA-HMS-1 and MA-HMS-3 adsorption were affected obviously and its amount reached the maximum at 65^oC. The adsorption amount of HMS-1 decreased consecutively with elevating temperature and MA-HMS-2 had almost a constant adsorption amount. The amine-containing materials, HMS-1, MA-HMS-1, MA-HMS-2 and MA-HMS-3, had excellent regeneration capability at 80^oC. After four times of continuous adsorption-desorption cycles, the regenerating ratio of MA-HMS-1 (97.5%) was much higher than that of MA-HMS-2 (83%) and MA-HMS-3 (84%), reflecting that the preserved template improved the regeneration capacity obviously.

Key words： amino modification template mesoporous silica CO₂ adsorption

Received: 18 September 2017

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	Articles by authors
	REN Jie
	LIU Feng-ling
	QIU Hui
	LU Xia
	LU Shuai-shuai
	GUO Zhao-bing

Cite this article:

REN Jie,LIU Feng-ling,QIU Hui等. The influences of template dodecylamine on CO₂ adsorption to Amine-modified HMS[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(4): 1274-1279.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I4/1274

[1]	朱益飞.温室效应的危害及治理对策措施[J]. 系统应用, 2016,(3):106-109.
[2]	Ye Q, Jiang J Q, Wang C X, et al. Adsorption of low-concentration carbon dioxide on amine-modified carbon nanotubes at ambient temperature[J]. Energy & Fuels, 2012,26(4):2497-2504.
[3]	Nugent P, Belmabkhout Y, Burd S D, et al. Porous materials with optimal adsorption thermodynamics and kinetics for CO2 separation[J]. Nature, 2013,495(7439):80-84.
[4]	Qian D, Lei C, Wang E M, et al. A method for creating microporous carbon materials with excellent CO2-adsorption capacity and selectivity[J]. Chemsuschem, 2014,7(1):291-298.
[5]	刘凤玲,卢霞,刘杰,等.不同特性的多孔炭对CO2的吸附研究[J]. 中国环境科学, 2014,34(6):1404-1409.
[6]	赵会玲,胡军,汪建军,等.介孔材料氨基表面修饰及其对CO2的吸附性能[J]. 物理化学学报, 2007,23(6):801-806.
[7]	Wei J W, Liao L, Xiao Y, et al. Capture of carbon dioxide by amine-impregnated as-synthesized MCM-41[J]. Journal of Environmental Sciences. 2010,22(10):1558-1563.
[8]	郝士油,肖强,钟依均,等.胺基功能化中孔氧化硅材料的合成及其CO2吸附性能的研究进展[J]. 材料科学与工程学报, 2011,29(1):143-148.
[9]	陈琳琳,郭庆杰.混合胺修饰的介孔硅胶吸附CO2性能研究[J]. 山东化工, 2015,(1):1-4.
[10]	赵会民,林丹,杨刚,等.有机胺修饰具有较大孔径介孔材料的二氧化碳吸附性能[J].物理化学学报, 2012,28(4):985-992.
[11]	Yue M B, Chun Y, Cao Y, et al. CO2 capture by as-prepared SBA-15with an occluded organic template[J]. Advanced Functional Materials, 2006,16(13):1717-1722.
[12]	Yue M B, Sun L B, Cao Y, et al. Promoting the CO2adsorption in the amine-containing SBA-15by hydroxyl group[J]. Microporous and Mesoporous Materials, 2008,114:74-81.
[13]	Yu W H, Zhou C H, Ni Z M, et al.Enhancing isolated Ti (IV) framework sites in HMS[J]. Chemical Research in Chinese University, 23(2):127-130.
[14]	Zhao X S, Lu G Q, Whittaker A K, et al. Comprehensive Study of Surface Chemistry of MCM-41Using 29Si CP/MAS NMR, FTIR, Pyridine-TPD, and TGA[J]. Journal of Physical Chemistry B, 1997,101(33):6525-6531.
[15]	Wang W Z, Pauly T R, Pinnvaia T J. Tailoring the framework and textural mesopores of HMS molecular sieves through an electrically neutral (S°I°) assembly pathway[J]. Chemistry of Materials, 1997,9:2491-2498.
[16]	Pauly T R, Liu Y, Pinnvaia T J, et al. Textural mesoporosity and the catalytic activity of mesoporous molecular sieves with wormhole framework structures[J]. Journal of the American Chemical Society. 1999,121:8835-8842.
[17]	Lu C, Bai H, Su F, et al. Adsorption of carbon dioxide from gas streams via mesoporous spherical-silica particles[J]. Journal of the Air & Waste Management Association. 2010,60:489-496.
[18]	Wang X R, Li H Q, Liu H T, et al. AS-synthesized mesoporous silica MSU-1modified with tetraethylenepentamine for CO2 adsorption[J]. Microporous and Mesoporous Materials, 2011, 142:564-569.
[19]	简相坤,刘石彩.活性炭微结构与吸附、解吸CO2的关系[J]. 煤炭学报, 2013,38(2):326-330.
[20]	刘凤玲,卢霞,张慧,等.低浓度CO2在聚苯胺/Y分子筛复合材料上的吸附[J]. 环境科学, 2015,36(12):4396-4402.
[21]	孟建文,和凯凯,孟令硕,等.TEPA/TETA改性SBA-15对CO2吸附性能的影响[J]. 环境工程学报, 2015,9(9):4447-4452.
[22]	Ma J J, Liu Q M, Chen D D. Carbon dioxide adsorption using amine-functionalized mesocellular siliceous foams[J]. Journal of Materials Science, 2014,49:7585-7596.