Monoethanolamine-Modified Attapulgite-Based Amorphous Silica for the Selective Adsorption of CO2 from Simulated Biogas

doi:10.1021/acs.energyfuels.9b03997

	Monoethanolamine-Modified Attapulgite-Based Amorphous Silica for the Selective Adsorption of CO2 from Simulated Biogas
	Li, Qinglin 4,5; Zhang, Hairong 1,2,3; Peng, Fen 1,2,3; Wang, Can 1,2,3; Li, Hailong 1,2,3; Xiong, Lian 1,2,3; Guo, Haijun 1,2,3; Chen, Xinde 1,2,3
刊名	ENERGY & FUELS
	2020-02-01
卷号	34 期号:2 页码:2097-2106
ISSN号	0887-0624
DOI	10.1021/acs.energyfuels.9b03997
通讯作者	Guo, Haijun(guohj@ms.giec.ac.cn) ; Chen, Xinde(cxd_cxd@hotmail.com)
英文摘要	Biogas upgrading technology is important for increasing the heating value of biogas through selective adsorption of CO2. In this work, a series of new monoethanolamine (MEA)-modified attapulgite (ATP)-based amorphous silica (a-SiO2) sorbents with a large surface area and oxygen vacancies were prepared by the impregnation method for the selective adsorption of CO2 from simulated biogas. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and N-2 adsorption-desorption results indicated that MEA with suitable loading was anchored onto the external surface of a-SiO2, which could improve the dispersion of rodlike fibers of ATP. MEA loading and reaction temperature optimization experiments showed that the 50MEA/a-SiO2 sorbent achieved the highest CO2 adsorption capacity of 2.14 mmol/g with an amine efficiency of 5.22 mmol/g and 0.32 mol/mol at 60 degrees C. Furthermore, only a 6.3 and 4.7% reduction of CO2 adsorption capacity occurred after five adsorption-desorption cycles under simulated biogas at 30 and 60 degrees C adsorption, respectively, indicating that the sorbent has good regenerability and thermal stability. The chemical adsorption was proved to be the CO2 adsorption mechanism of MEA-modified ATP-based a-SiO2 sorbent by XRD and FTIR testing.
资助项目	Science and Technology Program of Guangzhou, China[201707010240] ; Project of Jiangsu Province Science and Technology[BE2018342] ; Project of Jiangsu Province Science and Technology[BE2016706] ; Project of Guangdong Provincial Natural Science Foundation[2018A030310126] ; Project of Guangdong Provincial Natural Science Foundation[2018A030313150] ; tender project of HuaiAn[HAZC2018010036] ; Project of Key Laboratory Foundation of Renewable Energy, Chinese Academy of Science (CAS)[Y807jc1001]
WOS关键词	CARBON-DIOXIDE CAPTURE ; AMINE ; SEPARATION ; CO2/CH4 ; GAS ; PALYGORSKITE ; PERFORMANCE ; IMPREGNATION ; SORBENT ; SBA-15
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000518215400099
资助机构	Science and Technology Program of Guangzhou, China ; Project of Jiangsu Province Science and Technology ; Project of Guangdong Provincial Natural Science Foundation ; tender project of HuaiAn ; Project of Key Laboratory Foundation of Renewable Energy, Chinese Academy of Science (CAS)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26531]
专题	中国科学院广州能源研究所
通讯作者	Guo, Haijun; Chen, Xinde
作者单位	1.Chinese Acad Sci, R&D Ctr Xuyi Attapulgite Appl Technol, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Prov Key Lab New & Renewable Energy Res & Dev, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 5.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China
推荐引用方式 GB/T 7714	Li, Qinglin,Zhang, Hairong,Peng, Fen,et al. Monoethanolamine-Modified Attapulgite-Based Amorphous Silica for the Selective Adsorption of CO2 from Simulated Biogas[J]. ENERGY & FUELS,2020,34(2):2097-2106.
APA	Li, Qinglin.,Zhang, Hairong.,Peng, Fen.,Wang, Can.,Li, Hailong.,...&Chen, Xinde.(2020).Monoethanolamine-Modified Attapulgite-Based Amorphous Silica for the Selective Adsorption of CO2 from Simulated Biogas.ENERGY & FUELS,34(2),2097-2106.
MLA	Li, Qinglin,et al."Monoethanolamine-Modified Attapulgite-Based Amorphous Silica for the Selective Adsorption of CO2 from Simulated Biogas".ENERGY & FUELS 34.2(2020):2097-2106.