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Amine-Functionalized Metal Organic Framework as a Highly Selective Adsorbent for CO2 over CO
Alternative TitleJ. Phys. Chem. C
Wang, Xingrui1,2; Li, Huiquan1; Hou, Xin-Juan1
2012-09-20
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume116Issue:37Pages:19814-19821
AbstractAn amine-functionalized metal organic framework, TEPA-MIL-101, was prepared by grafting tetraethylenepentamine (TEPA) on the coordinatively unsaturated Cr(III) sites of MIL-101 for the selective adsorption of CO2 over CO. The adsorbents were characterized using various techniques. The results indicate that the TEPA molecule was successfully grafted on Cr(III) without destroying the intrinsic structure of MIL-101. Isotherms for CO2 and CO adsorption on MIL-101 and TEPA-MIL-101 were obtained to determine the effects of the grafted TEPA on the CO2 adsorption capacity and selectivity. The results show that the CO2 capacity on TEPA-MIL-101 was higher than that on MIL-101 at lower pressures, whereas the CO capacity sharply decreased. The selectivity for CO2 over CO was clearly improved from 1.77 to 70.2 at 298 K and total pressure 40 kPa. The density functional theory calculation for the adsorption of CO2 and CO on TEPA indicates that the bonding energy of CO2 is obviously higher than that of CO. Analysis of the cyclic adsorption performance reveals the high stability of the adsorbent. On the basis of the experimental and simulation results, the grafting of amines on coordinatively unsaturated sites of metal organic frameworks is an effective method of achieving selective adsorption of CO2 over CO.; An amine-functionalized metal organic framework, TEPA-MIL-101, was prepared by grafting tetraethylenepentamine (TEPA) on the coordinatively unsaturated Cr(III) sites of MIL-101 for the selective adsorption of CO2 over CO. The adsorbents were characterized using various techniques. The results indicate that the TEPA molecule was successfully grafted on Cr(III) without destroying the intrinsic structure of MIL-101. Isotherms for CO2 and CO adsorption on MIL-101 and TEPA-MIL-101 were obtained to determine the effects of the grafted TEPA on the CO2 adsorption capacity and selectivity. The results show that the CO2 capacity on TEPA-MIL-101 was higher than that on MIL-101 at lower pressures, whereas the CO capacity sharply decreased. The selectivity for CO2 over CO was clearly improved from 1.77 to 70.2 at 298 K and total pressure 40 kPa. The density functional theory calculation for the adsorption of CO2 and CO on TEPA indicates that the bonding energy of CO2 is obviously higher than that of CO. Analysis of the cyclic adsorption performance reveals the high stability of the adsorbent. On the basis of the experimental and simulation results, the grafting of amines on coordinatively unsaturated sites of metal organic frameworks is an effective method of achieving selective adsorption of CO2 over CO.
KeywordChromium Terephthalate Mil-101 Carbon-dioxide Catalytic-properties Zeolite 13x Adsorption Separation Capture Ch4 Encapsulation Consequences
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/jp3052938
URL查看原文
Indexed BySCI
Language英语
WOS KeywordCHROMIUM TEREPHTHALATE MIL-101 ; CARBON-DIOXIDE ; CATALYTIC-PROPERTIES ; ZEOLITE 13X ; ADSORPTION ; SEPARATION ; CAPTURE ; CH4 ; ENCAPSULATION ; CONSEQUENCES
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000308855600026
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Cited Times:72[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6266
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xingrui,Li, Huiquan,Hou, Xin-Juan. Amine-Functionalized Metal Organic Framework as a Highly Selective Adsorbent for CO2 over CO[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2012,116(37):19814-19821.
APA Wang, Xingrui,Li, Huiquan,&Hou, Xin-Juan.(2012).Amine-Functionalized Metal Organic Framework as a Highly Selective Adsorbent for CO2 over CO.JOURNAL OF PHYSICAL CHEMISTRY C,116(37),19814-19821.
MLA Wang, Xingrui,et al."Amine-Functionalized Metal Organic Framework as a Highly Selective Adsorbent for CO2 over CO".JOURNAL OF PHYSICAL CHEMISTRY C 116.37(2012):19814-19821.
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