期刊
CHINESE CHEMICAL LETTERS
卷 32, 期 3, 页码 1169-1172出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2020.09.036
关键词
Metal-organic framework; In-situ hydrolysis; Selective adsorption; CO2 capture; GCMC simulation
资金
- National Natural Science Foundation of China (NSFC) [21771191]
- Fundamental Research Funds for the Central Universities [19CX05001A]
An unexpected in-situ hydrolysis reaction led to the synthesis of a novel porous Ba-MOF material, UPC-70, which exhibits excellent CO2 adsorption performance and high separation selectivity, making it a potential candidate for capturing CO2 from flue gas and natural gas.
An unexpected in-situ hydrolysis reaction occurred during the solvothermal reaction of N,N '-bis(4-carboxy-2-methylphenyl)pyromellitic di-imide) and Ba(NO3)(2), and a novel porous Ba-MOF, [H2N (CH3)(2)](0.5)[Ba-1.5(L)(DMA)]center dot 1.5DMA center dot 1.5H(2)O (UPC-70, H3L = 2-(4-carboxy-2-methylphenyl)-1,3-dioxoisoin-doline-5,6-dicarboxylic acid, DMA = N,N-dimethylacetamide), was obtained on the basis of the partial hydrolysate. The as-synthesized 3D network with 1D open channels of different sizes (24 A and 10 A) contains abundant open metal sites after removal of solvents, which is conducive to the preferential adsorption of CO2. The subsequent gas sorption measurement reveals the high separation selectivity of UPC-70 for CO2/CH4 (15) and CO2/N-2 (32) at ambient conditions, and GCMC theoretical simulation provides good verification of the experimental results, indicating that UPC-70 is a potential candidate for CO2 capture from flue gas and natural gas. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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