Journal
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
Volume 93, Issue 10, Pages 2898-2905Publisher
WILEY
DOI: 10.1002/jctb.5644
Keywords
adsorption; separation; green engineering; products; characterization
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Funding
- National Natural Science Foundation of China [11775037, 21676030]
- Natural Science Fund for Colleges and Universities in the Jiangsu Province [16KJD530001]
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
- Graduate Students Cultivation and Innovation Project of Jiangsu Province [KYCX17_2081]
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BackgroundMetal-organic frameworks (MOFs) are energy-efficient adsorbents for separating industrial chemical feedstocks. A type of MOF containing an extended porous network of -cyclodextrin (-CD) and alkali metal salts, CD-MOF, has potential applications in adsorption separation processes in the petrochemical industry. This study aims to present the adsorption efficiency of CD-MOF-1 in separating xylene regioisomers. ResultsThe adsorption separation of xylene regioisomers on layered CD-MOF-1 microcrystals was studied using batch vapor-phase adsorption and liquid-phase breakthrough adsorption. CD-MOF-1 showed preferable adsorption of o-xylene over the other two isomers, with adsorption strength in the order o-xylene (oX)>m-xylene (mX)>p-xylene (pX). With increased temperature, high adsorption capacities of oX and mX over pX were detected. However, this also resulted in a decrease of the separation factors of oX/pX and mX/pX. ConclusionThe high resolution and large separation factors for oX/pX and mX/pX make CD-MOF-1 an efficient and reliable alternative adsorbent to the isolation protocols for xylene isomers currently used in the petrochemical industry. (c) 2018 Society of Chemical Industry
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