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The adsorption properties of NaY zeolite for separation of ethylene glycol and 1,2-butanediol: Experiment and molecular modelling

文献类型：期刊论文

作者Xiong, Pei5,6; He, Peng4,6; Qu, Yixin5; Wang, Liguo1,4,6,7; Cao, Yan6; Xu, Shuang6; Chen, Jiaqiang6; Ammar, Muhammad3; Li, Huiquan1,2,6,7
刊名GREEN ENERGY & ENVIRONMENT
出版日期2021-02-01
卷号6期号:1页码:102-113
ISSN号2096-2797
关键词Adsorption mechanism Ethylene glycol (EG) 1,2-Butanediol (1,2-BDO) NaY zeolite Fixed-bed column tests
DOI10.1016/j.gee.2019.12.006
英文摘要The separation of ethylene glycol (EG) and 1,2-butanediol (1,2-BDO) azeotrope in the synthesis process of EG via coal and biomass is becoming of increasing commercial and environmental importance. Selective adsorption is deemed as the most promising methods because of energy saving and environment favorable. In this paper, NaY zeolite was used to separate 1,2-BDO from EG, and its adsorption properties was then investigated. The isotherms of EG and 1,2-BDO in vapor and liquid phases from 298 to 328 K indicated that they fitted Langmuir model quite well, and the NaY zeolite absorbent favored EG more than 1,2-BDO. The Grand Canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulation techniques were conducted to investigate the competition adsorption and diffusion characteristics in different adsorption regions. It was observed that EG and 1,2-BDO molecules all have the most probable locations of the center of the 12-membered ring near the Na cations. The diffusivities of EG are lower than those of 1,2-BDO at the same adsorption concentration. At last, the breakthrough curves of the binary mixture regressed from the empirical Dose-Response model in fixed-bed column showed that the adsorption selectivity of EG could reach to as high as 2.43, verified that the NaY zeolite could effectively separate EG from 1,2-BDO. This work is also helpful for further separation of other dihydric alcohol mixtures from coal and biomass fermentation. (C) 2020, Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.
WOS关键词FAUJASITE SYSTEMS ; ACTIVATED CARBON ; METHANOL ; DIFFUSION ; REMOVAL ; 1,2-PROPANEDIOL ; EQUILIBRIUM ; BUTANEDIOL ; DYNAMICS ; BENZENE
资助项目National Natural Science Foundation of China[21576272] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of Chinese Academy of Sciences[XDA 21030600] ; Science and Technology Service Network Initiative, Chinese Academy of Sciences[KFJ-STS-QYZD-138]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Energy & Fuels ; Engineering
语种英语
出版者KEAI PUBLISHING LTD
WOS记录号WOS:000652364100012
资助机构National Natural Science Foundation of China ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of Chinese Academy of Sciences ; Science and Technology Service Network Initiative, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/48774]  
专题中国科学院过程工程研究所
通讯作者He, Peng; Li, Huiquan
作者单位1.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Govt Coll Univ, Dept Chem Engn Technol, Faisalabad 38000, Pakistan
4.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
5.Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
7.Univ Chinese Acad Sci, Sino Danish Ctr Educ & Res, Beijing 10049, Peoples R China
推荐引用方式
GB/T 7714		 Xiong, Pei,He, Peng,Qu, Yixin,et al. The adsorption properties of NaY zeolite for separation of ethylene glycol and 1,2-butanediol: Experiment and molecular modelling[J]. GREEN ENERGY & ENVIRONMENT,2021,6(1):102-113.
APA Xiong, Pei.,He, Peng.,Qu, Yixin.,Wang, Liguo.,Cao, Yan.,...&Li, Huiquan.(2021).The adsorption properties of NaY zeolite for separation of ethylene glycol and 1,2-butanediol: Experiment and molecular modelling.GREEN ENERGY & ENVIRONMENT,6(1),102-113.
MLA Xiong, Pei,et al."The adsorption properties of NaY zeolite for separation of ethylene glycol and 1,2-butanediol: Experiment and molecular modelling".GREEN ENERGY & ENVIRONMENT 6.1(2021):102-113.

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来源：过程工程研究所

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