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BMC Chemical Engineering: an open access publishing venue for the chemical engineering community BMC Chemical Engineering:化学工程社区的开放获取出版场所

IF 2.35

BMC Chemical Engineering Pub Date : 2019-01-30 DOI: 10.1186/s42480-019-0001-0

Harriet E. Manning, Robert Field, Rafiqul Gani, Adam Lee, Hyunjoo Lee, Jay H. Lee, Gongping Liu, Sang Yup Lee

引用次数: 1

Incorporation of Cu3BTC2 nanocrystals to increase the permeability of polymeric membranes in O2/N2 separation Cu3BTC2纳米晶的加入提高了聚合物膜在O2/N2分离中的渗透率

IF 2.35

BMC Chemical Engineering Pub Date : 2019-01-30 DOI: 10.1186/s42480-019-0002-z

Chong Yang Chuah, Tae-Hyun Bae

{"title":"Incorporation of Cu3BTC2 nanocrystals to increase the permeability of polymeric membranes in O2/N2 separation","authors":"Chong Yang Chuah, Tae-Hyun Bae","doi":"10.1186/s42480-019-0002-z","DOIUrl":"https://doi.org/10.1186/s42480-019-0002-z","url":null,"abstract":"To increase permeability in O2/N2 separation without compromising selectivity, Cu3BTC2 (or HKUST-1) nanocrystals, which possess well-defined channels and high surface area, were used as the filler for mixed-matrix membrane fabrication. The Cu3BTC2 nanocrystals, which were synthesized at room temperature with a facile method, showed desirable physical properties and porosity comparable to those of a commercial Cu3BTC2 adsorbent (Basolite C300). High-quality mixed-matrix membranes without appreciable defects were successfully fabricated with both Matrimid and polysulfone, which are commercial membrane polymers that suffer from poor permeability. Gas permeation testing revealed that 20?wt% Cu3BTC2 nanocrystals loading dramatically improved the O2 permeability of both polymer membranes (106% for Matrimid and 379% for polysulfone), with modest increases in O2/N2 selectivity. A detailed analysis of diffusivity and solubility showed that the overall O2/N2 diffusion selectivity was improved substantially over that of a neat polymeric membrane with the incorporation of Cu3BTC2 nanocrystals. A comparative study with literature data demonstrated that Cu3BTC2 nanocrystals are far more effective than other metal-organic framework fillers tested to increase permeability in O2/N2 separation.","PeriodicalId":495,"journal":{"name":"BMC Chemical Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.35,"publicationDate":"2019-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s42480-019-0002-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5142011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Noble gas separation by a MOF with one-dimensional channels 具有一维通道的MOF分离惰性气体

IF 2.35

BMC Chemical Engineering Pub Date : 2019-01-30 DOI: 10.1186/s42480-019-0003-y

Yang Liu, Jing Liu, Jianbo Hu

{"title":"Noble gas separation by a MOF with one-dimensional channels","authors":"Yang Liu, Jing Liu, Jianbo Hu","doi":"10.1186/s42480-019-0003-y","DOIUrl":"https://doi.org/10.1186/s42480-019-0003-y","url":null,"abstract":"Noble gas separation by microporous materials is a promising alternative to energy-intensive cryogenic distillation method by reducing the separation cost; however, developing novel microporous materials with excellent noble gas separation performance is still challenging due to closing chemical and physical properties among the gases. In this study, we propose to separate the noble gases (He, Ne, Ar, Kr and Xe) utilizing a metal organic framework (MOF), named SIFSIX-3-Zn, with ultra-micron sized 1-dimenssional (1D) channels (3.84??). Density functional theory (DFT) calculations reveal that the 1D channels provide significant adsorption potential differences among the noble gas molecules in various sizes: the larger the molecular size, the stronger the adsorption potential. Grand canonical Monte Carlo (GCMC) simulations verify that the MOF exhibits exceptional equilibrium separation performance of noble gases. Remarkably, Xe/He and Xe/Ne adsorption selectivity can be as high as 645 and 596, respectively, at 298?K and 10?kPa. While Xe/Kr selectivity in mixed gas is around 12 with a Xe adsorption amount of about 2.27?mmol/g at 273?K and 100?kPa, making SIFSIX-3-Zn one of the promising materials for equilibrium separation of Xe/Kr mixtures.","PeriodicalId":495,"journal":{"name":"BMC Chemical Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.35,"publicationDate":"2019-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s42480-019-0003-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5148395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

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