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Highly effective H_(2)/D_(2)separation in a stable Cu-based metalorganic framework

Nano Research 2021年第2期14卷 518-525页

作者： Yanan Si Xiang He Jie Jiang Zhiming Duan Wenjing Wang Daqiang Yuan State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Department of Chemistry College of SciencesShanghai UniversityShanghai 200444China University of the Chinese Academy of Sciences Beijing 100049China

A three-dimensional copper metal-organic framework with the rare chabazite(CHA)topology namely FJI-Y11 has been constructed with flexibly carboxylic ligand 5,5'-[(1,4-phenylenebis(methylene))bis(oxy)]diisophthalic acid(H_(4)L).FJI-Y11 exhibits high water stability with the pH range from 2 to 12 at temperature as high as 373 ***,FJI-Y11 also shows high efficiency of hydrogen isotope separation using dynamic column breakthrough experiments under atmospheric pressure at 77 *** to its excellent structural stability,FJI-Y11 possesses good regenerated performance and maintains high separation efficiency after three cycles of breakthrough experiments.

关键词： metal-organic framework(MOFs) hydrogen isotope separation breakthrough experiments

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Ultrafine tuning of the pore size in zeolite A for efficient propyne removal from propylene

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Chinese Journal of Chemical Engineering 2021年第9期34卷 217-221页

作者： Chaohui He Rajamani Krishna Yang Chen Jiangfeng Yang Jinping Li Libo Li College of Chemistry and Chemical Engineering Shanxi Key Laboratory of Gas Energy Efficient and Clean UtilizationTaiyuan University of TechnologyTaiyuan 030024China Van’t Hoff Institute for Molecular Sciences University of AmsterdamScience Park 9041098 XH Amsterdamthe Netherlands Key Laboratory of Coal Science and Technology Taiyuan University of TechnologyTaiyuan 030024China

The removal of trace propyne(C_(3)H_(4))from propyne/propylene(C_(3)H_(4)/C_(3)H_(6))mixtures is a technical and challenging task during the production of polymer-grade propylene in view of their very similar size and physical *** some progress has been made,it is still very challenging to use some highly stable and commercially available porous materials via an energy-efficient adsorptive separation ***,we report the ultrafine tuning of the pore apertures in type-A zeolites for the highly efficient removal of trace amounts of C_(3)H_(4)from C_(3)H_(4)/C_(3)H_(6)*** resulting ion-exchanged zeolite 5 A exhibits a large C_(3)H_(4)adsorption capacity(2.3 mmol g^(-1)under 10^(-4)MPa)and high C_(3)H_(4)/C_(3)H_(6)selectivity at room temperature,which were mainly attributed to the ultrafine-tuned pore size that selectively blocks C_(3)H_(6)molecules,while maintaining the stro ng adsorption of C_(3)H_(4)at low pressure *** purity of C_(3)H_(6)(>99.9999%)can be directly obtained on this material under ambient conditions,as demonstrated by the experimental breakthrough curves obtained for both 1/99 and 0.1/99.9(V V)C_(3)H_(4)/C_(3)H_(6) mixtures.

关键词： Type-A zeolite Ion-exchange Pore tuning Propyne/propylene separation breakthrough experiments

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