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Qian J, Pu X, Liu Q, Zhou X, Han X, Ye L, Qin X, Liu J. Introducing of Cu(I) in MOFs by In Situ Reduction with Ni as the Catalyst for Efficient Olefin/Paraffin Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38029304 DOI: 10.1021/acs.langmuir.3c02731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Olefins can be cracked to provide more low-carbon olefins than paraffins; therefore, separation of olefin/paraffin mixtures is essential for arranging hydrocarbon molecules for directed conversion. In this article, a simple approach for reducing copper atoms in Cu-BTC has been developed to improve olefin/paraffin adsorption capacity and selectivity. Considering that Cu-BTC shows adsorption benefits, its olefin/paraffin adsorption and separation performance were improved further by in situ reduction of Cu(II) to Cu(I) in Cu-BTC using ethanol as the reducing agent and nickel ions as the catalyst. The results revealed that during the reduction process, Cu ion conversion from tetra-ligand to diligand considerably increased their specific surface area, resulting in more active adsorption sites inside the modified sample. The ratio of Cu(I)/Cu(II) in the modified samples varied from 0.57 to 0.96. When Cu(II) of Cu-BTC was reduced to Cu(I), the adsorption capacities of 1-hexene increased from 145.97 to 243.65 mg/g, whereas n-hexane adsorption increased only slightly from 8.18 to 11.43 mg/g, resulting in an acceptable increase in selectivity from 17.84 to 21.32. Cu-BTC, due to its own Cu atoms, minimizes the substantial requirements for the synthesis process as well as the oxygen avoidance conditions for storage when monovalent copper is introduced, compared to other porous materials. Experimental results found that when Cu(I) was introduced, the Lewis acidic sites of the modified Cu-BTC material were increased, and Cu(I) has an electrical structure that makes it susceptible to both accepting and donating too many d electrons, resulting in a stronger adsorption of olefins containing π-electrons to them. Materials Studio simulation revealed that the isosteric heats of modified Cu-BTC increased by 2.7 kJ/mol, indicating that it has a stronger adsorption capacity for olefins.
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Affiliation(s)
- Jiayu Qian
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xin Pu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qiaona Liu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoyu Zhou
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xin Han
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Lei Ye
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xinglong Qin
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jichang Liu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, China
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Kim J, Jung T, Cho DW, Yoo CY. Comprehensive evaluation of 3A, 4A, 5A, and 13X zeolites for selective 1-octene adsorption over n-octane. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Li H, Zhang Z, Sun G, Liu S, An L, Li X, Li H, Gao X. Performance and mechanism of the separation of
C8
α‐olefin from
F‐T
synthesis products using novel
Ag‐DES. AIChE J 2021. [DOI: 10.1002/aic.17252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hu Li
- School of Chemical Engineering and Technology National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University Tianjin 300072 China
| | - Zisheng Zhang
- School of Chemical Engineering and Technology National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University Tianjin 300072 China
- Department of Chemical and Biological Engineering University of Ottawa Ottawa Ontario K1N 6N5 Canada
| | - Guanlun Sun
- School of Chemical Engineering and Technology National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University Tianjin 300072 China
| | - Suli Liu
- Ningxia Coal Industry Group Co. Ltd., CHN ENERGY Yinchuan 750011 China
| | - Liangcheng An
- Ningxia Coal Industry Group Co. Ltd., CHN ENERGY Yinchuan 750011 China
| | - Xingang Li
- School of Chemical Engineering and Technology National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University Tianjin 300072 China
| | - Hong Li
- School of Chemical Engineering and Technology National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University Tianjin 300072 China
| | - Xin Gao
- School of Chemical Engineering and Technology National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University Tianjin 300072 China
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4
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Microgeometry-independent equation for measuring infinite dilution activity coefficients using gas-liquid chromatography with static-wall-coated open-tubular columns. J Chromatogr A 2020; 1624:461264. [DOI: 10.1016/j.chroma.2020.461264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 05/02/2020] [Accepted: 05/19/2020] [Indexed: 11/20/2022]
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5
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Yang R, Gao R, Wang Y, Qian Z, Luo G. Selective Adsorption of C 6, C 8, and C 10 Linear α-Olefins from Binary Liquid-Phase Olefin/Paraffin Mixtures Using Zeolite Adsorbents: Experiment and Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8597-8609. [PMID: 32659090 DOI: 10.1021/acs.langmuir.0c01449] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The adsorption separation of gaseous olefin/paraffin using porous materials has been extensively studied from both experimental and molecular simulation perspectives, while the adsorption separation of liquid-phase olefin/paraffin has been much less studied. One of the most important reasons for this is that it is difficult to measure the actual adsorption capacity of liquid-phase adsorption separation directly through experiments, and the simulation results of most studies are compared to gas-phase measurements. In this paper, the selective adsorption of linear α-olefins from three binary liquid-phase olefin/paraffin mixtures, 1-hexene/n-hexane (C6), 1-octene/n-octane (C8), and 1-decene/n-decane (C10), by zeolite adsorbents was systematically investigated using batch adsorption experiments and configurational-bias grand canonical Monte Carlo (CB-GCMC) simulations. In the batch experiments, based on the liquid-phase measurement method of the actual adsorption capacity that we developed, a modified commercial 5A zeolite with a relatively large pore volume and surface area was used for adsorption. The results showed that the modified 5A zeolite had larger actual adsorption capacities for C6 and C8 linear α-olefins, which increased by 51% and 56%, respectively, than the standard 5A zeolite that was used in our previous work. The adsorption isotherms of C6, C8, and C10 in the 5A and 13X zeolites were calculated by CB-GCMC simulations. The visualized results of density profiles showed that the olefin molecules were densely distributed at the edge of the zeolite cages and that there were cases where a single molecule was adsorbed over two adjacent cages. The good agreement between the experimental and simulated data proves the completeness of the liquid-phase measurement method that we developed and the reliability of the simulation prediction.
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Affiliation(s)
- Ruihan Yang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Ruomei Gao
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yujun Wang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Zhen Qian
- Inner Mongolia Yitai Group Co., Ltd., Inner Mongolia 017000, China
| | - Guangsheng Luo
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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6
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Jiang H, Wang D, Tan J, Chen Y, An Y, Chen Y, Wu Y, Sun H, Shen B, Wu D, Liu J, Ling H, Zhao J, Tong Y. In Situ Hydrothermal Conversion of Silica Gel Precursors to Binderless Zeolite X Pellets for Enhanced Olefin Adsorption. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Jiang
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Dan Wang
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Jialun Tan
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Yuxiang Chen
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Yang An
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Yonghao Chen
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Yuan Wu
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
| | - Hui Sun
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Benxian Shen
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Di Wu
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
- Materials Science and Engineering, Washington State University, Pullman, Washington 99163, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99163, United States
| | - Jichang Liu
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hao Ling
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jigang Zhao
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yujun Tong
- Sinopec Dalian Research Institute of Petroleum and Petrochemicals, Dalian Liaoning 116100, China
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7
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Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Abstract
Abstract
In China, the rapid development greatly promotes the national economic power and living standard but also inevitably brings a series of environmental problems. In order to resolve these problems fundamentally, Chinese scientists have been undertaking research in the area of green chemical engineering (GCE) for many years and achieved great progresses. In this paper, we reviewed the research progresses related to GCE in China and screened four typical topics related to the Chinese resources characteristics and environmental requirements, i.e. ionic liquids and their applications, biomass utilization and bio-based materials/products, green solvent-mediated extraction technologies, and cold plasmas for coal conversion. Afterwards, the perspectives and development tendencies of GCE were proposed, and the challenges which will be faced while developing available industrial technologies in China were mentioned.
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Paredes X, Fernández J, Pádua AAH, Malfreyt P, Malberg F, Kirchner B, Pensado AS. Using Molecular Simulation to Understand the Structure of [C2C1im]+–Alkylsulfate Ionic Liquids: Bulk and Liquid–Vapor Interfaces. J Phys Chem B 2012; 116:14159-70. [DOI: 10.1021/jp309532t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xavier Paredes
- Laboratorio de Propiedades Termofísicas,
Departamento de Física Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela,
Spain
| | - Josefa Fernández
- Laboratorio de Propiedades Termofísicas,
Departamento de Física Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela,
Spain
| | - Agílio A. H. Pádua
- Institut de Chimie de Clermont-Ferrand, Equipe Thermodynamique et Interactions
Moléculaires, Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubiere, France, and
CNRS, UMR6296 ICCF, BP 80026, F-63171 Aubiere, France
| | - Patrice Malfreyt
- Institut de Chimie de Clermont-Ferrand, Equipe Thermodynamique et Interactions
Moléculaires, Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubiere, France, and
CNRS, UMR6296 ICCF, BP 80026, F-63171 Aubiere, France
| | - Friedrich Malberg
- Wilhelm-Ostwald-Institut für
Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Barbara Kirchner
- Wilhelm-Ostwald-Institut für
Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Alfonso Sanmartín Pensado
- Laboratorio de Propiedades Termofísicas,
Departamento de Física Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela,
Spain
- Wilhelm-Ostwald-Institut für
Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
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