{"title":"In situ synthesis of TiFSIX-3-Ni@ZIF-7@poly(acrylates) composite for CO2 capture from wet flue gas","authors":"Chunying Liu, Kun Liu, Junteng Liu, Junsu Jin, Jianguo Mi, Yongqiang Ren, Shisen Xu","doi":"10.1016/j.seppur.2024.130197","DOIUrl":null,"url":null,"abstract":"TiFSIX-3-Ni, a hybridized ultra-microporous material, exhibiting a remarkable uptake for low concentration CO<sub>2</sub> adsorption under dry condition. However, its high degree of hydrophilicity results in notable decrease in CO<sub>2</sub> capture efficacy under wet flue gas. Moreover, the crystalline structure could be collapsed when exposure to water vapor during regeneration. To solve these problems, here we propose a TiFSIX-3-Ni@ZIF-7@poly(acrylates) composite, where the TiFSIX-3-Ni crystals grow in situ on the marcroporous surface of poly(acrylates) matrix, and each crystal is covered by a thin layer of hydrophobic ZIF-7, forming the confined ZIF-on-MOF structure. Apart from providing hydrophobic protection for the ZIF-on-MOF crystals, the poly(acrylates) skeleton also shapes the downsized crystals into the micrometer-sized spherical particles to avoid powder. At 40 °C and 90 % relative humidity (RH), the composite can maintain 88 % of its dry CO<sub>2</sub> adsorption uptake, and the adsorption time is 73 % of the unshaped TiFSIX-3-Ni powder. After 20 consecutive cycles, the CO<sub>2</sub> adsorption loss rate in a moist flue gas is found to be only 0.24 %, indicating that the TiFSIX-3-Ni@ZIF-7@poly(acrylates) composite is highly suitable for CO<sub>2</sub> adsorption from wet flue gas.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.seppur.2024.130197","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
TiFSIX-3-Ni, a hybridized ultra-microporous material, exhibiting a remarkable uptake for low concentration CO2 adsorption under dry condition. However, its high degree of hydrophilicity results in notable decrease in CO2 capture efficacy under wet flue gas. Moreover, the crystalline structure could be collapsed when exposure to water vapor during regeneration. To solve these problems, here we propose a TiFSIX-3-Ni@ZIF-7@poly(acrylates) composite, where the TiFSIX-3-Ni crystals grow in situ on the marcroporous surface of poly(acrylates) matrix, and each crystal is covered by a thin layer of hydrophobic ZIF-7, forming the confined ZIF-on-MOF structure. Apart from providing hydrophobic protection for the ZIF-on-MOF crystals, the poly(acrylates) skeleton also shapes the downsized crystals into the micrometer-sized spherical particles to avoid powder. At 40 °C and 90 % relative humidity (RH), the composite can maintain 88 % of its dry CO2 adsorption uptake, and the adsorption time is 73 % of the unshaped TiFSIX-3-Ni powder. After 20 consecutive cycles, the CO2 adsorption loss rate in a moist flue gas is found to be only 0.24 %, indicating that the TiFSIX-3-Ni@ZIF-7@poly(acrylates) composite is highly suitable for CO2 adsorption from wet flue gas.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.