Utilizing Covalent Triazine Framework (CT-1) Loading for CT-1/Polysulfone Mixed Matrix Membrane for CO2

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-05-23 DOI:10.1134/s0965544124020051

Ali A. Abdulabbas, Thamer J. Mohammed, Tahseen Ali Al-Hattab

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Abstract

The growing need for carbon dioxide (CO₂) removal in various industrial sectors has led researchers to focus on the positive features of mixed matrix membranes (MMMs). Covalent triazine frameworks (CT-1) and polysulfone (PSF) were both used in the creation of MMMs. Due to the high porosity, significant area of surface, uniform dimension of pores, and thermal and chemical resistance, CT-1 was selected. The newly developed CT-1/PSF MMMs were prepared with different CT-1 loadings (0, 0.1, 0.3, 0.8, 1.1, and 1.5 wt %) in dope solution. The performance of membranes was evaluated using FTIR, FESEM, TGA, mechanical properties, and gas separation tests. In pure gas tests, the CO₂ permeance and ideal CO₂/N₂ and CO₂/CH₄ selectivity increased when CT-1 loading was increased from 0 to 0.8 wt %. MMMs confirmed 109.12 and 91.42% increases in CO₂/N₂ and CO₂/CH₄ selectivities compared to pure PSF, respectively. However, a further increase in CT-1 loading beyond 0.8 wt % led to a drop in ideal selectivity. CO₂ permeance and selectivity were reduced with pressure (2, 3, 4, and 5 bar). Additionally, investigated the effect of the feed stream (3/97 vol % of CO₂/CH₄) on CO₂ separation. This paper describes a new technique for improving the ability of mixed matrix membranes through CT-1 fillers.

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利用共价三嗪框架（CT-1）负载 CT-1/Polysulfone 混合基质膜吸收二氧化碳

摘要各个工业部门对去除二氧化碳（CO2）的需求日益增长，促使研究人员关注混合基质膜（MMMs）的积极特性。共价三嗪框架（CT-1）和聚砜（PSF）都被用于制造混合基质膜。由于 CT-1 孔隙率高、表面积大、孔隙尺寸均匀以及耐热性和耐化学性，因此被选中。新开发的 CT-1/PSF MMM 在掺杂溶液中的添加量不同（0、0.1、0.3、0.8、1.1 和 1.5 wt %）。使用傅立叶变换红外光谱、有限电子显微镜、热重分析、机械性能和气体分离测试对膜的性能进行了评估。在纯气测试中，当 CT-1 的负载量从 0 wt % 增加到 0.8 wt % 时，二氧化碳的渗透率以及理想的 CO2/N2 和 CO2/CH4 选择性均有所提高。与纯 PSF 相比，MMM 证实 CO2/N2 和 CO2/CH4 选择性分别提高了 109.12% 和 91.42%。然而，CT-1 含量超过 0.8 wt % 后，理想选择性下降。二氧化碳渗透率和选择性随压力（2、3、4 和 5 巴）的增加而降低。此外，还研究了进料流（3/97 vol % CO2/CH4）对二氧化碳分离的影响。本文介绍了一种通过 CT-1 填料提高混合基质膜能力的新技术。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.