Amine-modified bimodal meso/macroporous silica for CO2 capture

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2025-05-09 DOI:10.1016/j.micromeso.2025.113680

Elena A. Chernikova , Lev M. Glukhov , Vladimir G. Krasovskiy , Gennadiy I. Kapustin , Nikolay A. Davshan , Igor V. Mishin , Leonid M. Kustov

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Abstract

The CO₂ adsorption performance of solid adsorbents prepared by impregnation of primary and secondary amines into meso/macroporous silica materials with a bimodal pore size distribution is evaluated. Monoethanolamine (MEA), diethylenetriamine (DETA), triethylenetetramine (TETA), tris(2-aminoethyl)amine (TAEA), tris(3-aminopropyl)amine (TAPA), 1,3-diamino-2-propanol (DAP), tetrakis(aminomethyl)methane (TAMM) and linear polyethyleneimine (PEI) were immobilized into silica supports with high loading levels (40–60 wt%). The DETA-impregnated adsorbent at the optimal loading (51.7 wt%) exhibited the highest adsorption capacity of 6.78 mmol/g (29.9 wt%) under pure CO₂ flow. CO₂ adsorption performance was measured in a fixed bed reactor equipped with the temperature sensor. The influence of the CO₂ content in the gas mixture and flow rate on the adsorption temperature and adsorption capacity was studied.

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胺改性双峰介孔/大孔二氧化硅捕集CO2

考察了以伯胺和仲胺浸渍制备的固体吸附剂对具有双峰孔径分布的介孔/大孔二氧化硅材料的CO2吸附性能。将单乙醇胺（MEA）、二乙基三胺（DETA）、三乙基四胺（TETA）、三（2-氨基乙基）胺（TAEA）、三（3-氨基丙基）胺（TAPA）、1,3-二氨基-2-丙醇（DAP）、四（氨基甲基）甲烷（TAMM）和线性聚乙烯亚胺（PEI）固定在高负载水平（40-60 wt%）的二氧化硅载体中。最佳负载（51.7 wt%）下，deta浸渍吸附剂在纯CO2流动下的最高吸附量为6.78 mmol/g （29.9 wt%）。在装有温度传感器的固定床反应器中测量了CO2吸附性能。研究了混合气体中CO2含量和流量对吸附温度和吸附量的影响。

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.