Sorbenten zur direkten Gewinnung von CO₂ aus der Umgebungsluft

Abstract

Die Dringlichkeit, den durch Treibhausgasemissionen verursachten globalen Klimawandel anzugehen, wächst von Tag zu Tag. Insbesondere der Anstieg der atmosphärischen CO2‐Werte löst Alarm aus. Technologien zum Absorbieren von CO2 aus der Umgebungsluft, oder “Direct Air Capture” (DAC), haben kürzlich gezeigt, dass sie zu “negativen Kohlenstoffemissionen” beitragen können. Die jüngsten Fortschritte in der Oberflächenchemie und der Materialsynthese haben neue Generationen von CO2‐Sorptionsmitteln ermöglicht, die möglicherweise die Zukunft von DAC und seiner großangelegten Verwendung vorantreiben können. In diesem Aufsatz werden die wichtigsten Arten von Sorptionsmitteln zur Gewinnung von CO2 aus der Umgebungsluft beschrieben und nach Sorptionsmechanismen kategorisiert: Physisorption, Chemisorption und Feuchtigkeitswechsel‐Sorption.

Utilizing Gelatin Waste for Efficient Bimodal Porous Silica Adsorbents for Carbon Dioxide Capture

“…To date, extensive research have pivoted toward CO 2 adsorptive separation using porous solid substrates such as zeolites, [14–16] silicas, [17–19] carbonaceous materials, [20–22] metal oxides, [23–25] and metal‐organic frameworks (MOF) [26–28] . This approach carries benefits like simplicity, cost‐effectiveness and energy efficiency with high stability throughout looping processes, making it a promising alternative for CO 2 capture separation [29,30] . Among the diverse array of solid sorbents, amine‐modified porous materials have gained significant interest owing to their strong affinity and pronounced selectivity for CO 2 [31–34] .…”

Carbon Dioxide Chemically Responsive Switchable Gas Valves with Protonation‐Induced Liquid Gating Self‐Adaptive Systems

“…One of the promising pathways to reduce anthropogenic CO 2 emission is through CO 2 capture and storage [2] . It involves techniques to collect and separate CO 2 from other gases [3] . Therefore, the development of gas control systems that can perform self‐adaptive regulating behaviors to CO 2 would be helpful [4] .…”

Thermodynamics and Structure–Property Relationships of Charged Block Polymers

“…Charge-containing polymers are used in a diverse array of applications, consequently making them a prominent area of research for the past several decades. Batteries, [1][2][3] fuel cells, [4][5][6] actuators and transducers, [7][8][9][10][11][12][13][14][15] and separation membranes [16][17][18][19][20] are among the continually growing list of useful applications investigated, most of which require dimensional stability. The introduction of charges into polymeric materials often impairs mechanical integrity, depending on the environmental conditions and electrostatic interaction strength, which can result in undesirable aqueous dissolution or brittleness.…”