A novel combining strategy of cellulose aerogel and hierarchically porous metal organic frameworks (HP-MOFs) to improve the CO2 absorption performance

Abstract

while the adsorption selectivity of CO 2 continuously increased. Among all samples, MC-HUN-4 with a moderate pore size had the highest CO 2 adsorption capacity (1.90 mmol/g at 298 K and 1 bar) and adsorption selectivity (13.02 and 2.40 for CO 2 /N 2 and CO 2 /CH 4 ). The combination with a cellulose aerogel endowed MC-HUN-X with excellent mechanical stability and reusability.

Porous Cu-BTC Metal–Organic Frameworks Anchored on Dialdehyde Wood Sponge as Material for CO2 Capture and Separation

“…Nevertheless, the value of adsorption heats for both fall within the 20–23 and 44–47 kJ/mol ranges, exhibiting relatively small fluctuations. The variation of Q st in the initial low adsorption range provides insights into the uniformity of the surface; a smaller fluctuation in Q st indicates higher uniformity of the adsorption sites. , Because of the strong binding ability of the hydroxyl group to carbon dioxide, the HKUST-1/DWS with a low hydroxyl content has a lower enthalpy of adsorption. A lower Q st value suggests a weaker binding strength, facilitating physical desorption and benefiting material reuse.…”

Directional porous polyimide/polyethylene glycol composite aerogel with enhanced CO2 uptake performance

“…The reason is that the adsorbed CO 2 occupies the alkaline active site of the aerogel and cannot be completely desorbed, resulting in the lowering of the CO 2 adsorption capacity of the aerogel. 46 The selective adsorption of CO 2 /N 2 is an important criterion to evaluate the CO 2 adsorption performance. 47 Through Henry’s law constant method, the value of relative pressure at 0–0.2 bar is linearly fitted, and the value of CO 2 /N 2 selective adsorption of L-PI/PEG-4 at 25°C is 11.1, as shown in Figure 7(c).…”

Incorporation of Cellulose-Based Aerogels into Textile Structures

“…Concurrently, the adsorption selectivity for CO 2 consistently grew. Notably, among all of the samples, MC-HUN-4, distinguished by a moderate pore size, exhibited the highest CO 2 adsorption capacity (1.90 mmol/g at 298 K and 1 bar) and superior adsorption selectivity (13.02 and 2.40 for CO 2 /N 2 and CO 2 /CH 4 ) [ 276 ]. Zhou et al applied a sol–gel method to create composite aerogels (CSA) by using silica from skimmed cotton and cellulose whiskers.…”