What question did this study set out to answer?

To synthesize monolithic carbon aerogels from polymer-cross-linked xerogel powders using a fast, energy-efficient method that eliminates the need for supercritical fluid drying.

May 16, 2022Chemistry of Materials

Preparation of Carbon Aerogels from Polymer-Cross-Linked Xerogel Powders without Supercritical Fluid Drying and Their Application in Highly Selective CO2 Adsorption

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Authors

RSRushi U. SoniMissouri University of Science and Technology VEVaibhav A. EdlabadkarCommunity Catalyst DGDaniel M. GreenanUniversity of Illinois Urbana-Champaign

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Implication

Experimental study demonstrates ambient-dried carbon aerogels with high porosity and selective gas uptake, suggesting an energy-efficient pathway for carbon capture materials.

Key Points

To synthesize monolithic carbon aerogels from polymer-cross-linked xerogel powders using a fast, energy-efficient method that eliminates the need for supercritical fluid drying.
Synthesized polymer-cross-linked silica wet gels via surface-initiated polymerization of acrylonitrile or cross-linking with polyurea on functionalized silica particle suspensions.
Dried wet gels under vacuum at 50 °C into xerogel powders, compressed them into discs, carbonized them, and chemically activated the monoliths using hydrofluoric acid and carbon dioxide.
Monolithic carbon aerogels attained total porosities up to 83% v/v and Brunauer–Emmett–Teller surface areas reaching 1934 m2 g–1.
Activated monoliths achieved a carbon dioxide adsorption capacity of up to 9.15 mmol g–1 at 273 K, demonstrating high selectivity over hydrogen, nitrogen, and methane.

Cite This Study

Soni et al. (2022) studied this question.

synapsesocial.com/papers/69dff4ddca6b6a26158603f6 https://doi.org/10.1021/acs.chemmater.1c04170

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Implication

Experimental study demonstrates ambient-dried carbon aerogels with high porosity and selective gas uptake, suggesting an energy-efficient pathway for carbon capture materials.

Preparation of Carbon Aerogels from Polymer-Cross-Linked Xerogel Powders without Supercritical Fluid Drying and Their Application in Highly Selective CO2 Adsorption

Discussion

Member takes

Implication

Key Points

Cite This Study

Preparation of Carbon Aerogels from Polymer-Cross-Linked Xerogel Powders without Supercritical Fluid Drying and Their Application in Highly Selective CO2 Adsorption

Discussion

Member takes

Implication

Key Points

Cite This Study

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