Work

Influence of Starting Composition and Gelation Temperature on the Ratio between Meso‐ and Macropore Volume in Silica Xerogels with Bimodal Pore Structure

Year: 2024

Type: article

Abstract: The impact of gelation temperature and starting composition (solvent, silica, and polymer content) on the pore structure of silica xerogels with bimodal meso‐/macropore structure is explored. Using statistical regression models, precise control over the pore structure is demonstrated, a challenge in previous studies. Higher gelation temperatures and increased polyethylene oxide (PEO) content enhance the mesopore volume, while higher solvent content and reduced polymer content increase the macropore volume. The ratio of mesopore to macropore volume can be effectively adjusted, facilitating the design of xerogels with tailored properties. These findings optimize silica xerogels with bimodal pore structure for applications in catalysis, thermal insulation, and other advanced technologies.

Source: Chemie Ingenieur Technik

DOI: 10.1002/cite.202400099

Authors: Kai Müller, Christian Andres, Simon Kunwald, Tim Jähnichen, Dirk Enke

Institution: Leipzig University

Language: English

Topic: Mesoporous Materials and Catalysis

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,840

Funder: Deutsche Forschungsgemeinschaft