{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T20:01:05Z","timestamp":1784404865376,"version":"3.55.0"},"reference-count":56,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T00:00:00Z","timestamp":1722902400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"German Helmholtz Association"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Membranes"],"abstract":"<jats:p>Hydrotalcite exhibits the capability to adsorb CO2 at elevated temperatures. High surface area and favorable coating properties are essential to harness its potential for practical applications. Stable alcohol-based dispersions are needed for thin film applications of mixed membranes containing hydrotalcite. Currently, producing such dispersions without the need for delamination and dispersing agents is a challenging task. This work introduces, for the first time, a manufacturing approach to overcoming the drawbacks mentioned above. It includes a synthesis of hydrotalcite nanoparticles, followed by agent-free delamination of their layers and final dispersion into alcohol without dispersing agents. Further, the hydrotalcite-derived sorption agent is dispersed in a matrix based on organo-silica gels derived from 1,2-bis(triethoxysilyl)ethane (BTESE). The analytical results indicate that the interconnection between hydrotalcite and BTESE-derived gel occurs via forming a strong hydrogen bonding system between the interlayer species (OH groups, CO32\u2212) of hydrotalcite and oxygen and silanol active gel centers. These findings lay the foundation for applications involving incorporating hydrotalcite-like compounds into silica matrices, ultimately enabling the development of materials with exceptional mass transfer properties. In part 2 of this study, the gas separation performance of the organo-silica and the hydrotalcite-like materials and their combined form will be investigated.<\/jats:p>","DOI":"10.3390\/membranes14080170","type":"journal-article","created":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T08:07:59Z","timestamp":1722931679000},"page":"170","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Mixed-Matrix Organo-Silica\u2013Hydrotalcite Membrane for CO2 Separation Part 1: Synthesis and Analytical Description"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-2094-9115","authenticated-orcid":false,"given":"Lucas","family":"B\u00fcnger","sequence":"first","affiliation":[{"name":"Institute for Technical Chemistry, Karlsruhe Institute of Technology, 76344 Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3303-5168","authenticated-orcid":false,"given":"Krassimir","family":"Garbev","sequence":"additional","affiliation":[{"name":"Institute for Technical Chemistry, Karlsruhe Institute of Technology, 76344 Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angela","family":"Ullrich","sequence":"additional","affiliation":[{"name":"Institute for Technical Chemistry, Karlsruhe Institute of Technology, 76344 Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1887-6057","authenticated-orcid":false,"given":"Peter","family":"Stemmermann","sequence":"additional","affiliation":[{"name":"Institute for Technical Chemistry, Karlsruhe Institute of Technology, 76344 Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6499-062X","authenticated-orcid":false,"given":"Dieter","family":"Stapf","sequence":"additional","affiliation":[{"name":"Institute for Technical Chemistry, Karlsruhe Institute of Technology, 76344 Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"B\u00fcnger, L., Kurtz, T., Garbev, K., Stemmermann, P., and Stapf, D. 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