Mesoporous Functionalized Materials for Post-Combustion Carbon Dioxide Capture.

<p>Novel highly functionalized hybrid organic-inorganic materials were synthesized by polycondensation of bis[3-(trimethoxysilyl)propyl]amine in presence of cationic and anionic surfactants. Reaction media strongly affected gelation time. Thus, in basic media gelation occurred immediately while acid increased gelation time. Material structures were studied by IR spectroscopy, porosimetry, XRD, and SAXS methods. In spite of the absence of an inorganic linker, obtained bridged silsesquioxanes had mesoporous structure. A material prepared in the presence of dodecylamine as a template had higher surface area and narrow pore size distribution while the use of sodium dodecylbenzene sulfate resulted in formation of mesopores with wide size ranges. Accessibility of surface amine groups in silsesquioxanes was studied for molecules of acidic nature and different sizes: HCl, CO₂ and picric acid. High contents of accessible amine groups in these materials make them prospective adsorbents for post-combustion CO₂ capture.</p>

Name thesis:degree_name

MS (Master of Science)

Level thesis:degree_level

Thesis - unrestricted

Discipline thesis:degree_discipline

Chemistry

Year dc:date.issued

2011

Author dc:creator

• Ojo, Kolade Omoniyi

• X-ray diffraction
• Amine groups
• Mesoporous materials
• Sol-gel
• Hybrid organic-inorganic materials
• Carbon dioxide
• Small angle X-ray scattering
• Chemistry
• Materials Chemistry
• Physical Sciences and Mathematics

Statement dc:rights

• Copyright by the authors.

Repository record dc:identifier

https://dc.etsu.edu/etd/1378

OAI identifier oai:identifier

oai:dc.etsu.edu:etd-2569