Polycondensation of Bridged Amino-Functionalized Trialkoxysilanes.

<p>The reduction of CO₂ emission has been a worldwide mission to resolve global warming predicament. Mesoporous silsesquioxanes, which stabilized by organobridges and has high content aminon absorption site, can serve as a potential CO₂ adsorbent. Synthesis of such material is done by hydrolysis and polycondensation of trialkoxysilane. The fastest gelation was observed at reaction in the absence of acids or bases. However, addition of surfactant to the reaction mixture catalyzed formation of silsesquioxanes in acidic media. Obtained materials are strongly hydrophilic and possess a high thermostability. Study of particle size distributions showed that in all cases it was bimodal. The largest particles formed in basic media. Mesoporous silsesquioxanes were obtained from bridged alkyltrimethoxysilanes in the presence of surfactants.</p>

Name thesis:degree_name

MS (Master of Science)

Level thesis:degree_level

Thesis - restricted

Discipline thesis:degree_discipline

Chemistry

Year dc:date.issued

2011

Author dc:creator

• Zhou, Guannan

• trialkoxysilanes
• amino group
• surfactant
• bridged silsesquioxanes
• polycondensation
• mesoporous material
• Chemistry
• Environmental Chemistry
• Physical Sciences and Mathematics

Statement dc:rights

• Copyright by the authors.

Repository record dc:identifier

https://dc.etsu.edu/etd/1292

OAI identifier oai:identifier

oai:dc.etsu.edu:etd-2483