Elimbinzi, E;
Nyandoro, SS;
Mubofu, EB;
Osatiashtiani, A;
Manayil, JC;
Isaacs, MA;
Lee, AF;
(2018)
Synthesis of amine functionalized mesoporous silicas templated by castor oil for transesterification.
In:
(pp. pp. 2261-2269).
Materials Research Society
Preview |
Text
Synthesis_of_Amine_Functionalized_Mesoporous_Silicas_Templated_by_Castor_Oil_for_Transesterification.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Mesoporous silicas were synthesized via a surfactant-templated sol-gel route using castor oil as the templating agent under acidic medium. The resulting silicas were subsequently amine functionalized with 3-aminopropyltriethoxysilane (NH2-MTS), [3-(2-aminoethylamino)-propyl]trimethoxysilane (NN-MTS), and [3-(diethylamino)propyl]trimethoxysilane(DN-MTS) to introduce surface basicity. Surface physicochemical properties were characterized by field emission gun scanning electron microscopy (FEGSEM), nitrogen porosimetry, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and diffuse reflectance infrared fourier transform spectroscopy (DRIFTS). As-synthesised materials exhibit type IV adsorption-desorption isotherms characteristic of mesoporous structures. Clusters of spherical shaped materials were observed by FEGSEM, suggesting growth of silica occurs within colloidal dispersions. High-resolution N 1s XP spectra and DRIFT spectra confirmed the presence of amine groups in the organo-amine functionalised mesoporous silicas. The amine functionalised mesoporous silicas were active for the transesterification of tributyrin with methanol, with conversion found to increase from NH2-MTS< NN-MTS< DN-MTS.
| Type: | Proceedings paper |
|---|---|
| Title: | Synthesis of amine functionalized mesoporous silicas templated by castor oil for transesterification |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1557/adv.2018.347 |
| Publisher version: | https://doi.org/10.1557/adv.2018.347 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10069261 |
Archive Staff Only
 |
View Item |
