Adedigba, A-L;
Sankar, G;
Catlow, CRA;
Du, Y;
Xi, S;
Borgna, A;
(2017)
On the synthesis and performance of hierarchical nanoporous TS-1 catalysts.
Microporous and Mesoporous Materials
, 244
pp. 83-92.
10.1016/j.micromeso.2017.02.048.
Preview |
Text
Adedigba_MICMAT-D-16-01210-Adedigba et al - Revised.pdf - Accepted Version Download (8MB) | Preview |
Abstract
Hierarchical TS-1 zeolite was successfully prepared using chitosan as a sacrificial template. The X-ray diffraction showed that the presence of chitosan with the synthesis precursor had no deleterious effect on the crystallinity and phase purity of this zeolite. X-ray absorption spectroscopy at the Ti K-edge, FTIR and Raman spectroscopies revealed the titanium ions in the zeolite structure have predominantly tetrahedral coordination. However, it appears that the higher chitosan content in the synthesis gel imparted some hydrophilic character to the TS-1 system. Furthermore, the technique adopted for the preparation of the synthesis gel – e.g partially dried or fully dried – appears to affect the amount of framework titanium in the zeolite structure. The calcined form of the chitosan templated TS-1 zeolites exhibited higher cyclohexene conversion compared to the TS-1 material synthesised without this template, but these catalysts showed lower selectivity for cyclohexene epoxide.
| Type: | Article |
|---|---|
| Title: | On the synthesis and performance of hierarchical nanoporous TS-1 catalysts |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.micromeso.2017.02.048 |
| Publisher version: | https://doi.org/10.1016/j.micromeso.2017.02.048 |
| 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. |
| Keywords: | Hierarchical TS-1, Chitosan, Cyclohexene epoxidation, Hydrogen peroxide, XANES, Hydrophobic, Hydrophilic |
| UCL classification: | UCL 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.ucl.ac.uk/id/eprint/10066140 |
Archive Staff Only
 |
View Item |
