SYNTHESIS AND CHARACTERIZATION OF TS-48, A TITANIUM-CONTAINING SILICAANALOG OF ZSM-48

Citation
Km. Reddy et al., SYNTHESIS AND CHARACTERIZATION OF TS-48, A TITANIUM-CONTAINING SILICAANALOG OF ZSM-48, Catalysis letters, 23(1-2), 1994, pp. 175-187
Citations number
33
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
1011372X
Volume
23
Issue
1-2
Year of publication
1994
Pages
175 - 187
Database
ISI
SICI code
1011-372X(1994)23:1-2<175:SACOTA>2.0.ZU;2-F
Abstract
Crystalline titanium containing silica analog of ZSM-48 (TS-48) sample s were synthesized using soluble peroxytitanate, fumed silica and diam ino octane. All samples were characterized using a variety of techniqu es including XRD, IR, AAS, SEM, UV-Vis, XANES and catalytic testing in hydroxylation of phenol. Data suggest that titanium in these material s is linked to the framework. However, it was impossible to incorporat e more than about 2 wt% Ti in the zeolite lattice. TS-48 samples prepa red by this method had no activity for hydroxylation of phenol in the presence of hydrogen peroxide. The lack of activity of this material e ven though it showed all of the regular characteristics of other catal ytically active titanium silicalites (i.e., TS-1 and TS-2) could be du e either to diffusional limitations or to subtle differences ir. titan ium environment.