| Title | Direct Spectroscopic Evidence for Isolated Silanols in SiOx/Al2O3 and Their Formation Mechanism |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Mouat, AR, Kobayashi, T, Pruski, M, Marks, TJ, Stair, PC |
| Journal | Journal of Physical Chemistry C |
| Volume | 121 |
| Pagination | 6060-6064 |
| Date Published | 03 |
| Type of Article | Article |
| ISBN Number | 1932-7447 |
| Accession Number | WOS:000397546300024 |
| Keywords | aluminas, aluminosilicates, amorphous, bronsted acid sites, catalysts, chemistry, dynamic nuclear-polarization, hydrocracking, Materials Science, quantification, silica, surface, Technology - Other Topics, water |
| Abstract | pted as a postgrafting treatment for CLD. Insight into the formation mechanism of these sites is obtained via in situ monitoring of the TEOS + gamma-Al2O3 reaction in an environmental diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) cell. Upon calcination, the DRIFTS spectra of SiOx/Al2O3 reveal a signature unambiguously assignable to isolated Bronsted-acidic silanol species. Surprisingly, the results of this study indicate that the method of preparing SiOx/Al2O3 catalysts is less important to the final structure of the silanol sites than the post-treatment conditions. This finding should greatly simplify the methods for synthesizing site-isolated, Bronsteciacidic SiOx/Al2O3 catalysts. |
| DOI | 10.1021/acsjpcc.6b11196 |
| Custom 1 | 3D Catalysis |
| Alternate Journal | J. Phys. Chem. C |
