FT-IR ANALYSIS OF BORATE-PROMOTED NI-MO AL2O3 HYDROTREATING CATALYSTS/

Authors
DECANIO EC WEISSMAN JG
Citation
Ec. Decanio et Jg. Weissman, FT-IR ANALYSIS OF BORATE-PROMOTED NI-MO AL2O3 HYDROTREATING CATALYSTS/, Colloids and surfaces. A, Physicochemical and engineering aspects, 105(1), 1995, pp. 123-132
Citations number
23
Categorie Soggetti
Chemistry Physical
Journal title
Colloids and surfaces. A, Physicochemical and engineering aspects → ACNP
ISSN journal
09277757
Volume
105
Issue
1
Year of publication
1995
Pages
123 - 132
Database
ISI
SICI code
0927-7757(1995)105:1<123:FAOBNA>2.0.ZU;2-Y
Abstract
A series of boron-modified commercial Ni-Mo/Al2O3 hydrotreating cataly sts have been characterized by IR analysis of adsorbed NO and pyridine and by gas-oil sulfur- and nitrogen-removal activities. Sulfur remova l activity was found to correlate with the 1690 cm(-1) (Mo(NO)(2)(2+)) band in the NO adsorption spectra. Nitrogen removal activity was foun d to be dependent on support Bronsted acidity as measured by the densi ty of the pyridinium band at 1540 cm(-1) in the pyridine adsorption sp ectra. At higher boron loadings, over 1.8 wt.% boron, the presence of bulk berate phases results in poor catalytic performance.