Specific surface area of molybdena in MoO/sub 3//SiO/sub 2/ catalysts

Journal Article · Wed Oct 01 04:00:00 EDT 1980 · J. Catal.; (United States)

OSTI ID:6223449

Garcia Fierro, J L; Weller, S W; Mendioroz, S; Pajares, J A

Specific surface area of molybdena in MoO/sub 3//SiO/sub 2/ catalysts, determined by the oxygen adsorption method, showed 101-107 sq m/g for catalysts containing 4.8-13.0% molybdena, compared with 50.8-56.7 sq m/g for unsupported molybdena. The particle size for the 13% molybdena catalyst was 69 A., compared with 25 A. for a 15% molybdena catalyst on alumina, which interacts more strongly with the molybdena. X-ray diffraction data of the 13% molybdena/silica catalyst showed 203 A. owing to the greater effect of large particles in this method. The equivalent molybdena areas for the silica-supported catalysts increased from approx. 7 sq m/g for the 4.8% molybdena catalyst to approx. 15 sq m/g for the 13% molybdena catalyst which corresponded to a low coverage (131 sq m/g silica area).

• Research Organization: Inst. Catal. Petroleoquim. Cons. Super. Invest. Cient., Madrid
• OSTI ID: 6223449
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 65:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
COHERENT SCATTERING
COMPARATIVE EVALUATIONS
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
REFRACTORY METAL COMPOUNDS
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SURFACE AREA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION