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

Journal Article · Wed Oct 01 00:00:00 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), Vol. 65:2
• Country of Publication: United States
• Language: English

Related Subjects

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