Preparation of supported platinum-gold, platinum-tin, and rhodium-copper catalysts and some tests with n-hexane/hydrogen reactant
Fifty-nine catalysts were prepared from chlorides and nitrates by impregnation of silica to give 4 or 8% loading. The catalysts were dried or calcined under various conditions and reduced with hydrogen or hydrazine at various conditions. The catalysts were characterized by X-ray diffraction, electron microscopy, and the pulsed reaction of n-hexane with hydrogen. The results show that there is no significant alloying of platinum and gold but that the two metals interact and give, e.g., a greater ratio of destructive-to-nondestructive hydrogen reactions at low temperatures than pure platinum; that 15% rhodium-copper does not alloy well but that a rhodium-rich phase formed and that this catalyst produced significant amounts of cyclic products, i.e., the addition of copper to rhodium decreases the destructive-to-nondestructive reaction ratio.
- Research Organization:
- Univ. Coll., Dublin
- OSTI ID:
- 5140381
- Journal Information:
- J. Catal.; (United States), Vol. 54:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPPER ALLOYS
CHEMICAL PREPARATION
GOLD ALLOYS
PLATINUM ALLOYS
RHODIUM ALLOYS
TIN ALLOYS
CATALYST SUPPORTS
CATALYSTS
CHEMICAL REACTION KINETICS
HEXANE
HYDROGEN
ALKANES
ALLOYS
ELEMENTS
HYDROCARBONS
KINETICS
NONMETALS
ORGANIC COMPOUNDS
PLATINUM METAL ALLOYS
REACTION KINETICS
SYNTHESIS
360101* - Metals & Alloys- Preparation & Fabrication
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)