Deactivation and regeneration of hydrogenolysis activity over Rh-Ag bimetallic catalysts supported on TiO/sub 2/
Conference
·
OSTI ID:6771266
An indirect effect of support on the kind of bimetallic interaction was observed on Rh-Ag catalysts supported on TiO/sub 2/ compared to SiO/sub 2/. This effect occurs at significantly lower temperatures than the direct Strong Metal-Support Interaction (SMSI) between Rh and TiO/sub 2/. The main feature of this indirect effect is a pronounced decay in the H/sub 2/ chemisorption capability and activity for ethane hydrogenolysis with time when the catalysts are left in flowing H/sub 2/ at 523K. This behavior can be rationalized in terms of a modification of the energetics of the metal-metal interaction, which may cause the Ag to spread over Rh particles. Hydrogenolysis activity and H/sub 2/ chemisorption capacity can be regenerated by an oxidation-reduction treatment.
- Research Organization:
- Yale Univ., New Haven, CT (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- AC02-81ER10829
- OSTI ID:
- 6771266
- Report Number(s):
- CONF-821106-6; ON: DE82021240
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydrogen adsorption behavior and strong metal-support interaction (SMSI) on Rh-Pt bimetallic catalysts
Selectivity, activity, and metal-support interactions of Rh bimetallic catalysts. Progress report, 15 November 1981-15 August 1982
Selectivity, activity and metal-support interactions of Group VIII bimetallic catalysts. Progress report, 15 August 1983-15 August 1984
Thesis/Dissertation
·
Tue Dec 31 23:00:00 EST 1985
·
OSTI ID:7183190
Selectivity, activity, and metal-support interactions of Rh bimetallic catalysts. Progress report, 15 November 1981-15 August 1982
Technical Report
·
Sun Aug 01 00:00:00 EDT 1982
·
OSTI ID:6900030
Selectivity, activity and metal-support interactions of Group VIII bimetallic catalysts. Progress report, 15 August 1983-15 August 1984
Technical Report
·
Wed Aug 01 00:00:00 EDT 1984
·
OSTI ID:6594763
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COMPARATIVE EVALUATIONS
DATA
DEACTIVATION
ELEMENTS
ETHANE
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGEN
HYDROGENATION
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
QUANTITY RATIO
REGENERATION
RHODIUM
SEPARATION PROCESSES
SILVER
SORPTION
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COMPARATIVE EVALUATIONS
DATA
DEACTIVATION
ELEMENTS
ETHANE
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGEN
HYDROGENATION
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
QUANTITY RATIO
REGENERATION
RHODIUM
SEPARATION PROCESSES
SILVER
SORPTION
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS