Impact of catalyst acid/metal balance in hydroisomerization of normal paraffins
Journal Article
·
· AIChE Journal (American Institute of Chemical Engineers); (United States)
- Mobil Research and Development Corp., Paulsboro, NJ (United States)
The hydroisomerization of n-heptane has been used as a model to study the acid-metal balance requirements for Pt/zeolite catalysts. Experiments were carried out using physical mixtures of zeolite beta and Pt/Al[sub 2]O[sub 3] particles, in which the level of the metal-containing component was varied to change the acid-metal balance. Selectivity, in terms of cracking vs. isomerization, varies significantly with the metal loading up to a point beyond which the degree of paraffin isomerization is independent of metal loading. These results are interpreted in terms of a simple dual-site model based on a classical theory of polyfunctional catalysis, first advanced by Weisz (1962). The model is also used to show how an imbalance in hydrogenation and acid functions can even alter the apparent reaction network of the observable chemical species in the system.
- OSTI ID:
- 6826905
- Journal Information:
- AIChE Journal (American Institute of Chemical Engineers); (United States), Journal Name: AIChE Journal (American Institute of Chemical Engineers); (United States) Vol. 39:4; ISSN 0001-1541; ISSN AICEAC
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020400* -- Petroleum-- Processing
ABUNDANCE
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
HEPTANE
HYDROCARBONS
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERIZATION
MATERIALS
MATHEMATICAL MODELS
METALS
MINERALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PLATINUM
PLATINUM METALS
PYROLYSIS
SILICATE MINERALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
ZEOLITES
020400* -- Petroleum-- Processing
ABUNDANCE
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
HEPTANE
HYDROCARBONS
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERIZATION
MATERIALS
MATHEMATICAL MODELS
METALS
MINERALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PLATINUM
PLATINUM METALS
PYROLYSIS
SILICATE MINERALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
ZEOLITES