Extending catalyst life by treating with phosphorus and/or steam
Patent
·
OSTI ID:6666105
There is disclosed a method for decreasing catalyst coking and extending the usable catalyst life by pre-treatment of the catalyst with steam and/or a phosphorus-containing compound. Catalysts benefiting from such pre-treatment comprise crystalline zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index, as herein defined, within the approximate range of 1 to 12.
- Assignee:
- Mobil Corp.
- Patent Number(s):
- US 4356338
- OSTI ID:
- 6666105
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBONIZATION
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
COKING
CRACKING
CRYSTALS
DECOMPOSITION
DEPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INHIBITION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
OPTIMIZATION
PETROLEUM
PHOSPHORUS COMPOUNDS
PYROLYSIS
SERVICE LIFE
STEAM
THERMOCHEMICAL PROCESSES
ZEOLITES
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBONIZATION
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
COKING
CRACKING
CRYSTALS
DECOMPOSITION
DEPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INHIBITION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
OPTIMIZATION
PETROLEUM
PHOSPHORUS COMPOUNDS
PYROLYSIS
SERVICE LIFE
STEAM
THERMOCHEMICAL PROCESSES
ZEOLITES