Catalytic process for hydrocarbon cracking using synthetic mesoporous crystalline material
A process is described for catalytic cracking of naphtha feedstock which comprises contacting feedstock containing at least 20 wt % C7-C12 alkanes under catalytic reaction conditions with inorganic, porous, non-layered crystalline phase catalyst material exhibiting, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than 18 Angstrom units and having a benzene adsorption capacity greater than 15 grams of benzene per 100 grams of said material at 50 torr and 25 C, said catalyst material having active Bronsted acid sites; and wherein said cracking conditions include total pressure up to 500 kPa and reaction temperature of 425 to 650 C for less than 50 wt % partial feedstock cracking; thereby producing cracking effluent containing at least 20 wt % isomeric C4-C5 aliphatics including at least 10 wt % C4-C5 tertiary alkene, and at least 10 wt % C4-C5 isoalkane, based on C[sub 5[minus]] conversion product, with less than 20 wt % aromatics in the total cracking effluent; separating cracking effluent to obtain an aliphatic fraction rich in tertiary C4-C5 alkene and a C6+ fraction; and etherifying the C4-C5 tertiary alkene by catalytic reaction with C[sub 1]-C[sub 4] lower alkanol to produce tertiary-alkyl ether product.
- Assignee:
- Mobil Oil Corp., Fairfax, VA (United States)
- Patent Number(s):
- US 5232580; A
- Application Number:
- PPN: US 7-719205
- OSTI ID:
- 6160919
- Resource Relation:
- Patent File Date: 21 Jun 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
10 SYNTHETIC FUELS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
SURFACE PROPERTIES
ETHERS
SYNTHESIS
FUEL ADDITIVES
NAPHTHA
HYDROCRACKING
ALKANES
ALKENES
AROMATICS
BENZENE
CALCINATION
MOLECULAR WEIGHT
PH VALUE
SEPARATION PROCESSES
SORPTIVE PROPERTIES
X-RAY DIFFRACTION
ADDITIVES
CHEMICAL REACTIONS
COHERENT SCATTERING
CRACKING
DECOMPOSITION
DIFFRACTION
DISTILLATES
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PYROLYSIS
SCATTERING
THERMOCHEMICAL PROCESSES
020400* - Petroleum- Processing
100200 - Synthetic Fuels- Production- (1990-)
400201 - Chemical & Physicochemical Properties