Octane boosting potential of catalytic processing of reformate over shape-selective zeolites
Conversion of 1:1 by wt blends of benzene with n-pentane, n-octane, n-dodecane, or n-hexadiene at 600/sup 0/F and 700 psi demonstrated the efficiency with which the shape-selective ZSM-5 zeolite can produce alkylaromatics from mixed n-paraffin/aromatic feeds by selectively admitting aromatics into its ten-ring pore structure and efficiently combining them with the olefinic fragments of paraffin cracking. The efficiency increased with paraffin molecular weight, so that with hexadecane, almost 80% of the paraffin converted was consumed in alkylation. With n-octane, the main products were C/sub 3/-C/sub 5/ paraffins (23.7% by wt) and C/sub 9/+ alkylaromatics (41%). Processing of an actual C/sub 5/-C/sub 7/ mid-continent light reformate at 651/sup 0/F and 500 psi increased the C/sub 6/+ research octane number of the feed from 85.7 to 98.5. Normal paraffins were preferentially converted, particularly those of highest molecular weight. The gaseous products were mainly C/sub 3/-C/sub 4/ paraffins. Benzene was alkylated more rapidly than toluene.
- Research Organization:
- Mobil Res. Dev. Corp.
- OSTI ID:
- 6416023
- Report Number(s):
- CONF-800303-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 25:1; Conference: 179. national meeting of the American Chemical Society, Houston, TX, USA, 23 Mar 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALKANES
CRACKING
EFFICIENCY
ZEOLITES
SPECIFICITY
ALKENES
ALKYLATION
ANTIKNOCK RATINGS
AROMATICS
BENZENE
CHEMICAL FEEDSTOCKS
CHEMICAL REACTION YIELD
DIENES
DODECANE
EXPERIMENTAL DATA
GAS YIELDS
HEXADECANE
HIGH TEMPERATURE
MEDIUM PRESSURE
MICROSTRUCTURE
MIXTURES
MOLECULAR WEIGHT
OCTANE
PENTANE
POROSITY
QUANTITY RATIO
SHAPE
TOLUENE
ALKYLATED AROMATICS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DECOMPOSITION
DISPERSIONS
HYDROCARBONS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
POLYENES
PYROLYSIS
THERMOCHEMICAL PROCESSES
YIELDS
020400* - Petroleum- Processing