Influence of the conditions of preparation on the catalytic properties of A1-pillared montmorillonites

Conference · Sat Aug 01 00:00:00 EDT 1987 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:5404701

Tichit, D; Fajula, F; Figueras, F; Gueguen, C; Bousquet, J ^[1]

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1. CNRS ENSCM, Montpellier (France)

Pillared clays (PILC) are obtained by exchanging the original cations of a smectite by inorganic cationic polymers. The size of the pillaring species determines the porosity of the resulting material. Pore openings of 8-17 {angstrom} can me obtained with many cations, including A1, Zr, Cr, and Ti. The interest in PILC was heightened by the report that they are more active than Y zeolites for bulky molecules. Indeed, Lussier et al. observed good activity for cracking of heavy gas oil. Clays produced less gasoline than zeolites, but the octane number was higher. Occelli reports a gasoline yield comparable to that of zeolites using a lighter charge stock. The high selectivity for coke was attributed to iron impurities by Lussier et al., but Occelli found no influence of the iron content of the clay on the coke make. The thermal stability is apparently controlled by small details of the preparation, since clear differences appear between A1-PILC or Zr-PILC, according to the authors. We present here a synthesis concerning our work on preparation, characterization and testing of montmorillonites pillared by A1{sub 13} polymers, including the influence of particle size of the original clay on the properties of the resulting PILC.

• OSTI ID: 5404701
• Report Number(s): CONF-8708311--
• Journal Information: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA), Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Vol. 32:3; ISSN 0569-3799; ISSN ACPCA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYSIS
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CLAYS
CRACKING
DATA
DEACTIVATION
DECOMPOSITION
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GAS OILS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MONTMORILLONITE
NUMERICAL DATA
PARTICLE SIZE
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
POLYMERS
PYROLYSIS
SIZE
STEAM
SYNTHESIS
THERMOCHEMICAL PROCESSES