Matrix acidity determination: A bench scale method for predicting resid cracking of FCC catalysts

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00041a002· OSTI ID:6471900

Alerasool, S; Doolin, P K; Hoffman, J F ^[1]

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1. Ashland Petroleum Co., KY (United States). Research and Development Dept.

Novel methods for determination of matrix acidity of cracking catalysts are discussed. Virgin matrix acidity is determined after complete destruction of the zeolite phase by acid treating the catalyst at pH 2. Properties of acid-treated catalyst closely approximate those of pure matrix. However, the virgin matrix acidity does not correlate with resid cracking performance of the catalyst under commercial or pilot plant conditions. A second method has been developed that facilitates the measurement of matrix acidity on a laboratory deactivated sample with properties similar to that in the commercial cracking unit. The approach is based on total destruction of the zeolite by steaming at 870 C for 5 h. Acidity of the steamed catalyst closely resembles that of steamed pure matrix and has a good correlation with the resid cracking activity in the pilot plant testing. Preservation of matrix acid sites during hydrothermal deactivation was shown to be an important requirement for achieving high resid cracking activity.

• OSTI ID: 6471900
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 34:2; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYST SUPPORTS
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CORRELATIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PH VALUE
PYROLYSIS
SILICATE MINERALS
THERMOCHEMICAL PROCESSES
ZEOLITES