skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Attrition resistant gamma-alumina catalyst support

Abstract

A .gamma.-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate .gamma.-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic material thereto, calcining the treated .gamma.-alumina.

Inventors:
; ;
Publication Date:
Research Org.:
Sasol Technology (Uk) Limited
Sponsoring Org.:
USDOE
OSTI Identifier:
1175668
Patent Number(s):
7,011,809
Application Number:
10/851,379
Assignee:
Sasol Technology (Uk) Limited OSTI
DOE Contract Number:
AC22-92 PC92108
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Singleton, Alan H., Oukaci, Rachid, and Goodwin, James G. Attrition resistant gamma-alumina catalyst support. United States: N. p., 2006. Web.
Singleton, Alan H., Oukaci, Rachid, & Goodwin, James G. Attrition resistant gamma-alumina catalyst support. United States.
Singleton, Alan H., Oukaci, Rachid, and Goodwin, James G. Tue . "Attrition resistant gamma-alumina catalyst support". United States. doi:. https://www.osti.gov/servlets/purl/1175668.
@article{osti_1175668,
title = {Attrition resistant gamma-alumina catalyst support},
author = {Singleton, Alan H. and Oukaci, Rachid and Goodwin, James G.},
abstractNote = {A .gamma.-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate .gamma.-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic material thereto, calcining the treated .gamma.-alumina.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 14 00:00:00 EST 2006},
month = {Tue Mar 14 00:00:00 EST 2006}
}

Patent:

Save / Share:
  • A catalyst support having improved attrition resistance and a catalyst produced therefrom. The catalyst support is produced by a method comprising the step of treating calcined .gamma.-alumina having no catalytic material added thereto with an acidic aqueous solution having an acidity level effective for increasing the attrition resistance of the calcined .gamma.-alumina.
  • A method of preparing a steam reforming catalyst characterized by improved resistance to attrition loss when used for cracking, reforming, water gas shift and gasification reactions on feedstock in a fluidized bed reactor, comprising: fabricating the ceramic support particle, coating a ceramic support by adding an aqueous solution of a precursor salt of a metal selected from the group consisting of Ni, Pt, Pd, Ru, Rh, Cr, Co, Mn, Mg, K, La and Fe and mixtures thereof to the ceramic support and calcining the coated ceramic in air to convert the metal salts to metal oxides.
  • This patent describes an attrition resistant catalytic cracking catalyst. It comprises: a molecular sieve dispersed in a matrix comprising a clay and a synthetic silica-alumina component. The catalyst made by the process comprises: combining the molecular sieve with the clay, a silica sol and aluminum chlorhydroxide to form a mixture consisting essentially of the molecular sieve, the clay, the silica sol and the aluminum chlorhydroxide; and drying the mixture to produce the attrition resistant catalyst.
  • Slurry-rheological measurements, fluidized bed attrition studies, and microreactivity tests (MAT) were used to evaluate fluid cracking catalyst formulations containing Alcoa's rehydration bondable CP alumina powder. When process variables, including viscosity, pH, batch holding time, and alumina particle size, are controlled, spray dried material incorporating CP alumina is more attrition resistant than the alumina-free reference. Macrostructure of the spheres is more uniform than some commercial catalysts. MAT results for the catalytic cracking of gas oil show that the ReY based catalyst has about 81 v/o conversion before and 54 v/o after Ni+V poisoning. This contrasts with the values of 78 andmore » 34 for the reference catalyst without the alumina. Before poisoning, selectivity for the gasoline fraction is comparable to a commercial catalyst.« less
  • Sulfur-containing petroleum hydrocarbon fractions are treated at hydrodesulfurization reaction conditions in contact with a catalytic composite of a Group VIII metal or metal oxide, a Group VIB metal or metal oxide, and an alumina support or carrier material. The alumina carrier material is characterized by a method of preparation which results in improved hydrodesulfurization activity of the catalytic composite. The carrier material is formed by the gelation of a hydrosol prepared by dissolving a basic aluminum sulfate in an aluminum chloride hydrosol.