Novel method of testing a charge calcined alumina to determine i

Details Novel method of testing a charge calcined alumina to determine i Novel method of testing a charge calcined alumina to determine i

1979-01-05

1980-11-04

Turk, Arnold

Chemistry: physical processes

Physical processes

Crystallization

G01N 2104, G01N 3102

Patent

active

042317517

ABSTRACT:
Alkylaromatic charge hydrocarbons such as toluene are steam dealkylated in the presence of catalyst which typically contains oxides of nickel, chromium, and potassium on an activated high-purity alumina. It is a feature of this invention that the high-purity alumina is activated by calcining followed by addition thereto of alkaline earth metal such as calcium or magnesium. A test is disclosed according to which it may be determined which high-purity aluminas are suitable for use.

REFERENCES:
patent: 2881051 (1959-04-01), Pingard
patent: 2928792 (1960-03-01), Bertolacini
patent: 3249557 (1966-05-01), Oleck
patent: 3787183 (1974-01-01), Kennedy, Jr.
patent: 3846287 (1974-11-01), Jaffe et al.
Osment, "Active Aluminas as Catalyst Supports for Treatment of Automotive Exhaust Emissions"; Society of Automotive Engineers, International Automotive Engineering Congress, Detroit, Mich., Jan. 8-12, 1973.

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