Method for measuring the relative catalytic activity of carbonaceous chars
AssigneeCalgon Carbon Corporation
InventorsRichard A. Hayden, Thomas M. Matviya
Life of this patent
Estimating the term…
Abstract
A method is provided for evaluating the catalytic activity of carbonaceous chars via the decomposition of hydrogen peroxide in contact with such materials. In this method the rise in temperature occasioned by the decomposition of hydrogen peroxide under essentially adiabatic conditions is monitored as a function of time. By use of this method, carbonaceous chars having high catalytic activities may be rapidly and conveniently identified.
Claims12
A method for establishing an index of catalytic activity for a carbonaceous char for the purpose of comparing the relative catalytic activity between carbonaceous chars said method comprising:
- (a) combining a carbonaceous char with a material that undergoes an exothermic reaction, said reaction being catalyzed by the presence of said char to provide a temperature rise;
- (b) determining said temperature rise from initiation of said reaction by measuring temperature as a function of elapsed time from the initiation of said reaction to a maximum temperature of said reaction;
- (c) establishing an index of catalytic activity for said carbonaceous chars by determining the minimum time required for said temperature rise to achieve a predetermined temperature which is less than or equal to said maximum temperature, wherein said minimum time to achieve temperature is said index of catalytic activity for said carbonaceous char.
Dependencies are inferred from the claim text.