Method for reducing the chemical conversion of oxidizable or disproportionable compounds contacting carbonaceous chars

摘要

A method is provided for reducing the chemical conversion of oxidizable or disproportionable compounds contained in liquid or gaseous process media which contact carbonaceous chars. In this method the carbonaceous char contacting the oxidizable or disproportionable compounds is first treated with a non-nitrogen-containing Bronsted acid. The acid-treated char is then heated to temperatures greater than 750° C. In this manner the inherent catalytic reactivity of the carbon in the char is reduced effectively and largely irreversibly.