| 摘要 |
<p>An improved process is provided for the manufacture of a catalytically-active carbonaceous char capable of rapidly decomposing hydrogen peroxide in aqueous solutions. The process of the invention uses a low temperature carbonization and extensive oxidation of a bituminous coal or bituminous coal-like material followed by exposure to a nitrogen-containing compound at high temperatures during the initial calcination and/or activation. The resultant catalytically-active chars have the ability to rapidly decompose aqueous solutions of hydrogen peroxide and are useful for catalytic conversion of H2S, SOx, NOx, chloramines, and/or peroxides in liquid and/or gaseous streams. The catalytic activity of the char can be measured by adding the char to an apparatus (10) comprising a Dewar container (11) positioned on a magnetic stirrer (12) including a stir bar (13), a cap (14), a funnel (15), a vent (16), an opening (17), a thermocouple (18), an ice point compensator (21) and a strip char recorder (22).</p> |
