초록 ▼

A process for making a honeycomb article having longitudinal channels extending from one face to a second face supporting a uniform coating of activated carbon on the channel walls, the process comprising the step of providing a solid heat-activated oxidant within the channels and heating the articl

A process for making a honeycomb article having longitudinal channels extending from one face to a second face supporting a uniform coating of activated carbon on the channel walls, the process comprising the step of providing a solid heat-activated oxidant within the channels and heating the article to release the oxidant and uniformly activate the carbon coating.

대표청구항 ▼

1. A method for making an activated-carbon-containing honeycomb structure comprising the steps of:forming a honeycomb substrate having an inlet face and an oppositely disposed outlet face, and comprising a plurality of channels separated from one another by channel walls, said channels extending lon

1. A method for making an activated-carbon-containing honeycomb structure comprising the steps of:forming a honeycomb substrate having an inlet face and an oppositely disposed outlet face, and comprising a plurality of channels separated from one another by channel walls, said channels extending longitudinally through said honeycomb substrate from said inlet face to said outlet face; covering said channel walls with a layer of carbon or carbon precursor; providing a solid heat-activated carbon-activating material within said channels, said carbon-activating material releasing an oxidizing substance upon heating; converting said carbon precursor to carbon; and heating said honeycomb substrate to a temperature at least sufficient to release said oxidizing substance, and reacting said oxidizing substance with said carbon to form activated carbon.