METHODS FOR REMOVING IRON MATERIAL FROM A SUBSTRATE

摘要

Methods of removing iron from a catalytic converter having an accumulation of one or more iron compounds and regenerating a catalytic converter are provided. A catalytic converter having an accumulation of one or more iron compounds embedded or deposited thereon can be treated with a substantially aqueous alkaline solution in which the substantially aqueous alkaline solution includes an antioxidant.

主权项

1. A method of removing iron from a catalytic converter having an accumulation of one or more iron compounds, comprising:
(i) treating the catalytic converter with a substantially aqueous alkaline solution, said aqueous alkaline solution comprises an antioxidant; and (ii) removing at least a portion of the one or more iron compounds accumulated on the catalytic converter.