| http://www.w3.org/ns/prov#value | - The compounds of the catalyst metals listed above that are disolved in the solution that is applied to the washcoat can be any water or alcohol soluble compound including but not limited to the oxides, hydroxides, inorganic salts, (e.g. nitrates, phosphates, halides, carbonates, silicates, aluminates, etc.) and organic salts, (e.g. amine salts, organic carboxylic acid salts, such as acetates, form
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