To Purify Exhaust from Gasoline Engines (U.S. Patent 2,970,886)
配方组成:
Hydrocarbons from exhaust fumes are absorbed by passing through a vessel containing pellets (1/4---3/8-inch) made of Citric Acid/20-30 Ammonium sulfate/10-17 Potassium chloride/4-12 Calcium Chloride/8-12 Phenyl Salicylate/7-14 Molybdenum Oxide/48-55 Sodium Nitrate/3-7