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IMAGE: Illustration of ammonia and nitrogen oxide molecules above a crystalline catalytic material. (inset) Nitrogen oxide conversion rates at 150 degrees Celsius for tungsten-substituted bulk vanadium oxide, bulk vanadium oxide, and. view more
Credit: Tokyo Metropolitan University
Tokyo, Japan - Researchers from Tokyo Metropolitan University have created a new tungsten-substituted vanadium oxide catalyst for breaking down harmful nitrogen oxides in industrial exhaust. Their new catalyst material works at lower temperatures and does not suffer major drops in performance when processing wet exhaust, resolving a major drawback in conventional vanadium oxide catalysts. They found that the unaggregated dispersal of atomic tungsten in the original crystal structure plays a key role in how it functions.