News Chemistry Building a cheaper catalyst Less costly than platinum, perovskite may do even better at cleaning diesel exhaust By Alexandra Witze March 25, 2010 at 1:41 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print Chemical engineers have found a cheaper and possibly better material than platinum for cleaning up the exhaust streams of diesel vehicles. IMPROVING ENGINES A perovskite catalyst could work better and more cheaply than traditional catalysts for cleaning exhaust from diesel engines.