Gounder Catalyst (IMAGE) Purdue University Caption This diagram depicts a new reaction mechanism that could be used to improve catalyst designs for pollution-control systems for diesel exhaust. Credit (Purdue University photo/Maureen Lifton) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.