CO2Catalyst 1500x1000.png (IMAGE) Stanford University Caption CO2 (black and red) and hydrogen molecules (blue) react with the help of a ruthenium-based catalyst. The coated catalyst produces longer chain hydrocarbons, like butane, propane and ethane. Credit Chih-Jung Chen/Mark Golden Usage Restrictions None License Original 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.