(IMAGE) Yokohama National University Caption The Pd/zeolite catalyst with both acid sites in internal space and Pd nanoparticles on outer surface shows high activity for the direct alkylation of benzenes with alkanes. Credit The image may only be used with appropriate caption or credit. Usage Restrictions Yokohama National University 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.