In situ synthesis of highly dispersed catalytic active sites to enhance the catalysis performance.

We report an HN-ZIF-67 catalyst with a large hollow structure and well-dispersed active sites by a facile diffusion-controlled strategy. Compared with the pristine ZIF-67 and semi-sealed ZIF-67, HN-ZIF-67 shows remarkable catalytic activity in the hydrogenation of nitro-compounds due to its highly dispersed active sites that are exposed to the substrate, and long cycle life. [ABSTRACT FROM AUTHOR]