Preparation of Pt/MgAl 2 O 4 Decalin Dehydrogenation Catalyst for Chemical Hydrogen Storage Application

Chemical hydrogen storage is an important area for hydrogen fuel cell applications while catalyst is the key to develop effective hydrogen production process for fuel cell applications. Platinum is a superior catalyst for decalin dehydrogenation, and support modification can improve the catalysis. Effects of different supports, preparation methods and Mg/Al molar ratio on the material properties and the catalytic performance of the Pt catalysts were thus systematically investigated. The results showed that the MgAl 2 O 4 support was more suitable for improving Pt dispersion and forming smaller Pt nanoparticles than the others. The Pt/MgAl 2 O 4 with Mg/Al molar ratio of 0.5 prepared by alcohol-heating method demonstrated superior performance, which is closely related to the Pt nanoparticle size and reaction state. Initial ratio of decalin to catalyst also played an important role in the activity and was achieved the optimal ratio in the liquid-film state. Graphical Abstract