AgPd Nanoparticles Anchored on TiO2 Derived from a Titanium Metal–Organic Framework for Efficient Dehydrogenation of Formic Acid

Graphical Nanocatalysis : Highly uniformly dispersed AgPd alloy nanoparticles were anchored on a porous TiO 2 carrier, obtained by calcining precursor and template MIL-125(Ti), and used for FA dehydrogenation, achieving excellent catalytic activity. At 60 °C, the total TOF value of Ag 2 Pd 8 /TiO 2 -M-450-catalyzed FA dehydrogenation was 2579 h −1 . TiO 2 with a disc-like morphology was prepared by direct pyrolysis of a titanium metal–organic framework [MIL-125(Ti)] in air. Highly dispersed bimetallic AgPd nanoparticles were then anchored on TiO 2 and their catalytic performance in the dehydrogenation of formic acid was systematically investigated. The Ag/Pd ratio had a significant effect on the catalyst activity, with Ag 2 Pd 8 /TiO 2 exhibiting the highest total turnover frequency value of 2579 h −1 at 60 °C under an ambient atmosphere. This excellent performance was attributed to the low-crystallinity anatase phase structure and large specific surface area of the TiO 2 carrier, the alloying effect of the AgPd nanoparticles, and abundant electron transfer between the carrier and metal alloy nanoparticles.