Hydrogen-assisted dehydrochlorination (HaDHC) is an attractive route for the production of fluorine-containing olefins under relatively mild conditions, but highly efficient metal-based catalysts for this reaction remain underexplored. Here, the authors report a nano-MgF2-supported Pd-Ag catalyst with tunable Pd dispersion that is optimized by tuning of the Pd-Ag alloy degree in the fresh catalyst, followed by in situ restructuring, and demonstrate its performance in the HaDHC of 1,1,1,2-tetrafluoro-2-chloropropane (HCFC-244bb) to 2,3,3,3-tetrafluoropropene (HFO-1234yf), a hydrofluoroolefin refrigerant with reduced global warming impact.
- Chen Yang
- Wei Mao
- Erhard Kemnitz
