“…A range of palladium sulfides are known including PdS, PdS 2 , Pd 4 S and non-stoichiometric materials such as Pd 2.2 S and Pd 2.5 S. PdS itself is a semi-conductor (E g = $2 eV) which also finds use in a wide range of catalytic processes including hydrodesulfurization [1], hydrogenation [2] and the selective synthesis of methanol from carbon monoxide and hydrogen [3]. While PdS can easily be prepared upon addition of hydrogen sulfide to tetrachloropalladate(II), in common with other metal sulfides it can be difficult to process or engineer.…”