Loading patent…
AssigneeDsm IP Assets B.V.
InventorsRadhika VAN DER HELM, Thomas WELLAUER, Andreas WERNLI, Peter CLAES
Estimating the term…
The present invention relates to a method of reducing the deposit of metallic transition metal, particularly palladium, on a metal part in hydrogenation reactions using hydrogen and a heterogenous supported palladium catalyst. These metallic transition metal deposit, particularly palladium deposits, are particularly formed at areas which are exposed to high velocity and shear forces of the hydrogenation mixture comprising the transition metal catalyst, particularly palladium catalyst. They are significantly reduced or even avoided when the surface of the respective metal parts are coated by a plasma sprayed ceramic coating.
A method of reducing the deposit of metallic transition metal on a metal part of a hydrogenation reactor system which is used in the hydrogenation reaction in the presence of hydrogen and a heterogenous transition metal catalyst wherein said metal part is coated by a ceramic coating which is applied by plasma spraying.
A pump comprising an impeller the surface of which is made of a metal, particularly of a nickel alloy, which is coated by a ceramic coating prepared by plasma spraying.
A hydrogenation reactor system which comprises a metal part which is coated by a ceramic coating which is applied by plasma spraying.
Dependencies are inferred from the claim text.