No abstract

An electrocatalytic palladium membrane reactor (ePMR) uses electricity and water to drive hydrogenation without H 2 gas.The device contains apalladium membrane to physically separate the formation of reactive hydrogen atoms from hydrogenation of the unsaturated organic substrate.This separation provides an opportunity to independently measure the hydrogenation reaction at asurface without any competing H 2 activation or proton reduction chemistry.W et ook advantage of this feature to test howdifferent metal catalysts coated on the palladium membrane affect the rates of hydrogenation of C = Oand C = Cbonds.Hydrogenation occurs at the secondary metal catalyst and not the underlying palladium membrane. These secondary catalysts also serve to accelerate the reaction and draw ah igher flux of hydrogen through the membrane. These results reveal insights into hydrogenation chemistry that would be challenging using thermal or electrochemical hydrogenation experiments.

An electrocatalytic palladium membrane reactor (ePMR) uses electricity and water to drive hydrogenation without H2 gas. The device contains a palladium membrane to physically separate the formation of reactive hydrogen atoms from hydrogenation of the unsaturated organic substrate. This separation provides an opportunity to independently measure the hydrogenation reaction at a surface without any competing H2 activation or proton reduction chemistry. We took advantage of this feature to test how different metal catalysts coated on the palladium membrane affect the rates of hydrogenation of C=O and C=C bonds. Hydrogenation occurs at the secondary metal catalyst and not the underlying palladium membrane. These secondary catalysts also serve to accelerate the reaction and draw a higher flux of hydrogen through the membrane. These results reveal insights into hydrogenation chemistry that would be challenging using thermal or electrochemical hydrogenation experiments.