hydrogen; platinum in ethanol Kinetics; byproducts: Pt, methane-d3; -20°C, stirring, H2-pressure 2.4 atm, 1 h or 40°C, 0.17 atm H2, 30 min; gas chromy., UV, mass spectrometry;

platinum in ethanol 0.17 atm H2, 40°C or 2.4 atm H2, -20°C;

hydrogen; platinum in n-heptane Kinetics; byproducts: Pt, methane; 40°C, stirring, H2-pressure 0.17 atm, 30 min or -20°C, stirring, 2.4 atm H2, 1 h; gas chromy., UV, mass spectrometry;