Fig. 5: Catalytic mechanism analyses.

a Experimental EPR spectra (lines) and simulated spectra (open circles) for a mixture of PBN–OOC(CH3)3 and PBN–OC(CH3)3. b Intensity of the ʋ(OD) band during exposure of samples in (D2:H2 = 1:1) at a total D2/H2 flow rate of 30 ml min−1 at 80 °C and 1 atm.