Table 2. Apparent Activation Energy E_A and Prefactor R₀ Obtained by Fitting the Temperature Dependence of the Hydrogen Absorption Rate R to the Arrhenius Equation of eq 2^a.

	EA [kJ mol–1]		R0 [atoms nm–2 s–1]
	No PTFE	PTFE	No PTFE	PTFE
Pd	16	13	6.5	7.6
Pd0.7Au0.3	13	10	5.6	6.6
Pd0.6Au0.4	12	10	5.2	6.6
Pd0.5Au0.5	12	12	5.0	6.7
Ni	16	16	6.5	6.6
Pt	18	18	5.8	5.9

^aThe corresponding fits are displayed in Figures 7 and 12.