Table 1. Fitted Exponents γ of the Fit of the Power Law to the Pressure Dependence of the Hydrogen Absorption Rate R^a.

	No PTFE				PTFE
	28 °C	60 °C	90 °C	120 °C	28 °C	60 °C	90 °C	120 °C
Pd	0.71	0.89	1.00	1.02	0.74	0.98	1.05	1.17
Pd0.7Au0.3	0.84	0.86	0.99	1.09	0.73	0.93	1.04	1.14
Pd0.6Au0.4	0.91	0.90	1.07	1.12	0.73	0.90	1.04	1.14
Pd0.5Au0.5	0.87	0.87	1.02	1.10	0.63	0.79	0.98	1.12
Ni	0.67	0.63	0.78	0.88	0.66	0.65	0.87	0.97
Pt	0.75	0.53	0.63	0.64	0.70	0.51	0.63	0.65
Ru		0.64		0.64

^aThe fits are displayed in Figures 4c, 6, and 11.