Table 1.

Energy barriers for the first C–H bond cleavage from methyl (path 1) and methylene group (path 2) of propane on pure and Pd-doped Cu(111) surfaces [27].

Surfaces	a	b	c	d	e
Path 1 (kcal/mol)	37.9	32.8	31.7	29.9	28.2
Path 2 (kcal/mol)	36.7	31.6	29.6	28.6	26.3