Table 1. The Pore Structure Data of the Catalysts Measured by Nitrogen Adsorption.

catalyst	surface area (m2·g–1)	pore volume (cm3·g–1)	pore diameter (nm)
AC	221	0.088	4.03
Mn–Ce/AC	231	0.043	4.12
0.06K–Mn–Ce/AC	222	0.049	4.05
0.08K–Mn–Ce/AC	212	0.051	3.99
0.10K–Mn–Ce/AC	210	0.053	4.03
0.12K–Mn–Ce/AC	207	0.048	4.07