fig4
Figure 4. (A) Pore size distribution curves of Ni-Fe catalysts obtained using DFT, NLDFT and HK models; (B)N2 adsorption/desorption isotherms showing a hysteresis loop that closes at P/P0 = 0.67, slightly higher than the typical H2 type. Ni-Fe: Nickel-iron; DFT: Density Functional Theory; NLDFT: Non-Local Density Functional Theory; HK: Horvath-Kawazoe.