Table 1: The bubble point pressure, the corresponding bubble point pore diameter, and the median flow pore diameter for the ceramic samples before, during, and after the regeneration with oxalic acid at 35°C.

(h)BPP1 (bar)BPPD2 (μm)MFPS3 (μm)

0.08 mol/L
 01.331.550.63
 30.752.730.68
 60.742.790.70
 90.732.830.70
 120.742.780.69

0.33 mol/L
 01.341.540.65
 31.071.920.72
 61.171.760.74
 91.211.700.74
 121.311.570.74

0.60 mol/L
 01.511.370.69
 31.481.400.75
 61.451.420.80
 91.451.420.81
 121.441.430.81

1Bubble point pressure, 2bubble point pore diameter, 3mean flow pore diameter.