catalysts

Grain spacing D (nm)

Grain size

(Ce,La)CO₃F

5.014

280

Mn(0.2 mol/L)/(Ce,La)CO₃F

4.552

160

Mn(0.4 mol/L)/(Ce,La)CO₃F

4.486

168

Mn(0.6 mol/L)/(Ce,La)CO₃F

4.486

164

Mn(0.8 mol/L)/(Ce,La)CO₃F

4.389

154

Mn(1.0 mol/L)/(Ce,La)CO₃F

4.345

142