Table 4: Effect of precipitation pH on the catalytic performance.

pHCO conversion (%)Selectivity (%)

6.3 84.0 43.0 19.6 8.4 1.5 5.3
7.3 79.6 27.9 19.0 9.0 2.7 7.2
8.3 86.3 22.5 32.1 10.8 4.1 6.8
9.3 81.2 20.0 24.1 10.0 4.0 5.9
10.3 80.0 19.0 22.9 10.9 3.2 6.1