Table 1 Comparison results between experimental and predicted of H2BDC yield and recovery rate by Box-Behnken matrix
Independent variables | H2BDC yield (%) | Recovery ratio (%) | ||||||
|---|---|---|---|---|---|---|---|---|
NaOH (%) | Temperature (°c) | Time (h) | Experimental | Predicted | Residual | Experimental | Predicted | Residual |
10 | 200 | 12 | 97 ± 1 | 98 | -1 | 98 | 100 | -2 |
10 | 180 | 10 | 75 ± 1 | 74 | 1 | 72 | 71 | 1 |
5 | 200 | 10 | 91 ± 1 | 90 | 1 | 92 | 91 | 1 |
15 | 200 | 10 | 97 | 97 | -0 | 100 | 99 | 1 |
15 | 180 | 8 | 96 ± 1 | 96 | -1 | 100 | 100 | 0 |
5 | 180 | 8 | 52 ± 3 | 54 | -2 | 53 | 54 | -1 |
5 | 160 | 10 | 38 ± 3 | 38 | 0 | 33 | 34 | -1 |
10 | 160 | 8 | 67 ± 2.0 | 65 | 2 | 68 | 65 | 3 |
15 | 180 | 12 | 95 ± 1 | 94 | 1 | 100 | 99 | 1 |
10 | 180 | 10 | 72 ± 2 | 74 | -2 | 72 | 71 | 1 |
10 | 180 | 10 | 76 ± 1 | 74 | 2 | 74 | 71 | 3 |
10 | 200 | 8 | 91 ± 2 | 91 | 0 | 94 | 93 | 1 |
10 | 160 | 12 | 70 ± 2 | 71 | -1 | 72 | 73 | -1 |
15 | 160 | 10 | 96 ± 1 | 97 | -1 | 100 | 100 | 0 |
5 | 180 | 12 | 71 ± 2 | 70 | 1 | 74 | 72 | 2 |
10 | 180 | 10 | 74 ± 2 | 74 | 0 | 70 | 71 | -1 |
10 | 180 | 10 | 73 ± 2 | 74 | -1 | 69 | 71 | -2 |
5 | 200 | 12 | 99 | 100 | -1 | 100 | 100 | 0 |