Table 7 Response surface quadratic model analysis of variance (ANOVA).
Source | Sum of Squares | Df | Mean Square | F-value | P-value | Remark |
|---|---|---|---|---|---|---|
Model | 1433.90 | 14 | 102.42 | 213.29 | < 0.0001 | Significant |
A-reaction temperature | 120.33 | 1 | 120.33 | 250.60 | < 0.0001 | |
B-reaction time | 159.14 | 1 | 159.14 | 331.41 | < 0.0001 | |
C-catalyst loading | 344.90 | 1 | 344.90 | 718.26 | < 0.0001 | |
D-methanol to oil molar ratio | 6.80 | 1 | 6.80 | 14.16 | < 0.0021 | |
AB | 169.00 | 1 | 169.00 | 351.95 | < 0.0001 | |
AC | 30.25 | 1 | 30.25 | 63.00 | < 0.0001 | |
AD | 20.25 | 1 | 20.25 | 42.17 | < 0.0001 | |
BC | 105.06 | 1 | 105.06 | 218.79 | < 0.0001 | |
BD | 207.36 | 1 | 207.36 | 431.85 | < 0.0001 | |
CD | 15.35 | 1 | 15.34 | 31.95 | < 0.0001 | |
A2 | 45.65 | 1 | 45.65 | 95.06 | < 0.0001 | |
B2 | 100.71 | 1 | 100.71 | 209.73 | < 0.0001 | |
C2 | 166.70 | 1 | 166.70 | 347.15 | < 0.0001 | |
D2 | 67.75 | 1 | 67.75 | 141.10 | < 0.0001 | |
Residual | 6.72 | 14 | 0.4802 | |||
Lack of Fit | 5.52 | 10 | 0.5523 | 1.84 | 0.2919 | Not significant |
