| 样品 | 总酸量(mmol∙g−1) | 弱酸酸量(mmol∙g−1) | 强酸酸量(mmol∙g−1) |
| 200℃~400℃ | 400℃~700℃ | ||
| Nb2O5 | 0.057 | 0.030 | 0.027 |
| HAC-Nb2O5 | 0.066 | 0.045 | 0.021 |
| HNO3-Nb2O5 | 0.221 | 0.078 | 0.143 |
| H3PO4-Nb2O5 | 0.430 | 0.105 | 0.325 |
| H2SO4-Nb2O5 | 0.901 | 0.083 | 0.818 |