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