. 2023 Jul 19;13(15):10137–10152. doi: 10.1021/acscatal.3c00755

Table 3. Acid Properties of Selected Catalysts.

catalyst	acid site loading^a (μmol NH₃/g)	Brønsted/Lewis ratio^b	total acid site density^c (nm^–2)
NS-625	228	0.01	1.83
0.1-SZ-625	371	1.04	1.68
0.25-SZ-625	420	0.73	1.99
0.5-SZ-425	470	0.31	3.21
0.5-SZ-525	428	0.93	3.10
0.5-SZ-625	510	1.16	3.79
1.0-SZ-625	132	0.41	1.81

Temperature-programmed desorption of NH₃.

FTIR spectra of adsorbed pyridine.

Determined from NH₃-TPD and S_BET, see eq 2.