Acid characteristics of H-BEA samples.

Parameter	Acid sites	Si/Al
		15	32	72	124	407
Aluminum content, mmol g−1		1.06	0.5	0.23	0.13	0.04
Acid capacity, mmol g−1	w	1.64	0.83	0.96	0.27	0.00
	m	0.59	0.36	0.97	0.54	0.45
	s	0.47	0.84	0.14	0.67	0.45
	Total	2.70	2.03	2.07	1.48	0.90
Average NH3 adsorption heat, kJ mol−1	w	68.9	64.8	61.6	59.6	—
	m	99.1	86.2	94.3	89.7	86.9
	s	115.9	130.0	129.8	121.4	112.4
	Zero coverage	130	150	142	133	120