Table 1. Elemental analysis of NaY, [APMIM]Br@NaY-X and [BMIM]Br@NaY.

Samples	C (wt %)	H (wt %)	N (wt %)	IL loading (wt %)	IL/supercage
NaY	0.02	2.95	0.25	--	--
[APMIM]Br@NaY-0.5	2.55	2.67	1.45	6.64	0.49
[APMIM]Br@NaY-1	4.35	2.80	2.34	11.36	0.89
[APMIM]Br@NaY-2	6.77	2.74	3.55	17.68	1.49
[APMIM]Br@NaY-4	7.43	2.87	3.73	19.42	1.67
[APMIM]Br@NaY-8	7.62	2.70	4.02	19.92	1.73
[APMIM]Br@NaY-10	8.06	2.69	4.13	21.06a	1.85
[BMIM]Br@NaY	8.12	1.91	3.11	18.50a	1.58

^aIn accordance with the results of TGA.