Table 2. Comparison of conditions, HGR and E_a values of the as-synthesized Co@ZIF-5 catalyst for the hydrolysis of NaBH₄ among earlier reported cobalt-based catalysts.

Sr. no.	Catalyst	Conditions	HGR (mL min−1 g−1)	E a (kJ mol−1)	Ref.
1	Co/AC1	1 wt% NaOH, 5 wt% NaBH4, 250 mg catalyst, 30 °C	1280	—	47
2	Co–B/HPCM	2.25 wt% NaOH, 2 wt% NaBH4, 100 mg catalyst, 25 °C	3083.1	43.3	48
3	Co@C	2 wt% NaOH, 5 wt% NaBH4, 20 mg catalyst, 30 °C	1680	45	49
4	Co/TiO2	3.7 wt% NaOH, 3.7 wt% NaBH4, 50 mg catalyst, 25 °C	660	45.2	50
5	Co@X-TA-C	1 wt% NaOH, 1 wt% NaBH4, 30 mg catalyst, 25 °C	100.7	15.2	51
6	Co–O–P	8 wt% NaOH, 4 wt% NaBH4, 10 mg catalyst, 25 °C	4850	—	52
7	Co@C	NaOH (0.1 g), NaBH4 (0.1 g), 100 mg catalyst, 25 °C	5392	32.7	47
8	NiCo/ZIF-67/rGO	0 wt% NaOH, NaBH4 (85 mg), 50 mg catalyst, 303 K	5420	21.08	5
9	Co-ZIF-9	5 wt% NaOH, NaBH4 (0.5 wt%), 25 mg catalyst, 40 °C	3641	—	9
10	Cobalt-ZIF	0 wt% NaOH, 200 mg NaBH4, 15 mg catalyst (35 °C)	720.7	63.74	15
11	Co-ZIF-8	0.4 mol L−1 NaOH, 0.75 mmol NaBH4, 4 mmol% catalyst (30 °C)	14 023	62.9	16
12	Co@ZIF-5	0 wt% NaOH, 1 g NaBH 4 , 50 mg catalyst, RT (25 °C)	1350.5	14.95	This work