Selective hydrogenation of 4-nitrostyrene over various catalysts^a.

Entry	Catalyst	Time (h)	Selecte (%)	Yielde (%)
1	—	1	0	0
2	γ-Al2O3	1	65	6
3	NiSx/γ-Al2O3	1	77	14
4	MoS2/γ-Al2O3	1	98	50
5	MoS2/γ-Al2O3	2	98	79
6b	O–MoS2	2	95	56
7c	MoS2/γ-Al2O3	2	90	<5
8	Fe–MoS2/γ-Al2O3	1	99	52
9	Fe–MoS2/γ-Al2O3	2	97	82
10	Co–MoS2/γ-Al2O3	1	98	65
11	Co–MoS2/γ-Al2O3	2	95	87
12	Ni–MoS2/γ-Al2O3	1	99	95
13	Ni–MoS2/γ-Al2O3	2	98	98
14d	NiSx/γ-Al2O3 + MoS2/γ-Al2O3	1	86	63
15d	NiSx/γ-Al2O3 + MoS2/γ-Al2O3	2	83	80

^aReaction conditions: 0.1 g catalyst, 1 mmol 4-nitrostyrene, 100 °C, 15 mL isopropyl alcohol, 1 MPa N₂, 3 equiv. N₂H₄·H₂O, calibration concentration of N₂H₄·H₂O is 79.2%.

^b18 mg catalyst (the molar content of Mo is the same as that of supported catalyst).

^cThere was no N₂H₄·H₂O added.

^d0.2 g catalyst.

^eDetected by GC-MS and GC using decalin as the internal standard.