PVP-Stabilized Palladium Nanoparticles in Silica as Effective Catalysts for Hydrogenation Reactions

Table 2

Hydrogenation of alkenes at 4 atm of H₂^a.

Entry	Cat.	Alkene	𝑡/min^b	TOF^c
1	Pd(0)/SiO2/HF^d	1-hexene	12	158
2	Pd(0)/SiO2/HF^e	1-decene	10	74
3	Pd(0)/SiO2/HF^f	cyclohexene	49	60
4	Pd(0)/SiO2/HCl^g	1-hexene	31	425
5	Pd(0)/SiO2/HCl^h	1-decene	35	189
6	Pd/C (5%)	1-decene	6	8

aReaction conditions: temperature 75°C, constant hydrogen pressure (4 atm), solvent less. ^bTime for 100% conversion. ^cTOF based on total metal (mmol hydrogenated product formed per mmol of Pd per minute) for 20% conversion. ^dPd(0)/SiO₂/HF (50 mg, 2.0% of Pd(0)), 12 mmol of alkene. ^ePd(0)/SiO₂/HF (50 mg, 2.0% of Pd(0)), 7 mmol of alkene. ^fPd(0)/SiO₂/HF (50 mg, 2.0% of Pd(0)), 12 mmol of alkene. ^gPd(0)/SiO₂/HCl (50 mg, 0.3% of Pd(0)), 12 mmol of alkene. ^hPd(0)/SiO₂/HCl (50 mg, 0.3% of Pd(0)), 7 mmol of alkene. ^gPd/C (50 mg, 5.0% of Pd(0)), 7 mmol of alkene.