An Effective Pt-Cu/SiO₂ Catalyst for the Selective Hydrogenation of Cinnamaldehyde

Table 1

Physicochemical properties of Pt-Cu/SiO₂ catalysts.

Sample	(m^2/g)	Pt loading (wt%)	Cu loading (wt%)	XRD; (nm)	TEM; (nm)	D(Pt); (%)
SiO2	550	-	-	-	-
Pt/SiO2	364	1.21	-	21.54	-	5.24
Pt-Cu/SiO2	410	1.14	0.33	11.05	10.25	10.22

Derived from nitrogen adsorption-desorption isotherm. The contents of Pt and Cu are tested by ICP-OES. Average particle sizes calculated from XRD patterns of Pt based on Scherrer’s equation. Average particle sizes calculated from at least 50 individual crystallites in TEM images. Estimated from the mean particle size of Pt calculated from XRD patterns.