Ag-Cu Bimetallic Nanoparticles Prepared by Microemulsion Method as Catalyst for Epoxidation of Styrene

Table 1

Chemical composition and textural properties of catalysts.

Ag/Cu (molar ratio)		ICP analysis			Pore size (nm)	Pore volume (cm^3/g)^b	BET surface area (m^2/g)
Nominal	EDS analysis^a	Ag wt%	Cu wt%	Ag/Cu molar ratio
1/0	1/0	1.52	—	1/0	16.08	1.05	261
3/1	3.17	1.34	0.31	2.55	17.17	1.37	319
1/1	1.58	1.13	0.76	0.88	18.39	1.35	293
1/3	0.42	0.65	1.22	0.31	20.51	1.48	288
0/1	0/1	—	1.89	0/1	20.68	1.67	323

^aDetermined before reduction by H₂.
^bTotal pore volume obtained from p/p° = 0.99.