A Novel One-Step Hydrothermal Preparation of Ru/SnxTi1−xO2 Diesel Oxidation Catalysts and its Low-Temperature Performance

Table 1 Texture properties of Sn_xTi_1−xO₂ supports and Ru/Sn_xTi_1−xO₂ catalysts

Samples	Crystalline size (nm)	Lattice parameter a = b, c (nm)	BET surface area (m² g⁻¹)	Vp/cm³ g⁻¹	d_p/A
SnO₂	6	a = 4.738, c = 3.187	126.4	0.14	4.0
Sn_0.67Ti_0.33O₂	4.5	a = 4.680, c = 3.095	156.5	0.17	3.9
Sn_0.5Ti_0.5O₂	5	a = 4.666, c = 3.073	126.2	0.18	5.0
Sn_0.33Ti_0.67O₂	5.4	a = 4.637, c = 3.027	108.1	0.20	6.5
TiO₂	4	a = 3.784, c = 2.959	257.4	0.21	3.5
Ru/SnO₂	23	a = 4.738, c = 3.187	77.34	0.14	6.1
Ru/Sn_0.67Ti_0.33O₂	7.6	a = 4.709, c = 3.141	83.3	0.15	5.3
Ru/Sn_0.5Ti_0.5O₂	9.5	a = 4.666, c = 3.073	75.3	0.15	5.6
Ru/Sn_0.33Ti_0.67O₂	11	a = 4.643, c = 3.044	68.6	0.16	6.5
Ru/TiO₂	5.5	a = 3.785, c = 2.961	177.10	0.23	5.3