Table 4. Comparative Catalytic Performance of Different Catalysts for Selective Reduction of NO by CO.

catalysts	temperature (°C)	XNO (%)	SN2 (%)	reaction condition	reference
CuOx/rGOc	350	23.8	100	1 vol % CO + 0.5 vol % NO in He	this work
Cu/rGOr	350	87.6	95.2	1 vol % CO + 0.5 vol % NO in He	this work
CuOx-PdOy/rGOc	350	61.1	95.1	1 vol % CO + 0.5 vol % NO in He	this work
Cu-Pd/rGOr	350	91.7	100	1 vol % CO + 0.5 vol % NO in He	this work
CuO	275	100	94	3.3 vol % CO + 0.7 vol % NO in He	[47]
5CuAIPO4	400	48	100	1.5 vol % CO + 0.2 vol % NO + 0.65 vol % O2 in He	[4]
5CuAIPO4 reduced	250	50	100	1.5 vol % CO + 0.2 vol % NO + 0.65 vol % O2 in He	[4]
Cu–Al hydrotalcite	360	100	100	1 vol % CO + 1 vol % NO in He	[48]
11.1CuO/γ-Al2O3	200	<60	0	10 vol % CO + 5 vol % NO in He	[5]
4.9CuO/CeO2	200	<98	100	10 vol % CO + 5 vol % NO in He	[5]
9.3CuO/CeO2	300	100	100	10 vol % CO + 5 vol % NO in He	[5]
Pd–Cu/Al2O3	200	<30		1 vol % CO + 0.45 vol % O2 + 0.1 vol % NO in N2	[49]
Pd–Cu/CeO–Al2O3	200	100		1 vol % CO + 0.45 vol % O2 + 0.1 vol % NO in N2	[49]