Reporting the Bismuth Promotion for Green Methanol Synthesis by CO₂ Hydrogenation over MgO-Supported Cu-Zn Catalysts

Table 2

Performance of Bi-promoted Cu-Zn/MgO catalysts in hydrogenating CO₂ to methanol with reported data.

Catalysts	CO2/H2 ratio	Pressure (bar)	Temperature (°C)	Meth. syn. rate (g/kg·h)	Reactor type	Reference
BiCu-Zn/MgO	1 : 3	30	190	28	Slurry	Current work
Cu/CNT	1 : 3	30	230	75	Slurry	[22]
Cu-Mg/CeO2	1 : 3	30	230	71	Slurry	[25]
Co-Cu/zeolite	1 : 3	30	190	27	Slurry	[23]
CoFe2O4	1 : 3	30	230	35	Slurry	[26]
AgCu/zeolite	1 : 3	30	230	72	Slurry	[27]
10Cu-ZnO/SiO2	1 : 3	30	220	26	Slurry	[28]
50Cu-ZnO/SiO2	1 : 3	30	220	55	Slurry	[28]
CZAZ-0Al	1 : 3	50	250	218	Slurry	[29]
CZAZ-20Al	1 : 3	50	250	168	Slurry	[29]
1Mn–Cu/MoO3	1 : 3	30	190	28	Fixed bed	[30]
Cu/ZnO/Al2O3/ZrO2	1 : 3	30	230	32	Fixed bed	[31]
Cu–ZnO/SiO2	1 : 3	30	230	26	Fixed bed	[32]
2ZCZ	1 : 3	30	250	68	Fixed bed	[13]
1.5ZCZ	1 : 3	30	250	90	Fixed bed	[13]
1Mn-Cu/MoO3	1 : 3	30	230	28	Slurry	[33]
Cu-Mg/zeolite	1 : 3	30	230	32	Fixed bed	[34]
Cu-ZnO/SiO2	1 : 3	30	230	26	Slurry	[28]
Cu/ZnO/Al2O3/ZrO2	1 : 3	30	220	32	Slurry	[29]
4PdSiO2	1 : 3	30	220	134	Slurry	[24]