Development of highly stable catalyst for methanol synthesis from carbon dioxide

Hydrogenation of CO2 to methanol over In2O3 catalyst

“…Since the methanol formation reaction has to compete with the endothermic RGWS reaction at higher temperatures, the reported works on CO 2 hydrogenation to methanol over Cu/ZnO based and Pd based catalysts were normally performed at temperatures below 300 C. It is very difficult for those reported catalysts to maintain sufficiently high selectivity of methanol at temperatures higher than 300 C. The reported works in Table 1 were all conducted at temperatures below 270 C [18,[22][23][24][25][26][27][28][29][30][31][32][33][34]. As abovementioned, the DFT studies indicated that In 2 O 3 can inhibit the RGWS reaction [16,17].…”

“…As mentioned before, no pure oxide except In 2 O 3 shows high activity for methanol synthesis from CO 2 hydrogenation. For the copper based catalysts [22][23][24][25][26][27][28][29], co-catalyst, promoter(s) and support have to be applied in order to possess a good enough activity with high CO 2 conversion, good CH 3 OH selectivity and high CH 3 OH formation rate. To prepare these catalysts, wet impregnation and co-precipitation are common methods.…”

Cu/Zn/Al/Zr catalysts via phase-pure hydrotalcite-like compounds for methanol synthesis from carbon dioxide

“…Moreover, ZrO 2 is also a very promising catalyst promoter due to its high stability under reducing or reactive conditions [4,10]. The addition of suitable amount of ZrO 2 could enhance the copper dispersion and the surface basicity significantly, which in turn increased the catalytic activity and selectivity [9,[11][12][13]. By using a well controlled coprecipitation procedure, the Cu/Zn/Al/Zr catalyst should exhibit excellent performance for methanol synthesis from CO 2 hydrogenation.…”

“…Many authors have found that Cu/Zn/Al catalysts are also effective for methanol synthesis from CO 2 hydrogenation [5][6][7][8]. Al 2 O 3 has been pointed out to work as the promoter to increase the stability and the activity [9]. Moreover, ZrO 2 is also a very promising catalyst promoter due to its high stability under reducing or reactive conditions [4,10].…”

Effect of hierarchical meso–macroporous alumina-supported copper catalyst for methanol synthesis from CO2 hydrogenation

“…In addition, methanol can subsequently decompose to produce carbon monoxide and hydrogen at a temperature above 200°C (Eq. (4)) [34,35]. The occurrence of these different pathways strongly influences the product distribution.…”