Influence of NaBH4 Liquid Reduction Over LaCuZn Perovskite for CO2 Hydrogenation to Methanol

The Cu-based perovskite shows good methanol selectivity but low CO2 conversion in CO2 hydrogenation to methanol. After treated by NaBH4 liquid reduction, perovskite LaCuZn sample (l-LCZ) is reduced partially, particle size becomes smaller and BET surface area increases. This sample (l-LCZ) was tested for CO2 hydrogenation to methanol direct without H-2 reduction, and the catalytic activity of it is higher obviously than that over the catalyst LaCuZn which is reduced by H-2 at 623 K for 6 h. NaBH4 liquid reduction has good influence on the perovskite properties. [GRAPHICS] .