fig6
From: Rational engineering of hydroxyapatites for sustainable chemicals, H2, biofuels and CO2 conversion
Figure 6. (A) CO2 conversion and (B) CH4 selectivity of the Ni/La-(x) catalysts in the CO2 methanation reaction. Reaction mixture conditions: 16% CO2 and 64% H2, balanced in He (WHSV = 30,000 mL/g.h). Reproduced from Ref.[135] with permission from Elsevier. (C) CO2-TPD (Left) and CH4 formation during TPSR experiments (Right) with pre-adsorbed CO2 on the reduced Ni/La-(x) catalysts. Reproduced from Ref.[135] with permission from Elsevier. (D) Reusability studies of catalysts with leaching content of K+ ions. Reproduced from Ref.[75] with permission from Elsevier.
