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. 2016 Feb 9;6:20527. doi: 10.1038/srep20527

Figure 1.

Figure 1

(a) Catalytic performances of CZG samples prepared with various chemical compositions and calcination temperatures (all calcined at 330 °C unless otherwise indicated; 330 oC was found to be the optimal temperature for the establishment of ZnGa2O4/ZnO phases over other phases according to XRD) under reaction conditions of 220 °C, 3.0 MPa, H2/DMO = 80, WHSV = 0.6 g g−1 h −1 and mcatal. = 100 mg; (b) The correlation between Zn0/Cu obtained from XPS result with DMO hydrogenation catalytic performances of CZG samples; (c) Comparison of catalytic performance and stabilities of Cu-containing catalysts; reaction conditions: P(H2) = 3.0 MPa, H2/DMO = 80 (v/v), Temperature = 240 °C, WLSHV = 0.6 g·g−1·h−1 and mcatal. = 100 mg (20 mg Cu/SiO2 was diluted by 80 mg quartz sand); subjected to heat treatment at 400 °C for 24 h under N2 before resuming the testing; (d) the correlation of Zn0/Cu ratio with stability and particle size change.