Chemical engineering translation

Figure 7 shows the H2-TPR Pro? M-oms-2 catalyst is used for LES. . The reduction reaction of all catalysts takes place at170–350 C. For catalysts with different peak positions, temperature ranges and peak types (Table 1), what does this mean? Doped metal materials. Between 200°C and 350°C, these peaks can be attributed to the reduction of manganese oxide and MnO manganese oxide during the formation of hydrogen consumption Mn2O3.

42。 It can be easily observed from Figure 7 that the cu-oms-2 catalyst shows the largest reduction in H2 consumption (12. 14 μ mol/g) and the lowest initial temperature170 C, which may be due to the reduction of cu species [24]. In addition, fe-oms-2 and cr-oms-2 catalysts show low reducibility, with the lowest hydrogen consumption (10.80 and 10.73 mol/g respectively) and higher initial reduction temperature (272℃ and 275℃ respectively). M-oms-2 catalyst reduces the reducibility of the subsequent sequence: Cu-OMS-2 >: >: > > Fe-Osmium -2 Ni-Osmium -2 Co-Osmium -2 Cr-Osmium -2. The high reducibility indicates that the oxygen mobility of the catalyst is high. Therefore, compared with other doped metals, copper can obviously improve the oxygen mobility of OMS-2 catalyst. There is a good correlation between TPR results and catalytic combustion activity and XPS results. Did the silver reform have a similar result? Oxidation reaction of ED OMS-2 catalyst in carbon monoxide

43。 In addition, Hernandez et al.

[44] It also shows that copper can improve the reducibility and catalytic activity of OMS-2. The limited promotion of Cu on the reduction of OMS-2 can be attributed to the formation of Cu-O- Mn bridge and the overflow of manganese oxide of Cu atom with hydrogen [24,

45。 Combined with XPS and H2-TPR results, it can be concluded that cu-oms-2 catalyst has the highest catalytic activity, which is attributed to richer defective oxide species, higher reducibility and oxygen mobility. It has been proposed that the catalyst for oxidation of OMS-2 with benzyl alcohol follows the Krevelen(MVK) mechanism of Mars van [3 1].