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International Journal of Chemical Engineering
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International Journal of Chemical Engineering
/
2015
/
Article
/
Tab 2
/
Research Article
Synthesis of CuNi/C and CuNi/
-Al
2
O
3
Catalysts for the Reverse Water Gas Shift Reaction
Table 2
Cu-Ni surface ratios obtained from XPS measurements.
ā
Theoretical bulk Cu/Ni ratio from nominal composition
Actual Surface Cu/Ni ratio from XPS
Percentage Increase
Cu
20
Ni
80
0.25
1.2
380%
Cu
50
Ni
50
1
2
100%
Cu
80
Ni
20
4
4.2
5%