. 2021 Mar 29;9(14):4957–4966. doi: 10.1021/acssuschemeng.0c07881

Table 1. Atomic Percentage of MoO₂ (Mo⁴⁺), Mo₄O₁₁ (Mo⁵⁺), and MoO₃ (Mo⁶⁺) Species on the Spent Catalyst Surface, based on Mo 3d XPS.

catalyst	atomic percentage on the surface (%)
	Mo⁶⁺	Mo⁵⁺	Mo⁴⁺
MoO₃/Ti₃AlC₂ (spent)	24	41	35
MoO₃/Al₂O₃ (spent)	50	50	0
MoO₃/TiO₂ (spent)	80	20	0

Table 1. Atomic Percentage of MoO2 (Mo4+), Mo4O11 (Mo5+), and MoO3 (Mo6+) Species on the Spent Catalyst Surface, based on Mo 3d XPS.