fig2
Figure 2. SEM images, N2 adsorption-desorption isotherms, and XPS patterns of catalysts Cu/13X (A) and Cu’/13X (B); (C)top: Cu/13X, bottom: Cu’/13X. SEM: Scanning electron microscopy; XPS: X-ray photoelectron spectroscopy.
Figure 2. SEM images, N2 adsorption-desorption isotherms, and XPS patterns of catalysts Cu/13X (A) and Cu’/13X (B); (C)top: Cu/13X, bottom: Cu’/13X. SEM: Scanning electron microscopy; XPS: X-ray photoelectron spectroscopy.
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