fig1
Figure 1. (A) XRD patterns; (B) SEM images; (C) UV-vis spectra; and (D) N2 adsorption-desorption isotherms at 77 K of (a) Ti-MWW, (b) Re-Ti-MWW, (c) TS-1, and (d) Ti-MOR. XRD: X-ray powder diffractometer; SEM: scanning electron microscope; UV-vis: ultraviolet-visible.
