Skip to main content
. 2009 Oct 28;106(45):18908–18913. doi: 10.1073/pnas.0910461106

Fig. 2.

Fig. 2.

rR spectra of O2-activated Cu-ZSM-5. (A) rR spectra of O2-activated Cu-ZSM-5 (Cu/Al = 0.54) collected at eight λexs from 351 nm to 568 nm with corresponding absorption spectrum Inset. (B) rR spectra (λex = 457.9 nm) of O2-activated Cu-ZSM-5 with varying Cu/Al ratios from 0.10 to 0.54 with corresponding absorption spectra Inset. (C) rR spectra (λex = 457.9 nm) of Cu-ZSM-5 (Cu/Al = 0.54) pretreated in O2 at 450 °C, recorded before and after heating in He at 450 °C and after reaction with CH4 at 200 °C.