Tham khảo tài liệu 'phân tích eclectron trong hóa phân tích phần 9', kỹ thuật - công nghệ, hoá học - dầu khí phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Absorbance arbitrary un Figure 22. FT-ER. spectra of NO adsorbed at 25 C on 25 wt Fe SiOj containing 5 wt K that had been calcined for 16 hrs at 300 C and subsequently treated in H2 for 16 hrs at 300 C. The uppermost spectrum was obtained following exposure of the sample to 10 torr of NO for 15 min followed by evacuation. The second spectrum was obtained immediately after admission of 10 torr of Os at 25 C. The remaining spectra were then obtained at 15 min intervals in the continuing presence of gaseous Os- 76 Absorbance arbitrary units Wavenumber cm Figure 23. FT-IR spectra of NO adsorbed at 25 C on 25 wt Fe SiOj that had been calcined for 16 hrs at 300 C and subsequently treated in Hr for 8 hrs at 730 C. The uppermost spectrum was obtained following exposure of the sample to 10 torr of NO for 15 wn followed by evacuation. The second spectrum was obtained immediately after admission of 10 torr of O at 25 C. The remaining spectra were then obtained at 15 min intervals in the continuing presence of gaseous Oj. 77 rbit Figure 24. FT-IR spectra of NO adsorbed at 25 C on 25 wt Fe SiOj that had beexf éalỗned for 16 hrs at 300 C and subsequently treated in H2 for 16 hrs at 730 C. Thk uỊộermost spectrum was obtained following exposure of The sample to 10 torr of NO forx15 -min followed by evacuation. The second spectrum was obtained immediately after Admission of 10 torr of o 2 at 25 C. The remaining spectra were then obtained at 15 linn-intervals in the continuing presence of gaseous Oj. .
