Structural properties of Li2CO3–BaCO3 system derived from IR and Raman spectroscopy

Effect of preparation conditions on structural and catalytic properties of lithium zirconate

“…An intense sharp Raman band at 1088 cm À 1 can be observed for LiZr-org-A, LiZr-org-B and LiZr-inorg-A samples, but a very small band was observed for LiZr-inorg-B sample. It is reported that the most characteristic band on the Raman spectrum of lithium carbonate is the one at 1088 cm À 1 along with small vibrations at 1458, 748, and 712 cm À 1 [31]. The Raman spectral results clearly coinciding with the XRD results that LiZr-org-A, LiZr-org-B and LiZr-inorg-A samples are composed of lithium carbonate.…”

Influence of the synthesis method on the preparation of barium titanate nanoparticles

“…7 shows the Raman spectra between 100-1200 cm -1 for the samples synthesized by (a) electrochemical and (b) Pechini method. The samples presented a peak in 1064 cm -1 (electrochemical method) and 1061 cm -1 (Pechini method) referred to the vibration of symmetric stretch of BaCO3 [37,38]. The presence of BaCO3 in the samples synthesized through electrochemical and Pechini routes was observed by XRD and SEM-FEG data, previously discussed.…”

Oxidative dehydrogenation of ethane over Co–BaCO3 catalysts using CO2 as oxidant: effects of Co promoter

“…Figure 5 gives LR spectra of BaCO 3 and 7 wt% Co-BaCO 3 catalyst treated under different conditions. BaCO 3 appeared Raman bands at 131, 148 and 690 cm )1 , which are respectively due to mBa-O (131 and 148 cm )1 ) [25][26][27] and the binding in-plane vibration of CO 3 2) (690 cm )1 ) [28][29]. LR spectra of Co 3 O 4 , Co 2 O 3 and CoO as references are shown in figure 6.…”