The CaO-Ni-CeO2 DFM possessed high performance of cyclic CaL-DRM: high CO2 uptake efficiency (10.3 mmolCO2/gCaO), high H2 and CO yields (754.4 mmolH2/gNi and 454.6 mmolCO/gNi), moderate...

Sep 17, 2020 · Here we report the discovery of pressure-stabilized divalent ozonide CaO 3 crystal that exhibits intriguing bonding and oxidation states with profound geological implications.

Dec 1, 2016 · Raman spectral measurements in the solids formed with X<0.28 indicated that crystalline Ca 3 SiO 5 was the predominant Raman active component present. The obtained glasses by the levitation technique were completely colorless and transparent amorphous spherical beads of about 0.5–1.0 mm in diameter.

Raman spectra could give only limited information about the properties of the Raman tensors because of the randomly oriented microcrystallites in the powder samples.

Measurements of the three independent components of the second-order Raman tensors of CaO, SrO, and BaO have been performed. A critical-point analysis based on the existing neutron data explains the CaO Raman spectra in detail. The similarities between the spectra of …

The spectra are interpreted on the basis of comparison to the well known Raman spectra of the garnet crystals with Ca3Ga2Ge3O12 and Ca3Sc2Ge3O12 compositions. It is shown that the spectra observed for the glasses of CaO-Ga2O3-GeO2 system are almost independent of the basic glass composition.

Dec 22, 2014 · In this study we present Raman spectra of pure lime phases and of a naturally grown calcite crystal, burnt limestone (quick lime, mainly CaO), aged slaked lime putty (mainly Ca(OH) 2), and carbonated lime putty (mainly CaCO 3). Based on the results, we shed light mainly onto these two questions: (1) Does CaO have a Raman spectrum?

Jun 1, 2003 · The Raman spectra of xB 2 O 3 ·(1−x)CaO glasses change significantly with the modification of calcium content in the boron network. For the lowest content (x=0.8) of CaO, the boroxol specific band is the main feature in the spectrum.

Jun 1, 1981 · Raman spectra of CaO SiO 2 and CaO SiO 2 CaF 2 glasses were measured to analyze three states of oxygen, i.e. bridging, non-bridging and free oxygen, in a similar way to the previous work on PbO SiO 2 glasses.

Raman spectral study shows that the transverse vibration of AlIV-O-AlIV and AlIV-O-BIII, stretching vibration of aluminate structural units and vibration of orthoborate and pyroborate structural groups. A broader distribution of Al-O bond lengths in PDF also supports the enhanced network connectivity.