2018
DOI: 10.1155/2018/2564803
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Structural and Optical Properties of α-Quartz Cluster with Oxygen-Deficiency Centers

Abstract: The structural and optical properties of -quartz cluster with oxygen-deficiency centers (ODCs) defects have been investigated based on the density functional theory (DFT). For cluster models with ODC(I) defect, with the increasing of cluster size and shape, the equilibrium length of Si-Si bond decreases. The excitation peaks of cluster models with ODC(I) defect are from 6.87 eV to 7.39 eV, while the excitation peaks of cluster models with ODC(II) defect are from 5.20 eV to 5.47 eV. We also study the interconve… Show more

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“…Fast pyrolysis is performed in the absence of oxygen at a temperature range of 450 to 600 °C under atmospheric pressure. A short vapor residence time (< 2 s) along with high biomass heating rates produces high liquid output 130. Despite the advances made in past years, pyrolysis still faces certain challenges like enhancing the yield and quality of biofuels and improving the energy efficiency of the whole process.…”
Section: Direct Utilization Of Agro‐wastesmentioning
confidence: 99%
“…Fast pyrolysis is performed in the absence of oxygen at a temperature range of 450 to 600 °C under atmospheric pressure. A short vapor residence time (< 2 s) along with high biomass heating rates produces high liquid output 130. Despite the advances made in past years, pyrolysis still faces certain challenges like enhancing the yield and quality of biofuels and improving the energy efficiency of the whole process.…”
Section: Direct Utilization Of Agro‐wastesmentioning
confidence: 99%