Band Structure and the TitaniumLII, IIIX‐Ray Emission and Absorption Spectra from Pure Metal, Oxides, Nitride, Carbide, and Boride

1968 ◽  
Vol 39 (10) ◽  
pp. 4757-4776 ◽  
Author(s):  
David W. Fischer ◽  
William L. Baun
Keyword(s):  
Band Structure ◽  
Metal Oxides ◽  
Absorption Spectra ◽  
Pure Metal ◽  
Emission And Absorption Spectra

X-ray emission and absorption spectra of carbon nitride films prepared by laser ablation

1999 ◽  
Vol 28 (6) ◽  
pp. 509-514 ◽  
Author(s):  
H. Izumi ◽  
T. Kaneyoshi ◽  
T. Ishihara ◽  
H. Yoshioka ◽  
H. Matsui ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Absorption Spectra ◽  
Carbon Nitride ◽  
X Ray ◽  
Emission And Absorption Spectra

O 1s X-ray absorption spectra and band structure calculations of Ca1−xSrxRuO3

2004 ◽  
Vol 377 (1-2) ◽  
pp. 25-28 ◽  
Author(s):  
J. Manica ◽  
M. Abbate ◽  
J.E. Gayone ◽  
J.A. Guevara ◽  
S.L. Cuffini
Keyword(s):  
Band Structure ◽  
Absorption Spectra ◽  
X Ray ◽  
Band Structure Calculations ◽  
X Ray Absorption ◽  
Structure Calculations

scholarly journals Solar Metallurgy for Sustainable Zn and Mg Production in a Vacuum Reactor Using Concentrated Sunlight

2020 ◽  
Vol 12 (17) ◽  
pp. 6709 ◽  
Author(s):  
Srirat Chuayboon ◽  
Stéphane Abanades
Keyword(s):  
Carbon Black ◽  
Metal Oxides ◽  
Activated Charcoal ◽  
Carbothermal Reduction ◽  
Total Pressure ◽  
Operation Mode ◽  
Inert Atmosphere ◽  
Pure Metal ◽  
Reactor Outlet ◽  
Reaction Extent

Solar carbothermal reduction of volatile metal oxides represents a promising pyro-metallurgical pathway for the sustainable conversion of both metal oxides and sunlight into metal commodities and fuels in a single process. Nevertheless, there are several scientific challenges in discovering suitable metal oxides candidates for the ease of oxygen extraction from metal oxides to enhance the reaction extent and in designing reactors for the efficient absorption of incident solar radiation to minimize losses. In this study, ZnO and MgO were considered as volatile metal oxides candidates, and their reaction behaviors were studied and compared through gas species production rate, metal oxides conversion, and yield. A solar reactor prototype was developed to facilitate solar carbothermal reduction of ZnO and MgO with different reducing agents comprising activated charcoal and carbon black. The process was operated in a batch operation mode under vacuum and atmospheric pressures to demonstrate the flexibility and reliability of this system for co-production of metals (Zn/Mg) and CO. As a result, decreasing total pressure enhanced conversion of ZnO and MgO, leading to increased Zn and Mg. However, in the case of ZnO, CO yield decreased with decreasing total pressure at the expense of favored CO2 as a result of the decrease of residence time. In contrast, CO2 formation was negligible in the case of MgO, and CO yield thus increased with decreasing pressure. Using activated charcoal as the reducing agent exhibited better conversion of both ZnO and MgO than carbon black thanks to the higher available specific surface area for chemical reactions. MgO and ZnO conversion above 97% and 78%, respectively, and high-purity Mg and Zn content were accomplished, as evidenced by the recovered products at the reactor outlet and filter containing pure metal. In addition, Mg product exhibited strong oxidation reactivity with air, thus requiring inert atmosphere for the handling of Mg-rich powders to avoid direct exposure to air.

Fluorescence Emission and Absorption Spectra of Single Anabaena sp. Strain PCC7120 Cells¶

2007 ◽  
Vol 76 (3) ◽  
pp. 310-313 ◽  
Author(s):  
Lizhen Ying ◽  
Xu Huang ◽  
Bo Huang ◽  
Jia Xie ◽  
Jindong Zhao ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Fluorescence Emission ◽  
Emission And Absorption Spectra ◽  
Anabaena Sp
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