Direct photopatterning of metal oxide materials using photosensitive organometallic precursor films

2002 ◽  
Author(s):  
Sean J. Barstow ◽  
Augustin Jeyakumar ◽  
Clifford L. Henderson
Keyword(s):  
Metal Oxide ◽  
Oxide Materials ◽  
Organometallic Precursor

scholarly journals Thermochemical Energy Storage Performance Analysis of (Fe,Co,Mn)Ox Mixed Metal Oxides

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 362
Author(s):  
Yabibal Getahun Dessie ◽  
Qi Hong ◽  
Bachirou Guene Lougou ◽  
Juqi Zhang ◽  
Boshu Jiang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Redox Reaction ◽  
Gas Flow ◽  
Oxygen Exchange ◽  
Engineering Industry ◽  
Oxide Material ◽  
Oxide Materials ◽  
Uptake Ratio

Metal oxide materials are known for their ability to store thermochemical energy through reversible redox reactions. Metal oxides provide a new category of materials with exceptional performance in terms of thermochemical energy storage, reaction stability and oxygen-exchange and uptake capabilities. However, these characteristics are predicated on the right combination of the metal oxide candidates. In this study, metal oxide materials consisting of pure oxides, like cobalt(II) oxide, manganese(II) oxide, and iron(II, III) oxide (Fe3O4), and mixed oxides, such as (100 wt.% CoO, 100 wt.% Fe3O4, 100 wt.% CoO, 25 wt.% MnO + 75 wt.% CoO, 75 wt.% MnO + 25 wt.% CoO) and 50 wt.% MnO + 50.wt.% CoO), which was subjected to a two-cycle redox reaction, was proposed. The various mixtures of metal oxide catalysts proposed were investigated through the thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), energy dispersive X-ray (EDS), and scanning electron microscopy (SEM) analyses. The effect of argon (Ar) and oxygen (O2) at different gas flow rates (20, 30, and 50 mL/min) and temperature at thermal charging step and thermal discharging step (30–1400 °C) during the redox reaction were investigated. It was revealed that on the overall, 50 wt.% MnO + 50 wt.% CoO oxide had the most stable thermal stability and oxygen exchange to uptake ratio (0.83 and 0.99 at first and second redox reaction cycles, respectively). In addition, 30 mL/min Ar–20 mL/min O2 gas flow rate further increased the proposed (Fe,Co,Mn)Ox mixed oxide catalyst’s cyclic stability and oxygen uptake ratio. SEM revealed that the proposed (Fe,Co,Mn)Ox material had a smooth surface and consisted of polygonal-shaped structures. Thus, the proposed metallic oxide material can effectively be utilized for high-density thermochemical energy storage purposes. This study is of relevance to the power engineering industry and academia.

Characterization of microwave effects on metal-oxide materials: Zinc oxide and titanium dioxide

2009 ◽  
Vol 91 (1-2) ◽  
pp. 362-367 ◽  
Author(s):  
Satoshi Horikoshi ◽  
Akihiro Matsubara ◽  
Sadatsugu Takayama ◽  
Motoyasu Sato ◽  
Futoshi Sakai ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Titanium Dioxide ◽  
Metal Oxide ◽  
Oxide Materials ◽  
Microwave Effects

scholarly journals On the origin of sensing properties of the nanodispersed layers of semiconducting metal oxide materials

2010 ◽  
Vol 5 ◽  
pp. 9-12 ◽  
Author(s):  
N.P. Zaretskiy ◽  
L.I. Menshikov ◽  
A.A. Vasiliev ◽  
P.L. Menshikov
Keyword(s):  
Metal Oxide ◽  
Oxide Materials ◽  
Sensing Properties ◽  
Semiconducting Metal Oxide

Protein Adsorption onto Metal Oxide Materials in White Wine Model Systems

2002 ◽  
Vol 67 (6) ◽  
pp. 2118-2121 ◽  
Author(s):  
V. Pachova ◽  
M. Ferrando ◽  
C. Guell ◽  
F. Loapez
Keyword(s):  
Metal Oxide ◽  
Protein Adsorption ◽  
White Wine ◽  
Model Systems ◽  
Oxide Materials

Simultaneous Hot Desulfurization and Improved Filtration in Coal Utilization Processes

1996 ◽  
Author(s):  
James F. Zievers ◽  
Parul Patel ◽  
Paul Eggerstedt ◽  
Elizabeth C. Zievers
Keyword(s):  
Particle Size ◽  
High Temperature ◽  
Metal Oxide ◽  
Sulfur Removal ◽  
Cost Effective ◽  
Ceramic Filter ◽  
Oxide Materials ◽  
Effective Manner

This paper suggests the use of spent metal oxide materials for use in sulfur removal as an alternative to regenerable pelletized metal oxide sorbents. When classified to a desired particle size and injected into a high temperature coal utilization process, such a “once-through” sorbent can effectively remove sulfur and simultaneously increase the permeability of dust collected at a downstream ceramic filter station, in a highly cost effective manner.

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