scholarly journals Hydrogen transport property of polymer-derived cobalt cation-doped amorphous silica

2021 ◽  
Vol 8 (1) ◽  
pp. 90-99 ◽  
Author(s):  
Shotaro Tada ◽  
Shiori Ando ◽  
Toru Asaka ◽  
Yusuke Daiko ◽  
Sawao Honda ◽  
...  
Keyword(s):  
High Temperature ◽  
Transport Property ◽  
Amorphous Silica ◽  
Local Structure ◽  
Hydrogen Transport ◽  
Cobalt Cation ◽  
Co Doped

The effect of the local structure of Co-doped amorphous silica on the hydrogen transport property was studied with the aim to improve the high-temperature hydrogen-permselectivity of microporous amorphous silica-based membranes.

scholarly journals Effect of cobalt (nickel) oxide on the properties of zinc–titanium sorbents for high temperature desulphurization of model coal gas

2021 ◽  
Author(s):  
M. Chomiak ◽  
J. Trawczyński ◽  
M. Zawadzki
Keyword(s):  
High Temperature ◽  
Sorption Capacity ◽  
Catalytic Effect ◽  
Mixed Oxides ◽  
Mixed Metal Oxides ◽  
Coal Gas ◽  
Cobalt Nickel ◽  
Texture Structure ◽  
Cobalt Nickel Oxide ◽  
Co Doped

AbstractZn–Ti–Co(Ni) sorbents for H2S removal from model hot coal were prepared and characterized. Effects of cobalt (Co) and nickel (Ni) on the sorbents texture, structure, H2S sorption capacity and regeneration properties were determined. TiO2 formed mixed metal oxides with CoO and NiO in the fresh sorbents, while TiO2 and nanocrystalline sulfides of Zn, Co, Ni were found in sulphided ones. The oxidative regeneration of sulphided sorbents re-formed mixed oxides. Sorption capacity of studied materials increased along with an increase of the amount of added Co (Ni) and also with the number of work cycles. Co-doped Zn–Ti materials adsorbed up to 244% more sulfur than these of Zn–Ti, while Ni-doped materials adsorbed ca. twice more H2S than the corresponding Co-doped sorbents. The addition of Co (Ni) decreased the temperature of ZnS oxidation. The catalytic effect of the Co (Ni) oxides on the oxidation of ZnS was suggested.

Oxygen Precipitation in Conventional and Nitrogen Co-Doped Heavily Arsenic-Doped Czochralski Silicon Crystals: Oswald Ripening

2009 ◽  
Vol 156-158 ◽  
pp. 275-278
Author(s):  
Xiang Yang Ma ◽  
Yan Feng ◽  
Yu Heng Zeng ◽  
De Ren Yang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Czochralski Silicon ◽  
Silicon Crystals ◽  
Oxygen Precipitation ◽  
High Temperature Anneal ◽  
Oxygen Precipitates ◽  
Co Doped ◽  
Oswald Ripening

Oxygen precipitation (OP) behaviors in conventional and nitrogen co-doped heavily arsenic-doped Czocharalski silicon crystals subjected to low-high two-step anneals of 650 oC/8 h + 1000 oC/4-256 h have been comparatively investigated. Due to the nitrogen enhanced nucleation of OP during the low temperature anneal, much higher density of oxygen precipitates generated in the nitrogen co-doped specimens. With the extension of high temperature anneal, Oswald ripening of OP in the nitrogen co-doped specimens preceded that in the conventional ones. Moreover, due to the Oswald ripening effect, the oxygen precipitates in the conventional specimens became larger with a wider range of sizes. While, the sizes of oxygen precipitates in the nitrogen co-doped specimens distributed in a much narrower range with respect to the conventional ones.

scholarly journals High temperature annealing treatment on Co doped ZnO bulks

2009 ◽  
Vol 58 (5) ◽  
pp. 3274
Author(s):  
Peng Xian-De ◽  
Zhu Tao ◽  
Wang Fang-Wei
Keyword(s):  
High Temperature ◽  
Annealing Treatment ◽  
High Temperature Annealing ◽  
Doped Zno ◽  
Co Doped

A Eu and Tb co-doped MOF-5 compound for ratiometric high temperature sensing

2018 ◽  
Vol 44 (17) ◽  
pp. 21040-21046 ◽  
Author(s):  
Chao Xia ◽  
Caiyan Yu ◽  
Mengmeng Cao ◽  
Jinfeng Xia ◽  
Danyu Jiang ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Sensing ◽  
Co Doped

Large enhancement of piezoelectric properties and resistivity in Cu/Ta co‐doped Bi 4 Ti 3 O 12 high‐temperature piezoceramics

2019 ◽  
Vol 102 (12) ◽  
pp. 7366-7375 ◽  
Author(s):  
Xudong Li ◽  
Zhenning Chen ◽  
Linsheng Sheng ◽  
Juan Du ◽  
Wangfeng Bai ◽  
...  
Keyword(s):  
High Temperature ◽  
Piezoelectric Properties ◽  
Large Enhancement ◽  
Co Doped

Room-temperature and high-temperature magnetic permeability of Co-doped nanocrystalline alloys

Rare Metals ◽  
2018 ◽  
Vol 37 (5) ◽  
pp. 427-432 ◽  
Author(s):  
Bin Fu ◽  
Jie Han ◽  
Sheng-Qi Guo ◽  
Zhi Wang ◽  
Pan Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Magnetic Permeability ◽  
Room Temperature ◽  
Nanocrystalline Alloys ◽  
Co Doped

scholarly journals Ce and W co-doped CaBi2Nb2O9 with enhanced piezoelectric constant and electrical resistivity at high temperature

2020 ◽  
Vol 6 (3) ◽  
pp. 459-466 ◽  
Author(s):  
Zong-Yang Shen ◽  
Chen Qin ◽  
Wen-Qin Luo ◽  
Fusheng Song ◽  
Zhumei Wang ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
High Temperature ◽  
Piezoelectric Constant ◽  
Co Doped
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