Kinetic Study on Reduction of NO of Low Concentration in Air with NH3at Room Temperature over Pitch-Based Active Carbon Fibers of Moderate Surface Area

Langmuir ◽  
1997 ◽  
Vol 13 (20) ◽  
pp. 5316-5321 ◽  
Author(s):  
Isao Mochida ◽  
Shizuo Kawano ◽  
Motohiro Hironaka ◽  
Yuji Kawabuchi ◽  
Yozo Korai ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Surface Area ◽  
Carbon Fibers ◽  
Active Carbon ◽  
Room Temperature ◽  
Reduction Of No ◽  
Low Concentration

Reduction of NO of Very Low Concentration in Air with NH3 at Room Temperature over Calcined Active Carbon Fibers

1995 ◽  
Vol 9 (4) ◽  
pp. 659-664 ◽  
Author(s):  
Isao Mochida ◽  
Shizuo Kawano ◽  
Motohiro Hironaka ◽  
Shunsuke Yatsunami ◽  
Yozo Korai ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Active Carbon ◽  
Room Temperature ◽  
Reduction Of No ◽  
Low Concentration

Reduction of NO at Very Low Concentration in Air with NH3at Room Temperature over a Series of Calcined Pitch Based Active Carbon Fibers

1995 ◽  
Vol 24 (5) ◽  
pp. 385-386 ◽  
Author(s):  
Isao Mochida ◽  
Shizuo Kawano ◽  
Motohiro Hironaka ◽  
Shunsuke Yatsunami ◽  
Yozo Korai ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Active Carbon ◽  
Room Temperature ◽  
Reduction Of No ◽  
Low Concentration

Reduction of Lower Concentration NO with Ammonia at Room Temperature over Pitch Based Active Carbon Fibers Calcined and Further Activated with Sulfuric Acid.

1996 ◽  
Vol 39 (2) ◽  
pp. 151-157 ◽  
Author(s):  
Isao MOCHIDA ◽  
Yuji KAWABUCHI ◽  
Motohiro HIRONAKA ◽  
Shizuo KAWANO ◽  
Yuji MATSUMURA ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Carbon Fibers ◽  
Active Carbon ◽  
Room Temperature

scholarly journals Photoconductivity of activated carbon fibers

1991 ◽  
Vol 6 (5) ◽  
pp. 1040-1047 ◽  
Author(s):  
K. Kuriyama ◽  
M.S. Dresselhaus
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Carbon Fibers ◽  
Low Temperatures ◽  
Room Temperature ◽  
High Surface ◽  
Localized States ◽  
Activated Carbon Fibers ◽  
Disordered Carbon ◽  
Increasing Temperature

The conductivity and photoconductivity are measured on a high-surface-area disordered carbon material, i.e., activated carbon fibers, to investigate their electronic properties. This material is a highly disordered carbon derived from a phenolic precursor, having a huge specific surface area of 1000–2000 m2/g. Our preliminary thermopower measurements show that the dominant carriers are holes at room temperature. The x-ray diffraction pattern reveals that the microstructure is amorphous-like with Lc ≃ 10 Å. The intrinsic electrical conductivity, on the order of 20 S/cm at room temperature, increases by a factor of several with increasing temperature in the range 30–290 K. In contrast, the photoconductivity in vacuum decreases with increasing temperature. The magnitude of the photoconductive signal was reduced by a factor of ten when the sample was exposed to air. The recombination kinetics changes from a monomolecular process at room temperature to a bimolecular process at low temperatures, indicative of an increase in the photocarrier density at low temperatures. The high density of localized states, which limits the motion of carriers and results in a slow recombination process, is responsible for the observed photoconductivity.

The Reactivity of Different Active Forms of Sodium Carbonate with Respect to Sulfur Dioxide

1992 ◽  
Vol 57 (11) ◽  
pp. 2302-2308
Author(s):  
Karel Mocek ◽  
Erich Lippert ◽  
Emerich Erdös
Keyword(s):  
Thermal Decomposition ◽  
Liquid Phase ◽  
Sulfur Dioxide ◽  
Specific Surface ◽  
Surface Area ◽  
Sodium Carbonate ◽  
Room Temperature ◽  
Active Form ◽  
The Other ◽  
Kinetics Of

The kinetics of the reaction of solid sodium carbonate with sulfur dioxide depends on the microstructure of the solid, which in turn is affected by the way and conditions of its preparation. The active form, analogous to that obtained by thermal decomposition of NaHCO3, emerges from the dehydration of Na2CO3 . 10 H2O in a vacuum or its weathering in air at room temperature. The two active forms are porous and have approximately the same specific surface area. Partial hydration of the active Na2CO3 in air at room temperature followed by thermal dehydration does not bring about a significant decrease in reactivity. On the other hand, if the preparation of anhydrous Na2CO3 involves, partly or completely, the liquid phase, the reactivity of the product is substantially lower.

Fe-Ti Bimetal Oxide Adsorbent for Removing Low Concentration H2S at Room Temperature

2021 ◽  
pp. 1-21
Author(s):  
Zhuangzhuang Guo ◽  
Zhihong Zhang ◽  
Xiaoyan Cao ◽  
Dongfang Feng
Keyword(s):  
Room Temperature ◽  
Low Concentration
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