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Regeneration of initial activity of a pitch-based ACF for NO-NH3 reaction at ambient temperature

被引：10
作者：
Mochida, I
Kishino, M
Kawano, S
Sakanishi, K
Kori, Y
Yasutake, A
Yoshikawa, M
机构：
[1] Kyushu Univ, Inst Adv Mat Study, Kasuga, Fukuoka 8168580, Japan
[2] Mitsubishi Heavy Ind Ltd, Tech Headquarters Nagasaki REs & Dev Ctr, Chem Res Lab, Nagasaki 8510301, Japan
[3] Osaka Gas Co Ltd, Ctr Res & Dev, Konahana Ku, Osaka 5540051, Japan
来源：
FUEL | 1998年 / 77卷 / 15期
关键词：
activated carbon fiber; NO; NH3;
D O I：
10.1016/S0016-2361(98)00095-7
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The reactivity of adsorbed NO (including NO2) and NH3 in the presence of 4.0% oxygen in He was examined over a pitch-based ACF calcined at 800 degrees C. Regeneration at 30 degrees C by 4% O-2 in He without NH3 was found to be optimum for the recovery of the initial activity with complete removal of NO within 3 h, with minimum leaks of adsorbed NO and NH3. A higher temperature of 40 degrees C for regeneration increased the liberation of adsorbed NO, and NH3 over ACF was rather slow at a lower temperature of 25 degrees C, slow regeneration being achieved. Oxygen appears necessary to regenerate the ACF through enhancing the reaction of adsorbed NO and NH3 for the initial activity, which was ascribed to the catalytic activity for NO-NH3 and adsorption of both NO and NH3. NH3 in the gas phase appears to inhibit the regeneration reaction of adsorbed species, by using the leaking amount during the regeneration. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1741 / 1746
页数：6
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