Surface chemistry of a viscose-based activated carbon cloth modified by treatment with ammonia and steam
✍ Scribed by J.P. Boudou
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 216 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0008-6223
No coin nor oath required. For personal study only.
✦ Synopsis
The influence of ammonia treatment at 800 8C on the catalytic activity of a viscose-based activated carbon cloth (ACC) was evaluated for the oxidative retention of H S or SO at room temperature. Change in the surface chemistry was observed 2 2 by X-ray spectroscopy of nitrogen (N1s) and by temperature programmed desorption (TPD). Dynamic adsorption of H S or 2 SO in moist air onto a packed bed of activated carbon cloth was monitored by measurement of the breakthrough curves at 2 room temperature. ACC modified by ammonia showed noteworthy enhanced SO and H S loading relative to the untreated 2 2 ACC. Improved SO retention rate could be replicated several times after regeneration by washing at room temperature, in 2 contrast to the case with H S. The likely reasons for the behavior of H S and SO on the ammonia-treated ACC are 2 2 2
discussed with reference to the recent literature.