A New COS-Suppressing Zeolite for Gas-Sweetening
- authored by
- Wolfgang Lutz, Josef Christian Buhl, Horst Thamm
- Abstract
In the past the COS formation on zeolites has been mainly explained by the catalytic activity of the zeolite cations and active centres of the zeolite framework. Especially the weakly coordinated sodium cations have been made responsible for the high degree of H2S conversion into COS observed on zeolite NaA in the presence of CO2. That is why highly exchanged CaNaA zeolites have been proposed for COS suppression. With long contact times, however, CaNaA zeolites exhibit also a high degree of COS formation. This paper shows that - independent on the contact time - extremely low rates of COS formation can be reached on CaNaA zeolites, if the accessibility of the β-cages for water molecules is blocked, e. g. by enclathrating salts into the β-cages. This result indicates that, besides the catalytic activity, the zeolite structure has a significant influence on the COS formation on zeolites, too.
- Organisation(s)
-
Institute of Mineralogy
- External Organisation(s)
-
WITEGA Laboratories Berlin-Adlershof GmbH
Grace GmbH & Co KG
- Type
- Contribution in non-scientific journal
- Journal
- Erdoel Erdgas Kohle
- Volume
- 115
- Pages
- 87-89
- No. of pages
- 3
- ISSN
- 0179-3187
- Publication date
- 02.1999
- Publication status
- Published
- ASJC Scopus subject areas
- Fuel Technology, Energy Engineering and Power Technology, Geotechnical Engineering and Engineering Geology
