Details
| Original language | English |
|---|---|
| Pages (from-to) | 401-405 |
| Number of pages | 5 |
| Journal | CHEMCATCHEM |
| Volume | 1 |
| Issue number | 3 |
| Publication status | Published - 30 Oct 2009 |
Abstract
A multistep permeating hollow-fiber membrane reactor is introduced with successive parts of permeable and passivated surface segments. This geometry allows a controlled oxygen insertion into the reactor over an extended length in order to overcome the equilibrium conversion. At the same time, it provides a lower oxygen concentration, which yields higher ethene selectivity by selectively burning off in situ the hydrogen formed by conventional catalytic dehydrogenation. In the range of low and moderate ethane conversions, this membrane reactor, by using a standard commercial catalyst, can compete with the best catalysts used in the cofeed mode of the oxidative dehydrogenation of ethane (ODE). Reaction conditions with long-term stability could be established that have a comparable ethene yield to those in the industrial steam-cracking process, but at a temperature that is approximately 100 °C lower.
Keywords
- Alkanes, Dehydrogenation, Membranes, Oxidation, Perovskites
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Organic Chemistry
- Chemistry(all)
- Inorganic Chemistry
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In: CHEMCATCHEM, Vol. 1, No. 3, 30.10.2009, p. 401-405.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Olefin production by a multistep oxidative dehydrogenation in a perovskite hollow-fiber membrane reactor
AU - Czuprat, Oliver
AU - Werth, Steffen
AU - Schirrmeister, Steffen
AU - Schiestel, Thomas
AU - Caro, Jürgen
PY - 2009/10/30
Y1 - 2009/10/30
N2 - A multistep permeating hollow-fiber membrane reactor is introduced with successive parts of permeable and passivated surface segments. This geometry allows a controlled oxygen insertion into the reactor over an extended length in order to overcome the equilibrium conversion. At the same time, it provides a lower oxygen concentration, which yields higher ethene selectivity by selectively burning off in situ the hydrogen formed by conventional catalytic dehydrogenation. In the range of low and moderate ethane conversions, this membrane reactor, by using a standard commercial catalyst, can compete with the best catalysts used in the cofeed mode of the oxidative dehydrogenation of ethane (ODE). Reaction conditions with long-term stability could be established that have a comparable ethene yield to those in the industrial steam-cracking process, but at a temperature that is approximately 100 °C lower.
AB - A multistep permeating hollow-fiber membrane reactor is introduced with successive parts of permeable and passivated surface segments. This geometry allows a controlled oxygen insertion into the reactor over an extended length in order to overcome the equilibrium conversion. At the same time, it provides a lower oxygen concentration, which yields higher ethene selectivity by selectively burning off in situ the hydrogen formed by conventional catalytic dehydrogenation. In the range of low and moderate ethane conversions, this membrane reactor, by using a standard commercial catalyst, can compete with the best catalysts used in the cofeed mode of the oxidative dehydrogenation of ethane (ODE). Reaction conditions with long-term stability could be established that have a comparable ethene yield to those in the industrial steam-cracking process, but at a temperature that is approximately 100 °C lower.
KW - Alkanes
KW - Dehydrogenation
KW - Membranes
KW - Oxidation
KW - Perovskites
UR - http://www.scopus.com/inward/record.url?scp=77955339526&partnerID=8YFLogxK
U2 - 10.1002/cctc.200900176
DO - 10.1002/cctc.200900176
M3 - Article
AN - SCOPUS:77955339526
VL - 1
SP - 401
EP - 405
JO - CHEMCATCHEM
JF - CHEMCATCHEM
SN - 1867-3880
IS - 3
ER -