Details
| Original language | English |
|---|---|
| Pages (from-to) | 15-23 |
| Number of pages | 9 |
| Journal | Catalysis today |
| Volume | 82 |
| Issue number | 1-4 |
| Early online date | 25 Jun 2003 |
| Publication status | Published - 30 Jul 2003 |
Abstract
Dehydrogenation of propane is studied in a high temperature packed bed catalytic membrane reactor with a hydrogen-selective silica membrane. The silica membrane is prepared by a two-step sol-gel process. The removal of hydrogen in the membrane reactor results in higher propane conversion and higher propene yields in comparison to an equivalent fixed-bed reactor. Unfortunately, as a result of the H2 removal coking is favoured in the membrane reactor. Therefore, the higher propene yields are found only for the first 100-120min time on stream. However, the lower selectivity of the membrane reactor due to coking is compensated to some extend by a reduced hydrogenolysis. Two commercial dehydrogenation catalysts of different activity were tested in the membrane reactor: Cr2O3/Al2O3 and Pt-Sn/Al2O3. The two catalysts show a different activity, coking, and regeneration behaviour in the membrane-supported propane dehydrogenation.
Keywords
- Membrane reactor, Propane dehydrogenation, Silica membrane
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- General Chemistry
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In: Catalysis today, Vol. 82, No. 1-4, 30.07.2003, p. 15-23.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of different catalysts in the membrane-supported dehydrogenation of propane
AU - Schäfer, R.
AU - Noack, M.
AU - Kölsch, P.
AU - Stöhr, M.
AU - Caro, J.
PY - 2003/7/30
Y1 - 2003/7/30
N2 - Dehydrogenation of propane is studied in a high temperature packed bed catalytic membrane reactor with a hydrogen-selective silica membrane. The silica membrane is prepared by a two-step sol-gel process. The removal of hydrogen in the membrane reactor results in higher propane conversion and higher propene yields in comparison to an equivalent fixed-bed reactor. Unfortunately, as a result of the H2 removal coking is favoured in the membrane reactor. Therefore, the higher propene yields are found only for the first 100-120min time on stream. However, the lower selectivity of the membrane reactor due to coking is compensated to some extend by a reduced hydrogenolysis. Two commercial dehydrogenation catalysts of different activity were tested in the membrane reactor: Cr2O3/Al2O3 and Pt-Sn/Al2O3. The two catalysts show a different activity, coking, and regeneration behaviour in the membrane-supported propane dehydrogenation.
AB - Dehydrogenation of propane is studied in a high temperature packed bed catalytic membrane reactor with a hydrogen-selective silica membrane. The silica membrane is prepared by a two-step sol-gel process. The removal of hydrogen in the membrane reactor results in higher propane conversion and higher propene yields in comparison to an equivalent fixed-bed reactor. Unfortunately, as a result of the H2 removal coking is favoured in the membrane reactor. Therefore, the higher propene yields are found only for the first 100-120min time on stream. However, the lower selectivity of the membrane reactor due to coking is compensated to some extend by a reduced hydrogenolysis. Two commercial dehydrogenation catalysts of different activity were tested in the membrane reactor: Cr2O3/Al2O3 and Pt-Sn/Al2O3. The two catalysts show a different activity, coking, and regeneration behaviour in the membrane-supported propane dehydrogenation.
KW - Membrane reactor
KW - Propane dehydrogenation
KW - Silica membrane
UR - http://www.scopus.com/inward/record.url?scp=17444438409&partnerID=8YFLogxK
U2 - 10.1016/S0920-5861(03)00198-6
DO - 10.1016/S0920-5861(03)00198-6
M3 - Article
AN - SCOPUS:17444438409
VL - 82
SP - 15
EP - 23
JO - Catalysis today
JF - Catalysis today
SN - 0920-5861
IS - 1-4
ER -