dc.contributor.author |
Heveling, J
|
en_US |
dc.contributor.author |
Nicolaides, CP
|
en_US |
dc.contributor.author |
Scurrell, MS
|
en_US |
dc.date.accessioned |
2007-03-26T06:41:12Z |
en_US |
dc.date.accessioned |
2007-06-07T10:09:23Z |
|
dc.date.available |
2007-03-26T06:41:12Z |
en_US |
dc.date.available |
2007-06-07T10:09:23Z |
|
dc.date.copyright |
|
en_US |
dc.date.issued |
1998-10-11 |
en_US |
dc.identifier.citation |
Heveling, J, Nicolaides, CP and Scurrell, MS. 1998. Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene. Applied Catalysis A-General, vol. 173(1), pp 1-9 |
en_US |
dc.identifier.issn |
0926-860x |
en_US |
dc.identifier.uri |
http://hdl.handle.net/10204/2020
|
en_US |
dc.identifier.uri |
http://hdl.handle.net/10204/2020
|
|
dc.description.abstract |
The oligomerisation of ethylene into products in the C-4-C-20 range over heterogeneous nickel catalysts in a fixed-bed reactor at low temperature and high pressure (LT-HP) is reported. The catalysts were obtained by Ni (II) exchange or impregnation of two differently prepared amorphous and mesoporous silica-alumina supports. A plot of catalytic activity versus temperature at 35 bar and MHSV=2 produces a volcano-type curve with a maximum around 120 degrees C. Experiments performed under the LT-HP reaction conditions, viz. 120 degrees C, 35 bar and MHSV=2, give an ethylene conversion level of 99% and a 97% selectivity to products with an even number of carbon atoms. The product spectrum (C-n distribution) was dependent on the type of catalyst used, with the percentage of the C10+ oligomers lying in the range 23-41% by mass. Of practical significance, these types of catalyst were found to be extremely stable in use showing no detectable drop in conversion after 108 days on stream under the LT-HP reaction conditions employed. |
en_US |
dc.format.extent |
201567 bytes |
en_US |
dc.format.mimetype |
application/pdf |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Elsevier Science BV |
en_US |
dc.rights |
Copyright: 1998 Elsevier Science B.V |
en_US |
dc.source |
|
en_US |
dc.subject |
Ethylene |
en_US |
dc.subject |
Oligomerisation |
en_US |
dc.subject |
Heterogeneous nickel catalysts |
en_US |
dc.title |
Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Heveling, J., Nicolaides, C., & Scurrell, M. (1998). Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene. http://hdl.handle.net/10204/2020 |
en_ZA |
dc.identifier.chicagocitation |
Heveling, J, CP Nicolaides, and MS Scurrell "Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene." (1998) http://hdl.handle.net/10204/2020 |
en_ZA |
dc.identifier.vancouvercitation |
Heveling J, Nicolaides C, Scurrell M. Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene. 1998; http://hdl.handle.net/10204/2020. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Heveling, J
AU - Nicolaides, CP
AU - Scurrell, MS
AB - The oligomerisation of ethylene into products in the C-4-C-20 range over heterogeneous nickel catalysts in a fixed-bed reactor at low temperature and high pressure (LT-HP) is reported. The catalysts were obtained by Ni (II) exchange or impregnation of two differently prepared amorphous and mesoporous silica-alumina supports. A plot of catalytic activity versus temperature at 35 bar and MHSV=2 produces a volcano-type curve with a maximum around 120 degrees C. Experiments performed under the LT-HP reaction conditions, viz. 120 degrees C, 35 bar and MHSV=2, give an ethylene conversion level of 99% and a 97% selectivity to products with an even number of carbon atoms. The product spectrum (C-n distribution) was dependent on the type of catalyst used, with the percentage of the C10+ oligomers lying in the range 23-41% by mass. Of practical significance, these types of catalyst were found to be extremely stable in use showing no detectable drop in conversion after 108 days on stream under the LT-HP reaction conditions employed.
DA - 1998-10-11
DB - ResearchSpace
DP - CSIR
KW - Ethylene
KW - Oligomerisation
KW - Heterogeneous nickel catalysts
LK - https://researchspace.csir.co.za
PY - 1998
SM - 0926-860x
T1 - Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene
TI - Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene
UR - http://hdl.handle.net/10204/2020
ER -
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en_ZA |