Towards the separation of linear α-olefins from industrial process streams using transition metal stationary phases

The use of silver modified stationary phases for the separation of olefins from hydrocarbon mixtures was investigated. Gas solid chromatography (GSC) was found to be a quick and efficient technique for screening ion exchange resins and zeolites as potential support materials in olefin separation. Using GSC, the efficiency of Ag⁺ exchanged resin in retaining olefins relative to alkanes in a given mixture was found to be dependent on the porosity of the resin used. The silver form of the porous, macroreticular type Amberlyst A-15 resin strongly retained olefins in the GC column as compared to the microporous Amberlite IR(120) resin. Olefins were so strongly retained on the Ag⁺exchanged Amberlyst A-15 resin that they could only be eluted efficiently from the GC column at elevated temperatures. The Ag⁺ exchanged resin was however found to undergo degradation at elevated temperatures (> 140⁰C) and hence the resin packed columns could not be re-used.

Grantor dc:publisher.institution

Department of Physics

Year dc:date.issued

1994

Author dc:creator

• Phaho, David Sekgweng

Advisor dc:contributor.advisor

• Koch, Klaus R

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/18345

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/18345