Abstract
In nickel-exchanged NaY for the oligomerization of ethene at 3500 kPa, catalyst activity and selectivity correlates with the degree of ion exchange, which was varied between 10 and 40%. The catalysts show two regions of high activity, one at a low temperature (l00-150°C) and one at a high temperature (>300°C). At low temperatures, the oligomerization proceeds by a selective growth reaction following Schulz-Flory statistics and, at an mass hourly space velocity of 2 h -1, 26% C 10+ product is obtainable in a straight run. At high temperatures, acid-catalysed site reactions contribute to the product spectrum. The Calculated Cetane Index (CCI) was taken as a first indication of the diesel quality obtained at a low temperature. Despite a low cut-off point, a CC1 of 46 was found for a partially hydrogenated sample. It is suggested that different active surface compounds are responsible for the catalyst activity at low and at high temperatures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
