Preparation and evaluation of sol-gel made nickel catalysts for carbon dioxide reforming of methane
| dc.contributor.advisor | Wang, Hui | en_US |
| dc.contributor.committeeMember | Pugsley, Todd | en_US |
| dc.contributor.committeeMember | Foley, Stephen R. | en_US |
| dc.contributor.committeeMember | Dalai, Ajay K. | en_US |
| dc.creator | Sun, Haijun | en_US |
| dc.date.accessioned | 2005-08-04T16:35:30Z | en_US |
| dc.date.accessioned | 2013-01-04T04:50:55Z | |
| dc.date.available | 2005-08-07T08:00:00Z | en_US |
| dc.date.available | 2013-01-04T04:50:55Z | |
| dc.date.created | 2005-07 | en_US |
| dc.date.issued | 2005-07-21 | en_US |
| dc.date.submitted | July 2005 | en_US |
| dc.description.abstract | Sol-gel (solution-gelation) method was used to prepare Ni-Ti and Ni-Ti-Al catalysts for reforming of methane with carbon dioxide. This method, after optimizing the parameters such as hydrolysis and acid/alkoxide ratio, is able to make a Ni-Ti catalyst with a surface area as high as 426m2/g when calcined at 473K; but calcination at higher temperature lead to dramatic decrease in surface area. XRD, XPS, TEM and SEM were used to understand this change. Using a packed bed reactor, the catalysts were evaluated with the reforming reaction. It was found that the activity of the Ni-Ti catalyst increases with the Ni loading in the range of 1-10wt%. The reduction temperature has strong effect on activity of the reduced catalyst. Up to 973K, the activity increases with the reduction temperature; but after 973K, the activity decreases and become 0 when the temperature is over 1023K. The Ni-Ti catalyst also deactivated as 15% after 4h of time on stream. The XRD analysis shows that Ti3O5 formed in the catalyst after higher-temperature reduction as well as after the reaction for a period of time. The formation of Ti3O5 may render the catalyst to loss its activity. However, further study is expected to understand the mechanism. TG/DTA analysis shows that both Ni-Ti and Ni-Ti-Al catalysts had carbon deposition; but the latter maintained higher activity in a longer period of time. | en_US |
| dc.identifier.uri | http://hdl.handle.net/10388/etd-08042005-163530 | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | sol-gel | en_US |
| dc.subject | syngas production | en_US |
| dc.subject | Methane reforming | en_US |
| dc.subject | Ni-Ti catalyst | en_US |
| dc.title | Preparation and evaluation of sol-gel made nickel catalysts for carbon dioxide reforming of methane | en_US |
| dc.type.genre | Thesis | en_US |
| dc.type.material | text | en_US |
| thesis.degree.department | Chemical Engineering | en_US |
| thesis.degree.discipline | Chemical Engineering | en_US |
| thesis.degree.grantor | University of Saskatchewan | en_US |
| thesis.degree.level | Masters | en_US |
| thesis.degree.name | Master of Science (M.Sc.) | en_US |