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- Title
NI AND V REMOVAL FROM OIL AND MODEL COMPOUNDS WITHOUT HYDROGENATION: NATURAL CHABAZITE AS SOLID ACID.
- Authors
Rocha Aguilera, Gonzalo; Yang, Shaofeng; Junaid, Abu S. M.; Kuznicki, Steven M.; McCaffrey, William C.
- Abstract
Recently, natural chabazite was identified as a catalyst for a novel thermocatalytic oil upgrading process. To further develop this process, it is essential to understand the chemical reactions involved. In this study, up to 67.5% vanadium removal from oil sands bitumen is obtained without adding hydrogen. Using model compounds, vanadium removals up to 47.9% and nickel removals up to 3.4% were obtained after a 1 h reaction at 400 °C. Nickel removal up to 90.0% at equilibrium and room temperature was observed. Evidence of free-base porphyrin formation is presented. It was also found that chabazite can catalyze the dealkylation of octaethylporphyrins. The results presented here allow for a better understanding of the chemical properties of chabazite and open the possibility for the creation of pretreatment processes that can remove metals and modify the structure of petroleum-derived fractions without using hydrogen or rejecting substantial amounts of usable oil.
- Subjects
GREEN diesel fuels; ADDITION reactions; CHABAZITE
- Publication
Canadian Journal of Chemical Engineering, 2016, Vol 94, Issue 5, p1
- ISSN
0008-4034
- Publication type
Article
- DOI
10.1002/cjce.22463