Catalytic conversion of canola oil over potassium-impregnated HZSM-5 catalysts: C{sub 2}-C{sub 4} olefin production and model reaction studies
- Univ. of Saskatchewan, Saskatoon (Canada). Catalysis and Chemical Reaction Engineering Lab.
The influence of catalyst acidity, reaction temperature, and canola oil space velocity on the conversion of canola oil was evaluated using a fixed-bed microreactor at atmospheric pressure at reaction temperatures and space velocities (WHSV) in the ranges 400--500 C and 1.8--3.6 h{sup {minus}1}, respectively, over potassium-impregnated HZSMs-5 catalysts. These catalysts were thoroughly characterized using XRD, N{sub 2} adsorption measurements, {sup 1}H NMR, TPD of NH{sub 3}, FT-IR, C{sub 2}-C{sub 4} olefins from canola oil were determined. The incorporation of potassium into HZSM-5 catalyst resulted in both the dilution and poisoning of Bronsted and total acid sites. These acidity changes only severely affected the acid catalyzed reactions, such as oligomerization and aromatization, and resulted in drastic modifications in product distribution. The maximum C{sub 2}C{sub 4} olefin yield of 25.8 wt % was obtained at 500 C and 1.8 h{sup {minus}1} space velocity with catalyst K1 of relatively low Bronsted and total acidity.
- OSTI ID:
- 413428
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 35, Issue 10; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
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