Diesel Precursors Via Catalytic Hydrothermal Deoxygenation of Aqueous Canola Oil Emulsion. (15th March 2019)

• Record Type: Journal Article
• Authors: Ndubuisi, Richard U.; Sinichi, Sayeh; (Cathy) Chin, Ya‐Huei; Diosady, Levente L.
• Is Part Of: Journal of the American Oil Chemists' Society. Volume 96:Number 5(2019)
• Page Start: 535
• Page End: 543
• Publication Date: 2019-03-15
• Subjects: Decarboxylation -- Deoxygenation -- Hydrocarbon -- Catalyst -- Renewable -- Extraction; Oils and fats -- Periodicals; Soap -- Periodicals; Fats -- Periodicals; Food-Processing Industry -- Periodicals; Acides gras -- Périodiques; Aliments -- Industrie et commerce -- Périodiques; Huiles et graisses -- Périodiques; Savon -- Périodiques; Oliën; Chemie; Oils and fats; Soap; Periodicals; 547.77
• DOI: 10.1002/aocs.12208
• Languages: English
• ISSNs: 0003-021X

Abstract

Abstract: Aqueous extraction for protein isolation from oilseeds is a promising alternative to the conventional hexane‐based solvent extraction widely used in the industry. However, during aqueous extraction, a stable oil‐in‐water emulsion is produced that results in decreased oil yield. We demonstrated the conversion of this aqueous extract into renewable hydrocarbons on 20%w/w Ni/C at 315 °C and at an initial hydrogen headspace pressure of 1.95 MPa. Moderate yield (>50%) and selectivity (~70%) of hydrocarbons within the diesel range were obtained within 12 hours of reaction without additional external hydrogen input. It was also shown that a prolonged experimental run at 305 °C can result in near‐complete conversion of triacylglycerol oil into diesel‐range hydrocarbons (70%) and oxygenates (9%) with selectivity of ~80%. Although the study demonstrates for the first time the possibility of integrating aqueous extraction of protein with renewable diesel production in a hydrothermal medium, the limitations and challenges experienced during this initial study justify additional work that is presently underway.