High-Yield Production of Fatty Nitriles by One-Step Vapor-Phase Thermocatalysis of Triglycerides

Shirazi, Yaser; Tafazolian, Hosein; Viamajala, Sridhar; Varanasi, Sasidhar; Song, Zhaoning; Heben, Michael J.

doi:10.1021/acsomega.7b01502

Title: High-Yield Production of Fatty Nitriles by One-Step Vapor-Phase Thermocatalysis of Triglycerides

Journal Article · Fri Dec 15 00:00:00 EST 2017 · ACS Omega

DOI:https://doi.org/10.1021/acsomega.7b01502· OSTI ID:1413552

Shirazi, Yaser; Tafazolian, Hosein ^[1];

; Varanasi, Sasidhar ^[2];

;

Department of Chemistry, University of California Riverside, Riverside, California 92521, United States
Department of Chemical Engineering, Manhattan College, 3825 Corlear Avenue-Leo 422, Riverdale, New York 10463, United States

Fatty nitriles are widely used as intermediate molecules in the pharmaceutical and polymer industries. In addition, hydrogenation of fatty nitriles produces fatty amines that are common surfactants. In the conventional fatty nitrile process, triglycerides are first hydrolyzed and the resulting fatty acids are catalytically reacted with NH₃ in a liquid-phase reaction. In this study, we report a simpler one-step fatty nitrile production method that involves a direct vapor-phase reaction of triglycerides with NH₃ in the presence of heterogeneous solid acid catalysts. The reactions were performed in a tubular reactor maintained at 400 °C into which triglycerides were injected through an atomizer to allow rapid volatilization and reaction; NH₃ was fed as a gas. Several metal oxide catalysts were tested, and reactions in the presence of V₂O₅ resulted in near-theoretical fatty nitrile yields (84 wt % relative to the feed mass). In general, catalysts with higher acidity such as V₂O₅, Fe₂O₃, and ZnO showed higher fatty nitrile yields compared to low acidity catalysts such as ZrO, Al₂O₃, and CuO. Furthermore, energy balance calculations indicate that the one-step reaction described here would require significantly lower energy than the conventional process primarily because of the elimination of the energy-intense triglyceride hydrolysis.

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Research Organization:: Univ. of Toledo, OH (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office

Grant/Contract Number:: EE0005993

OSTI ID:: 1413552

Alternate ID(s):: OSTI ID: 1498774

Journal Information:: ACS Omega, Journal Name: ACS Omega Vol. 2 Journal Issue: 12; ISSN 2470-1343

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 19 works

Citation information provided by
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