Renewable acrylonitrile production.

Autor: Karp EM; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Eaton TR; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Sànchez I Nogué V; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Vorotnikov V; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Biddy MJ; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Tan ECD; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Brandner DG; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Cywar RM; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Liu R; Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA., Manker LP; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Michener WE; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Gilhespy M; Johnson Matthey Technology Centre, Billingham, Cleveland TS23 1LB, UK., Skoufa Z; Johnson Matthey Technology Centre, Billingham, Cleveland TS23 1LB, UK., Watson MJ; Johnson Matthey Technology Centre, Billingham, Cleveland TS23 1LB, UK., Fruchey OS; MATRIC, South Charleston, WV 25303, USA., Vardon DR; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA., Gill RT; Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA., Bratis AD; Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA., Beckham GT; National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO 80401, USA. gregg.beckham@nrel.gov.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2017 Dec 08; Vol. 358 (6368), pp. 1307-1310.
DOI: 10.1126/science.aan1059
Abstrakt: Acrylonitrile (ACN) is a petroleum-derived compound used in resins, polymers, acrylics, and carbon fiber. We present a process for renewable ACN production using 3-hydroxypropionic acid (3-HP), which can be produced microbially from sugars. The process achieves ACN molar yields exceeding 90% from ethyl 3-hydroxypropanoate (ethyl 3-HP) via dehydration and nitrilation with ammonia over an inexpensive titanium dioxide solid acid catalyst. We further describe an integrated process modeled at scale that is based on this chemistry and achieves near-quantitative ACN yields (98 ± 2%) from ethyl acrylate. This endothermic approach eliminates runaway reaction hazards and achieves higher yields than the standard propylene ammoxidation process. Avoidance of hydrogen cyanide as a by-product also improves process safety and mitigates product handling requirements.
(Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.)
Databáze: MEDLINE
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