Catalytic Conversion of Ethanol into an Advanced Biofuel: Unprecedented Selectivity for n‐Butanol

Abstract

Der Widerspenstigen Zähmung: Ein Rutheniumdiphosphan‐Katalysator ermöglichte eine beispiellose Selektivität von über 94 % bei gutem Umsatz (20 %+) in der Ethanolveredelung zu 1‐Butanol (siehe Bild; P orange, Ru blau). Mechanistische Studien zeigen, dass die Acetaldehyd‐Aldolkondensation vermutlich am Metall stattfindet und ihre gezielte Kontrolle entscheidend für die hohe Selektivität ist.

Alternative thermochemical routes for aviation biofuels via alcohols synthesis: Process modeling, techno-economic assessment and comparison

“…Typical catalysts that enhance ethanol upgrading to butanol are alkali earth metal oxides and modified MgO [60]. Dowson et al [61] observed very good ethanol conversion and high n-butanol selectivity by using RuCl 2 catalyst.…”

“…The recovered methanol is recycled and resent to the MAR, whilst the higher alcohols are mixed with produced n-butanol. The ethanol self-condensation approach is based on the experimental findings from the study of Dowson et al [61]. For the set of the specifications of the dehydration process it is securely assumed that all the alcohols are totally converted into the corresponding alkenes [86,87].…”

Demonstration of CO2 Conversion to Synthetic Transport Fuel at Flue Gas Concentrations

“…Condensing two equivalents of smaller molecules such as ethanol, to produce butanol has previously been reported by Guerbet chemistry (Koda et al, 2009;Dowson et al, 2013;Ho et al, 2016). However, production of butanol from acetic acid has not previously been reported.…”

Lactic acid and hydrogen from glycerol via acceptorless dehydrogenation using homogeneous catalysts

“…condensation reactions to form the corresponding aldol intermediates. These act as acceptors for the borrowed hydrogen equivalents to afford the Guerbet alcohols [27,28] as final product. A very important reaction is the direct amination of alcohols.…”