Hydrodeoxygenation (HDO) of Biomass Derived Ketones Using Supported Transition Metals in a Continuous Reactor

Abstract

The hydrodeoxygenation (HDO) of 5-nonanonea model compound for more complex biomass-derived moleculesto n-nonane was investigated using a variety of heterogeneous multifunctional metal-impregnated aluminosilicate catalysts in a packed-bed continuous flow reactor system. Under optimized reaction conditions (200 °C, 1.38 MPa H 2 ), >99% conversion and >99% selectivity to n-nonane was achieved within a 30 min residence time over both Ni (7 wt %) and Co (9 wt %) supported on Perlkat 79-3, a high-surface area amorphous aluminosilicate. This work provides a further understanding of the effects of different metals, supports, and metal loading amounts on HDO of 5nonanone and demonstrates an efficient translation of HDO reactions of ketones from batch reactors to continuous flow systems.

Toward net-zero sustainable aviation fuel with wet waste–derived volatile fatty acids

“…However, at the base case assumed lifetime of 2 y, impacts of the catalyst cost were minimal. Alternative, low-cost (<$50/kg) HDO catalysts such as those based on Ni or Co have been demonstrated ( 64 ); however, we estimate that the impact of switching to one of these base-metal catalysts is on the order of one cent per gallon of VFA with a lifetime of 2 y. As noted above, future studies will evaluate VFA clean-up strategies to further reduce sulfur and other impurities as well as the use of nonprecious catalysts ( 65 – 67 ).…”

Production of jet fuel-range hydrocarbon biofuel by hydroxyalkylation–alkylation of furfural with 2-methylfuran and hydrodeoxygenation of C15 fuel precursor over a Ni/γ-Al2O3 catalyst: a reaction mechanism

“…The C 14 H 30 O 2 (VIII-X) isomers can also undergo the dehydrogenation reaction to form corresponding ketones. Yang et al reported the HDO of 5nonanone using aluminosilicate supported Ni and Co catalysts, and perceived 5-nonanol as the intermediate product 43 . The HDO reaction was proposed to follow via hydrogenation to 5-nonanol, followed by dehydration and hydrogenation reaction.…”

“…Yang et al reported the HDO of 5nonanone using aluminosilicate supported Ni and Co catalysts, and perceived 5-nonanol as the intermediate product. 43 The HDO reaction was proposed to follow via hydrogenation to 5nonanol, followed by dehydration and hydrogenation reaction. HDO of 2-hexanone and 3-hexanone was reported to follow via initial hydrogenation to the corresponding alcohols.…”

Hydro(deoxygenation) Reaction Network of Lignocellulosic Oxygenates

“…A range of HDO substrates, including cellulose, sugars, furan derivatives, biolipids, bio‐oil, and lignin‐derived oxygenates (Table ), offers a range of alkanes of varied branching and carbon numbers; however, the most important question is which of these HDO substrates has the maximum potential to replace current technology of replacing petroleum‐based fuel and lubricants. A simple model compound, such as 5‐nonanoene, was also used as an ideal substrate for screening many metal catalysts on ZSM‐5 and high‐surface‐area support Perlkat 79‐3 (aluminosilicate) …”

“…Therefore, the use of magnetic NPs may be used to enhance the local temperature to activate the catalyst surface under a cold environment. In addition to the interesting roles played by metal–support interfaces consisting of single‐site HDO functions and isolation of C=C and C=O bonds on the metal surface, depending on synergy . In this regard, formic acid, as one of most used biomass‐based hydrogen sources, can be explored for HDO‐based upgrading and oxygen removal processes, of which lignin valorization is used in addition to thermal energy production .…”