Oxidant-Free Alcohol Dehydrogenation Using a Reusable Hydrotalcite-Supported Silver Nanoparticle Catalyst

Abstract

Ohne Zusätze: Silbernanopartikel auf Hydrotalcit‐Trägern wirken hoch effizient in der heterogenkatalysierten Dehydrierung von Alkoholen (siehe Bild), wobei auf Akzeptoren wie molekularen Sauerstoff, Wasserstoffperoxid oder ungesättigte organische Verbindungen verzichtet werden kann. Der Katalysator kann ohne Aktivitäts‐ und Selektivitätsverlust wiederverwendet werden.

Hydrotalcite‐Supported Gold Catalyst for the Oxidant‐Free Dehydrogenation of Benzyl Alcohol: Studies on Support and Gold Size Effects

“…The TOF value ( % 800 h À1 ) with the present catalyst for the oxidant-free dehydrogenation of benzyl alcohol is better than those measured with many other catalysts such as Ag/HT (590 h ). [32][33][34] We have performed more detailed studies for the 0.40 wt % Au/HT catalyst (with a mean Au size of 2.1 nm), which exhibits excellent performance in the oxidant-free de- …”

“…[29][30][31] Recently, supported Ag and Cu nanoparticles were also shown to catalyze the dehydrogenation of various alcohols. [32][33][34] In a recent short communication, [35] we demonstrated, for the first time, that supported Au nanoparticles could catalyze the oxidantand acceptor-free dehydrogenation of alcohols to aldehydes (or ketones) and H 2 . In particular, HT-supported Au nanoparticles exhibited high activity and selectivity for the oxidant-free dehydrogenation of a wide range of alcohols.…”

Synthesis of renewable diesel with the 2-methylfuran, butanal and acetone derived from lignocellulose

“…The 2-MF can be produced by the selective hydrogenation of furfural which is available on an industrial scale by the hydrolysis-dehydration of the hemicellulose part of agriculture wastes and forest residues (Xing et al, 2011). Butanal can be prepared by the partial oxidation (Zhang et al, 2011) or dehydrogenation (Mitsudome et al, 2008) of bio-butanol. The HAA of 2-MF with butanal can be catalyzed by mineral acids (such as H 2 SO 4 ), organic acid (such as para-toluenesulfonic acid), zeolites (ITQ-2, Beta and USY), MCM-41 and acidic resins (Amberlyst-15 and Dowex 50W).…”

Efficient Microwave Oxidation of Alcohols Using Low‐Loaded Supported Metallic Iron Nanoparticles

“…[10] With regards to catalysis, supported MNPs display a large surface to volume ratio as compared to their bulk metal analogues which makes them attractive candidates as catalysts for a wide range of reactions including hydroisomerisations, [7] hydrogenations, [11] CÀC coupling [5,6,12] and oxidations. [13,14] The oxidation of alcohols to carbonyl compounds is one of the key transformations in synthetic organic chemistry. [15] Alternative systems have been developed based on greener oxidants, including hydrogen peroxide and molecular oxygen, as well as heterogeneous catalysts such as Fe 2 O 3 nanoparticles, [13] Ag-NPs supported on hydrotalcites, [14] Au-NPs supported on metal oxides [16] and Pd-NPs supported on SBA-15.…”