Superior CNT-supported bimetallic RuCu catalyst for the highly selective hydrogenolysis of glycerol to 1,2-propanediol

Abstract

Selective hydrogenation of glycerol to 1,2-propanediol (1,2-PD) is a promising route for sustainable production of platform chemicals. Herein, a bimetallic RuCu catalyst supported on multiwall carbon nanotubes (RuCu/MWCNT) is reported...

Transition Metal Catalysts for the Glycerol Reduction: Recent Advances

“…[218] The conversion was limited (18 %) but a remarkable 1,2-PD selectivity (93 %), at 473 K and 50 H 2 bar, was obtained. [218] Recently, Pd-Ru nanoparticles were supported on a series of metal oxides and zeolitic supports with the aim of understanding the correlation between the catalytic activity (conversion and 1,2-PD yield) and the support acidity. [219] It was observed that C 3 products (instead of C 2 and C 1 ) were favored at 20 bar H 2 and 438 K, using catalysts displaying a moderate density of strong acid sites (130 NH 3 μmol g À 1 on 230 NH 3 mmol g À 1 of total acidity) as in TiO 2 , giving 55 % GL conversion and 1,2-PD with 50 % selectivity.…”

“…The addition of copper to Ru nanoparticles, dispersed on multiwall carbon nanotubes by wet impregnation, significantly affected the reducibility of the metallic species, promoting the C−O cleavage [218] . The conversion was limited (18 %) but a remarkable 1,2‐PD selectivity (93 %), at 473 K and 50 H 2 bar, was obtained [218] .…”

On the effect of Alkaline Earth Metal Cations in the Hydrogenolysis of Glycerol over Pt/C – an Experimental and Theoretical Study

“…In particular PG finds wide application in cosmetics, as monomer, anti‐freeze and food additive. Apart from a few exceptions, mainly heterogeneous catalysts are used for the hydrogenolysis of GLY to PG [10–13] . The employed catalysts are typically based on the noble metals Ru/Re, [14] Pd [15–16] and Pt [17–18] or the non‐noble metals Ni [19–20] and Cu [21] .…”

“…Apart from a few exceptions, mainly heterogeneous catalysts are used for the hydrogenolysis of GLY to PG. [10][11][12][13] The employed catalysts are typically based on the noble metals Ru/Re, [14] Pd [15][16] and Pt [17][18] or the non-noble metals Ni [19][20] and Cu. [21] Next to the metal catalyst, a basic or acidic co-catalyst is added to enable the reaction.…”

Manganese-catalysed dehydrogenative oxidation of glycerol to lactic acid

“…3 Therefore, the development of new technologies to efficiently utilize “this waste” is highly desirable. Selective catalytic conversion of glycerol into more useful molecules, such as dihydroxyacetone (DHA), 4 lactic acids (LA), 5 propanediol (PD), 6 and alanine, 7 has attracted extensive attention from both academia and industry. Lactic acid, as one of the most attractive biomass-based platform molecules, is an important precursor for the synthesis of biodegradable polylactic acid (PLA).…”