Conversion of biomass to γ-valerolactone by catalytic transfer hydrogenation of ethyl levulinate over metal hydroxides

Tang, Xing; Chen, Huawei; Hu, Lei; Hao, Weiwei; Sun, Yong; Zeng, Xianhai; Liu, Shijie

doi:10.1016/j.apcatb.2013.10.021

Cited by 285 publications

(193 citation statements)

References 45 publications

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“…The formation of FA from Fur [107][108][109], and the conversion of LEs to GVL involve reduction chemistry (CTH) [72,110], where the solvent can simultaneously act as H-donor reagent [111,112]. 2BuOH and 2-propanol (2PrOH) are considered favourable H-donor solvents, which may avoid side reactions [110,111]. Hence, a comparative study was carried out for 2BuOH and 2PrOH as reacting solvents for the one-pot conversion of Fur in the presence of (Sn) SSIE -beta1 (Table S1).…”

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confidence: 99%

One-pot conversion of furfural to useful bio-products in the presence of a Sn,Al-containing zeolite beta catalyst prepared via post-synthesis routes

Antunes

Lima

Neves

et al. 2015

Journal of Catalysis

125

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Aiming at the valorisation of furfural (Fur) via sustainable routes based on process intensification and heterogeneous catalysis, the one-pot conversion of this renewable platform chemical to useful bio-products, namely furfuryl alkyl ethers (FEs), levulinate esters (LEs), levulinic acid (LA), angelica lactones (AnLs) and -valerolactone (GVL), was investigated using a single heterogeneous catalyst, in 2-butanol, at 120 ºC. Various chemical 2 reactions are involved in this process, which requires catalysts with active sites for acid and reduction chemistry. For this purpose, it was explored for the first time the catalytic potentialities of modified versions of zeolite beta containing Al and Sn sites prepared from commercially available nanocrystaline zeolite beta via post-synthesis partial dealumination followed by solid-state ion-exchange. The post-synthesis conditions influenced considerably the catalytic performances of these types of materials. The best-performing catalyst was (Sn) SSIE -beta1 with Si/(Al+Sn)=19 (Sn/Al=27.6), which led to total yield of bio-products of 83% at 86% Fur conversion, and exhibited steady catalytic performance for six consecutive runs. A systematic catalytic study using the prepared catalysts with different bio-products as substrates, together with the molecular level and microstructural characterisation of the materials, helped understand the effects of different material properties on the specific reaction pathways in the overall system. These studies led to mechanistic insights into the reaction network of Fur to the bio-products in alcohol media, upon which a kinetic model was developed for the first time. The superior performance of (Sn) SSIE -beta1 in various steps was related to the dealumination degree, dispersion and amount of Sn-sites, and acid properties.

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mentioning

confidence: 99%

One-pot conversion of furfural to useful bio-products in the presence of a Sn,Al-containing zeolite beta catalyst prepared via post-synthesis routes

Antunes

Lima

Neves

et al. 2015

Journal of Catalysis

125

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“…It is generally believed that hydrogen transfer over metal oxides occurs according to the mechanism of the Meerwein-Ponndorf-Verley reduction. The hydrogen donor in the MPV reaction usually, a secondary alcohol can be recycled after hydrogenation over base metal catalysts such as nickel or copper [37,38]. In this context, there are no attempts made on transfer hydrogenation of furfural except the recent work by Hermans's group [31].…”

Section: Introductionmentioning

confidence: 98%

Single Pot Transfer Hydrogenation and Aldolization of Furfural Over Metal Oxide Catalysts

et al. 2016

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One pot catalytic transfer hydrogenation (CTH) of furfural to furfuryl alcohol (FAL) by using hydrogen producing alcohols and simultaneous aldolization of carbonyl compounds produced during CTH, with furfural was achieved over non-noble metal oxides with bifunctional sites. Basic sites of MgO responsible for abstraction of proton showed complete conversion of furfural to give FAL and C8 monomer in a ratio of 3:1, respectively, the later altered to 1:1 by incorporating Al into MgO. Catalyst stability was established by its four cycles study. GraphicalAbstract Keywords Furfural Á Furfuryl alcohol Á Transfer hydrogenation Á Aldol Á Metal oxides Abbreviations Al 2 O 3 Aluminum nitrate B Boron CT Conversion versus time CTH Catalytic transfer hydrogenation FA Furfural-acetone adduct F2A Furfural-acetone-furfural adduct FFR Furfural FAL Furfuryl alcohol 5-HMF 5-hydroxymethyl furfural 5-MF 5-methyl furfural IPA Iso-propyl alcohol MgO Magnesium oxide K Potassium K 2 CO 3 Potassium carbonate Electronic supplementary material The online version of this article (

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“…Tang et al synthesised low cost and eco-friendly metal hydroxides and examined their behaviour as catalysts in the production of GVL from biomass-derived EL via CTH in the presence of 2-propanol [101,102]. A 93.6% conversion of EL and 94.5% yield to GVL was achieved at 250 • C in 1 h with 2-propanol.…”

Section: Levulinic Acidmentioning

confidence: 99%

Catalytic Transfer Hydrogenolysis as an Effective Tool for the Reductive Upgrading of Cellulose, Hemicellulose, Lignin, and Their Derived Molecules

et al. 2018

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Lignocellulosic biomasses have a tremendous potential to cover the future demand of bio-based chemicals and materials, breaking down our historical dependence on petroleum resources. The development of green chemical technologies, together with the appropriate eco-politics, can make a decisive contribution to a cheap and effective conversion of lignocellulosic feedstocks into sustainable and renewable chemical building blocks. In this regard, the use of an indirect H-source for reducing the oxygen content in lignocellulosic biomasses and in their derived platform molecules is receiving increasing attention. In this contribution we highlight recent advances in the transfer hydrogenolysis of cellulose, hemicellulose, lignin, and of their derived model molecules promoted by heterogeneous catalysts for the sustainable production of biofuels and biochemicals.

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Conversion of biomass to γ-valerolactone by catalytic transfer hydrogenation of ethyl levulinate over metal hydroxides

Cited by 285 publications

References 45 publications

One-pot conversion of furfural to useful bio-products in the presence of a Sn,Al-containing zeolite beta catalyst prepared via post-synthesis routes

One-pot conversion of furfural to useful bio-products in the presence of a Sn,Al-containing zeolite beta catalyst prepared via post-synthesis routes

Single Pot Transfer Hydrogenation and Aldolization of Furfural Over Metal Oxide Catalysts

Catalytic Transfer Hydrogenolysis as an Effective Tool for the Reductive Upgrading of Cellulose, Hemicellulose, Lignin, and Their Derived Molecules

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