Catalytic transfer hydrogenation of biomass-derived levulinic acid and its esters to γ-valerolactone over ZrO 2 catalyst supported on SBA-15 silica

Kuwahara, Yasutaka; Kaburagi, Wako; Osada, Yohsuke; Fujitani, Tadahiro; Yamashita, Hiromi

doi:10.1016/j.cattod.2016.05.016

Cited by 137 publications

(105 citation statements)

References 50 publications

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“…Recently, the catalytic transfer hydrogenation (CTH) of levulinic acid for the synthesis of gammavalerolactone (GVL) by Meerwein–Ponndorf–Verley (MPV) reduction using cheap metal oxides or hydroxides (especially Zr‐based materials) has received increasing attention . The same strategy was used for the production of 2,5‐bishydroxymethyl furan from 5‐hydroxymethyl furfural …”

Section: Introductionmentioning

confidence: 99%

Switching Selectivity in the Hydrogen Transfer Reduction of Furfural

et al. 2018

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Supported Cu catalysts and bare inorganic oxides have been tested in the reduction of furfural to furfuryl alcohol under hydrogen transfer reaction conditions by using butanol as a donor. Bare oxides like zirconia and alumina were found to be more active than the corresponding supported catalysts and in particular high surface Zirconia gave a quantitative transformation of the aldehyde into alcohol in 2,5 h at 140 °C according to a pure Meerwein‐Ponndorf‐Verley mechanism. Competitive dehydrogenation of the alcohol formed on the surface of Cu catalysts strongly reduces their activity although selectivity to alcohols on zirconia and alumina supported catalysts keeps very high. On the other hand catalysts with a well‐defined Lewis acid character such as highly dispersed Zirconia on Silica allowed to obtain up to 64% yield in 2‐butyl‐furfuryl‐ether under the same conditions.

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Section: Introductionmentioning

confidence: 99%

Switching Selectivity in the Hydrogen Transfer Reduction of Furfural

et al. 2018

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“…Kuwahara and co-workers investigated a series of ZrO2 catalysts supported on SBA-15 silica in the synthesis of GVL from LA and its esters via CTH using different alcohols as hydrogen donors [104]. The highest yield of GVL (95.0%) was obtained from methyl levulinate (ML) in the presence of 2-propanol (150 °C, 6 h, conv.…”

Section: Levulinic Acidmentioning

confidence: 99%

“…Zirconium phosphate catalysts (ZrPO-X, where X is the molar ratio of Zr to PO) were tested and a 98.1% of BL conversion and a 95.7% GVL yield were obtained using ZrPO-1.00 system. Kuwahara and co-workers investigated a series of ZrO 2 catalysts supported on SBA-15 silica in the synthesis of GVL from LA and its esters via CTH using different alcohols as hydrogen donors [104]. The highest yield of GVL (95.0%) was obtained from methyl levulinate (ML) in the presence of 2-propanol (150 • C, 6 h, conv.…”

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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“…200 • C or >6 h) to achieve moderate yields of GVL ( Table 1). The stability and catalytic performance can be improved via the incorporation of Zr species into solid supports like SBA-15 (Santa Barbara Amorphous-15); however, it generally involves complicated preparation procedures and relatively high production costs due to the use of expensive template agents [34]. Therefore, it is necessary to overcome these shortcomings by improving the stability of solid catalysts with a facile preparation method.…”

Section: Introductionmentioning

confidence: 99%

Acid–Base Bifunctional Hf Nanohybrids Enable High Selectivity in the Catalytic Conversion of Ethyl Levulinate to γ-Valerolactone

et al. 2018

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Abstract:The catalytic upgrading of bio-based platform molecules is a promising approach for biomass valorization. However, most solid catalysts are not thermally or chemically stable, and are difficult to prepare. In this study, a stable organic phosphonate-hafnium solid catalyst (PPOA-Hf) was synthesized, and acid-base bifunctional sites were found to play a cooperative role in the cascade transfer hydrogenation and cyclization of ethyl levulinate (EL) to γ-valerolactone (GVL). Under relatively mild reaction conditions of 160 • C for 6 h, EL was completely converted to GVL with a good yield of 85%. The apparent activation energy was calculated to be 53 kJ/mol, which was lower than other solid catalysts for the same reaction. In addition, the PPOA-Hf solid catalyst did not significantly decrease its activity after five recycles, and no evident leaching of Hf was observed, indicating its high stability and potential practical application.

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Catalytic transfer hydrogenation of biomass-derived levulinic acid and its esters to γ-valerolactone over ZrO 2 catalyst supported on SBA-15 silica

Cited by 137 publications

References 50 publications

Switching Selectivity in the Hydrogen Transfer Reduction of Furfural

Switching Selectivity in the Hydrogen Transfer Reduction of Furfural

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

Acid–Base Bifunctional Hf Nanohybrids Enable High Selectivity in the Catalytic Conversion of Ethyl Levulinate to γ-Valerolactone

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