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Selective process for conversion of levulinic acid to gammavalerolactone

A technology of levulinic acid and valerolactone is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as unsatisfactory, and achieve the effect of short reaction time

Active Publication Date: 2017-07-14
NESTE OIL OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the results showed high selectivity, levulinic acid conversion varied between 51-79%, which was not satisfactory

Method used

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  • Selective process for conversion of levulinic acid to gammavalerolactone
  • Selective process for conversion of levulinic acid to gammavalerolactone
  • Selective process for conversion of levulinic acid to gammavalerolactone

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Embodiment Construction

[0019] Levulinic acid production involves the concept of a biorefinery, a facility that integrates biomass conversion methods and equipment to produce fuels, power and chemicals from biomass.

[0020] The chemical composition of biomass strongly depends on its source. The most abundant carbohydrate in nature is cellulose. Cellulose is an unbranched, water-insoluble polysaccharide composed of several hundred to up to tens of thousands of glucose units. Levulinic acid can be produced from a hexose sugar, such as glucose, by an acid-catalyzed reaction that yields 1 mole of both levulinic acid and formic acid from 1 mole of hexose sugar. Levulinic acid can be used as such for different applications, or further reacted to generate other bioprecursors or bioproducts.

[0021] The reaction of levulinic acid to γ-valerolactone via 4-hydroxyvaleric acid was performed according to the following scheme.

[0022]

[0023] Although hydrogenation and cyclization are given as subsequen...

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Abstract

A process is disclosed for converting levulinic acid to gammavalerolactone with increased selectivity. The process is based on the recognition of the reaction intermediate, 4-hydroxyvaleric acid, and improved conversion thereof.

Description

technical field [0001] In general terms, the present invention relates to the conversion of biomass-based feedstocks into components that can be classified as renewable, such as renewable vehicle fuel components. In particular, but not exclusively, the invention relates to the conversion of levulinic acid to gamma-valerolactone in a two-step configuration. Background technique [0002] Levulinic acid has been identified as a suitable chemical feedstock that can be processed from biomass-derived hexoses. The conversion of levulinic acid to gamma-valerolactone (GVL) via hydrogenation and ring closure to lactone is a promising route for the manufacture of renewable components to be used as fuel components for various syntheses or used as is for a suitable purpose. [0003] The conversion of levulinic acid to gamma-valerolactone has been reported in US6617464B2. Different catalysts capable of carrying out the hydrogenation and ring closure required for this reaction were inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/33
CPCC07D301/02C07D307/33C07D307/32C07C51/367C07C59/01C07B37/10
Inventor S.托普平恩
Owner NESTE OIL OY
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