Abstract

AbstractBiomass as a renewable and abundantly available carbon source is a promising alternative to fossil resources for the production of chemicals and fuels. The development of biobased chemistry, along with catalyst design, has received much research attention over recent years. However, dedicated reactor concepts for the conversion of biomass and its derivatives are a relatively new research field. Continuous flow microreactors are a promising tool for process intensification, especially for reactions in multiphase systems. In this work, the potential of microreactors for the catalytic conversion of biomass derivatives to value‐added chemicals and fuels is critically reviewed. Emphases are laid on the biphasic synthesis of furans from sugars, oxidation and hydrogenation of biomass derivatives. Microreactor processing has been shown capable of improving the efficiency of many biobased reactions, due to the transport intensification and a fine control over the process. Microreactors are expected to contribute in accelerating the technological development of biomass conversion and have a promising potential for industrial application in this area.

Highlights

  • IMPORTANT NOTE: You are advised to consult the publisher's version if you wish to cite from it

  • The use of biomass for producing chemicals and fuels should not compete with the food production, neither by the direct use of edible biomass nor by cultivation on lands that can be used for agricultural purposes (i. e. indirect land use)

  • His research is focused on the multiphase mass transfer characteristics in continuous flow microreactors and the use of microreactors for carrying out multiphase reactions, in particular the conversion of biomass derivatives to value-added chemicals and fuels

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Summary

Biomass to Chemicals and Fuels

The worldwide depletion of fossil resources has led to an increase in the demand of renewable and sustainable alternatives for the production of fuels, chemicals and energy. The use of biomass for producing chemicals and fuels should not compete with the food production, neither by the direct use of edible biomass nor by cultivation on lands that can be used for agricultural purposes G., saw and paper mill discards).[3] Lignocellulose is present as microfibrils in the cell walls of plants and trees. The most promising source of biomass for producing (bulk) chemicals and fuels is typically indigestible biological waste such as lignocellulose, an abundantly available byproduct from agricultural

Biomass Conversion Methods
Biobased Platform Chemicals
Catalyst Development for Biomass Conversion
Reactor Engineering Aspects for Biomass Conversion
Process Intensification for Biomass Conversion
Microreactors
Scope of this Review
Biomass Conversion in Microreactors
Synthesis of Furans by Sugar Dehydration
Homogeneously Catalyzed HMF Synthesis in a Single
Results and advantages of flow operation
Homogeneously Catalyzed Furan Synthesis in a Biphasic
Heterogeneously Catalyzed Furan Synthesis
Opportunities
Liquid Phase Oxidation of Biomass Derivatives
Oxidation of Glucose to Gluconic Acid
Oxidation of Lignin to Vanillin
Hydrogenation of Biomass Derivatives
Hydrogenation of Sugars to Sugar Alcohols
Hydrogenolysis of HMF to DMF
Hydrodeoxygenation of Pyrolysis Oil to Biofuels
Miscellaneous Catalytic Biomass Transformations
Esterification
Epoxidation
Hydrolysis
Etherification
Challenges and Future Perspectives
Solid Handling
Incorporation of Solid Catalysts
Upscaling of Multiphase Microreactors
The “Micro-Biorefinery”
Summarized Outlook
Findings
Conflict of Interest
Full Text
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