Abstract
With the world’s fossil fuels being finite in nature, an increasing interest focuses on the application of alternative renewable resources such as biomass. Biomass-derived platform chemicals with abundant functional groups have the potential to replace bulk chemicals for the production of value-added chemicals, fuels, and materials. The upgrading of these platform chemicals relies on the development of efficient catalytic systems. Hydrotalcite, with its wide compositional variety, tuneable anion-exchange capacity, and controlled acidity/basicity sites demonstrates great potential in the catalytic upgrading of biomass and the derived platform chemicals. The past decade has witnessed the emergence of research achievements on the development of efficient and robust hydrotalcite-derived metal catalysts and their applications in the upgrading of biomass or the derived platform chemicals. In this review, we aim to summarize the recent advances on the catalytic upgrading of biomass-derived platform chemicals (e.g., furfural, 5-hydroxymethylfurfural, levulinic acid, and glycerol) via hydrotalcite-derived metal catalysts. We also observed that the crucial role of using hydrotalcite-derived catalysts relies on their strong metal–support interactions. As a result, a section focusing on the discussion of the metal–support interactions of hydrotalcite-derived catalysts was provided.
Highlights
The current society has been extensively shaped by the widely available fossil fuels, polymer materials, and commodity chemicals
Given that fossil fuel reserves are finite in nature, increasing concern has focused on the exploration of alternative renewable resources such as biomass [1, 2]
The results indicated that Cu sites activated H2 and governed the catalytic reaction, and the difference in catalysis was probably caused by electronegativity (1.61 for Al3+, 1.66 for C r3+, and 1.83 for F e3+)
Summary
The current society has been extensively shaped by the widely available fossil fuels, polymer materials, and commodity chemicals. Given that fossil fuel reserves are finite in nature, increasing concern has focused on the exploration of alternative renewable resources such as biomass [1, 2]. The production of important bulk chemicals is desired, these strategies normally suffer from high energy input and low final product yield. The US Department of Energy summarized a list containing 12 potential biobased platform chemicals that can be produced from biomass biologically or chemically in high yield [8]. These building-block chemicals have the potential to be subsequently valorized into a variety of valuable biobased chemicals and materials. Hydrotalcite, which has previously revealed widespread application, shows tremendous potential
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