Recent Advances in the Catalytic Upgrading of Biomass Platform Chemicals Via Hydrotalcite-Derived Metal Catalysts

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.

Catalytic hydroconversion processes for upcycling plastic waste to fuels and chemicals

“…12). 98–100 Various catalysts including metal supported on solid acid catalysts and metal + solid acid mixture catalysts have been demonstrated to be effective for the HDO of biomass-derived molecules. Given the similarity of oxygen-containing aromatic plastics to lignin, the catalysts used for HDO of biomass derived molecules could also be applicable for HDO of plastic wastes.…”

“…12). [98][99][100] Various catalysts including metal supported on solid acid catalysts and metal + solid acid mixture catalysts have been…”

Environmentally Friendly Room Temperature Synthesis of 1-Tetralone over Layered Double Hydroxide-Hosted Sulphonato-Salen-Nickel(II) Complex

“…Hydrotalcite-like compounds (HTLs) are a class of anionic clays comprising hydroxides of common metals, such as zinc and aluminum, and can be prepared at room temperature and atmospheric pressure from water medium without using organic solvents. Hydrotalcite-based materials are green materials appealing to interest to many research groups owing to their use in various areas in recent years, such as catalyst and catalyst precursors, hosts for drugs controlled delivery, CO 2 capture, contaminant and heavy elements removal [20]- [28].…”

One-Pot Conversion of Cellulose into 2,5-Hexanedione in H2O-Tetrahydrofuran Co-Solvents

“…The social concerns on energy shortage and environment pollution drive our human society to develop efficient methods to produce fuel, energy, and materials from the renewable and sustainable resources. In such a context, the catalytic conversion of the abundant lignocellulose to high-quality transportation fuels and value-added chemicals has drawn tremendous attention. − During the past decades, great efforts have been devoted to the conversion of the biomass into simpler and more easily processed platform chemicals such as 5-hydroxymethylfurfural (HMF), 2,5-dimethylfuran (DMF), , levulinic acid, lactic acid, and 2,5-hexanedione (HXD), − because these platform chemicals could bridge biomass feedstocks and downstream high-end chemicals. Among these platform chemicals, the linear diketone HXD could be used as an intermediate for producing liquid fuels, fine chemicals, and polyesters from lignocellulosic biomass. ,− For example, HXD could be used as a key intermediate for producing polycycloalkanes, which are the primary components of some advanced aviation fuels (such as JP-10, RJ-4, JP-900, etc.…”