Adding Value to Waste Minerals in a Circular Economy Framework: Ochre-Derived Layered Double Hydroxide Catalysts in Fatty Acid Ketonisation

Transforming waste materials into added-value products is critical for a sustainable and circular economy. Here, Mg/Fe layered double hydroxide (LDH) materials, with a Mg2+:Fe3+ ratio of 2, were successfully synthesized via the co-precipitation method from a dissolved acid mine drainage precipitate...

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Bibliographic Details
Published inMinerals (Basel) Vol. 9; no. 11; p. 681
Main Authors Perera-Solis, Diego D., Pimlott, Matilda, Fidment, Ella, Whiting, Andrew, Greenwell, Hugh Christopher
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2019
Subjects
Acid mine drainage
Catalysts
Circular economy
Decarboxylation
Economics
Fatty acids
Fourier transforms
Hydroxides
Iron
Ketones
ketonic decarboxylation
Laboratories
Landfills
Lauric acid
layered double hydroxide
Magnesium
Mine drainage
Minerals
ochre
Precipitation
Sustainability
Temperature
waste
Waste disposal sites
Waste materials
Water pollution
United Kingdom > UK
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Summary:Transforming waste materials into added-value products is critical for a sustainable and circular economy. Here, Mg/Fe layered double hydroxide (LDH) materials, with a Mg2+:Fe3+ ratio of 2, were successfully synthesized via the co-precipitation method from a dissolved acid mine drainage precipitate waste “ochre”, which is normally put to landfill. The prepared LDH materials were tested as a heterogeneous base catalyst to promote the production of the ketone, 12-tricosanone, from lauric acid, a component of plant oils, through a ketonic decarboxylation reaction, giving a circular economy route to catalysts for sustainable ketone production. The highest yield of the ketone observed was 80%.
ISSN:2075-163X
2075-163X
DOI:10.3390/min9110681