Potassium-Modified ZSM-5 Catalysts for Methyl Acrylate Formation from Methyl Lactate: The Impact of the Intrinsic Properties on Their Stability and Selectivity
Ekaterina Makshina, Judit Canadell, Jan van Krieken, Bert F. Sels
Abstract
Methyl lactate (ML) conversion to methyl acrylate is studied in the gaseous phase over ZSM-5 zeolite catalysts. High acrylate selectivity and catalyst service time were achieved using the K-ZSM-5 catalyst with low content of Brønsted acid sites (below 1 μmol g–1) and an overall K-to-Al atom ratio of unity. Feeding of ML in methanol containing 5 to 25 vol % of water improves catalyst stability. As such, up to 80% acrylate yield at complete ML conversion, along with minor deactivation after days-on-stream and fully recoverable catalysis, is presented.
Topics & Concepts
CatalysisMethyl acrylateChemistrySelectivityMethanolZeoliteYield (engineering)PotassiumZSM-5AcrylateEthyl lactateInorganic chemistryOrganic chemistryCopolymerMaterials sciencePolymerMetallurgyCatalysis for Biomass ConversionZeolite Catalysis and SynthesisCatalysis and Hydrodesulfurization Studies