Welcome to LookChem.com Sign In | Join Free

Science Details

Home > Chemical Encyclopedia > Science List > Details
  • ArticleOne-step aldol condensation reaction of Dimethoxymethane (cas 109-87-5) and methyl acetate over supported Cs/ZSM-35 zeolite catalysts

  • Add time:08/28/2019    Source:sciencedirect.com

    This study was performed for the development of a green and promising approach for the synthesis of methyl acrylate and acrylic acid by a one-step aldol condensation reaction of Dimethoxymethane (cas 109-87-5) and methyl acetate over cesium oxide-supported on ZSM-35 zeolite catalysts; the effect of base sites as well as acid sites on the aldol condensation reaction was studied in detail. It was found that base sites were harmful for aldol condensation due to their failure in catalyzing the decomposition of dimethoxymethane precursor into formaldehyde, whereas the acid site was indispensable for the reaction to proceed. This reaction cannot take place without an acid site. Although acid sites in H-form of the zeolite (HZSM-35) are indispensable for the aldol condensation reaction, not all of them tend to favor this reaction. A strong acid catalyzes methanol-to-olefin-like reactions resulting in hydrocarbon byproducts, which are finally transferred to hard coke. Medium strong acids and weak acids are great candidates for the target aldol condensation reaction with high activity and selectivity. A γ-Al2O3 sample with abundant weak-strength Lewis acid sites, together with a few medium-strong-strength acid sites, performs well with a high activity and considerable stability during the synthesis of methyl acrylate and acrylic acid.

    We also recommend Trading Suppliers and Manufacturers of Dimethoxymethane (cas 109-87-5). Pls Click Website Link as below: cas 109-87-5 suppliers

    Prev:Research paperReaction of Dimethoxymethane (cas 109-87-5) with hydroxyl radicals: An experimental kinetic study at temperatures above 296 K and pressures of 2, 5, and 10 bar
    Next:Selective deprotection of alkyl esters using MAGNESIUM METHOXIDE (cas 109-88-6))

  • Back】【Close 】【Print】【Add to favorite
Periodic Table
    Related Products