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- W2510179568 abstract "Abstract A highly selective self‐condensation of glycolaldehyde to different C 4 molecules has been achieved using Lewis acidic stannosilicate catalysts in water at moderate temperatures (40–100 °C). The medium‐sized zeolite pores (10‐membered ring framework) in Sn‐MFI facilitate the formation of tetrose sugars while hindering consecutive aldol reactions leading to hexose sugars. High yields of tetrose sugars (74 %) with minor amounts of vinyl glycolic acid (VGA), an α‐hydroxyacid, are obtained using Sn‐MFI with selectivities towards C 4 products reaching 97 %. Tin catalysts having large pores or no pore structure (Sn‐Beta, Sn‐MCM‐41, Sn‐SBA‐15, tin chloride) led to lower selectivities for C 4 sugars due to formation of hexose sugars. In the case of Sn‐Beta, VGA is the main product (30 %), illustrating differences in selectivity of the Sn sites in the different frameworks. Under optimized conditions, GA can undergo further conversion, leading to yields of up to 44 % of VGA using Sn‐MFI in water. The use of Sn‐MFI offers multiple possibilities for valorization of biomass‐derived GA in water under mild conditions selectively producing C 4 molecules." @default.
- W2510179568 created "2016-09-16" @default.
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- W2510179568 date "2016-08-26" @default.
- W2510179568 modified "2023-10-16" @default.
- W2510179568 title "Shape-selective Valorization of Biomass-derived Glycolaldehyde using Tin-containing Zeolites" @default.
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- W2510179568 doi "https://doi.org/10.1002/cssc.201600757" @default.
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