Synthesis of Methyl Lactate from Glucose over Alkali-Modified Sn-H-Y Catalysts
: Majidov, Ramin; Aho, Atte; Vajglova, Zuzana; Kumar, Narendra; Lassfolk, Robert; Angervo, Ilari; Tirri, Teija; Lastusaari, Mika; Eränen, Kari; Mäki-Arvela, Päivi; Hietala, Jukka; Murzin, Dmitry Yu.
Publisher: SPRINGER
: DORDRECHT
: 2025
: Waste and Biomass Valorization
: WASTE AND BIOMASS VALORIZATION
: WASTE BIOMASS VALORI
: 19
: 1877-2641
: 1877-265X
DOI: https://doi.org/10.1007/s12649-025-02930-z(external)
: https://link.springer.com/article/10.1007/s12649-025-02930-z(external)
: https://research.utu.fi/converis/portal/detail/Publication/491365041(external)
Glucose transformation to methyl lactate was investigated over microporous Sn-H-Y- zeolite with SiO2/Al2O3 ratio of 30 as well as alkali metal modified mesoporous dealuminated Sn-H-Y-zeolites in the temperature range of 150-180oC. The catalysts were synthesized either by evaporation-impregnation or ion-exchange methods using a two-step procedure for Sn-and K-modification. The catalysts were characterized by several physico-chemical methods including SEM, TEM, pyridine adsorption-desorption FTIR, UV-VIS spectroscopy, solid state NMR-spectroscopy, nitrogen adsorption, TGA and CHNS for spent catalysts. The highest yield of methyl lactate of 72% was obtained at 150oC over dealuminated K-Sn-H-Y-30 catalyst at complete glucose conversion. Especially low K/Sn ratio was preferential for maximizing methyl lactate yield. Catalyst regeneration and leaching were also investigated.
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Open access funding provided by Åbo Akademi University.
Samples for electron microscopy were processed and analyzed at the Electron Microscopy Laboratory, Institute of Biomedicine, University of Turku, which receives financial support from Biocenter Finland.
