Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts

Expeditious isomerization of glucose to fructose in aqueous media over sodium titanate nanotubes

“…† Nevertheless, the catalyst stimulated the maximum fructose productivity within relatively shorter residence time than the reported Lewis base catalysis, where slightly harsher conditions were employed (using more than 20% catalyst loading, 100 C, and 30 min). 8 Therefore, the plausible cause for this comparable yield achievement is due to leaching of Na + ions, and surface passivation by strongly adsorbed unwanted organic compounds led to catalyst deactivation. 16 Catalyst recycle-ability and regeneration…”

“…2,[4][5][6] In this context, a heterogeneous catalytic approach is preferred owing to the higher selectivity and yield, operation under a wide range of conditions, minimal side product generation, facility of recovery and regeneration, and environmentally safe process. 7 To date, the selective glucose to fructose conversion has been demonstrated using a different category of solid materials, including modied zeolites, [8][9][10] metal oxides, 11 hydrotalcites, 12 and metallosilicates. 13 Therefore, GI reaction is possible through Lewis acid and/or Lewis base catalysis, however, each of the protocols undergo dissimilar reaction pathways resulting in delivering varied nal product concentrations.…”

MgO‐ZrO2 Mixed Oxides as Effective and Reusable Base Catalysts for Glucose Isomerization into Fructose in Aqueous Media

“…Note that mannose was not detected in any significant amount during the reaction, therefore, no epimerization reactions of glucose occurred under the experimental conditions used in this study. It was reported that mannose is hardly produced or always formed as a minor product in the base‐catalyzed isomerization of glucose . The effect of Mg/Zr atomic ratios was initially investigated, while the other reaction parameters were kept constant (3 wt % glucose concentration at 95 °C for 360 min).…”

Concepts of modern technologies of obtaining valuable biomass-derived chemicals

“…It was observed that the increase in magnesium content in the structure (10 and 15% by weight) significantly improves the degree of glucose conversion (6-49%). However, the yield of fructose was only about 32% [42]. Tests were also carried out with the zeolites A, X, Y and hydrotalcites.…”