authors |
Antunes, MM; Fernandes, A; Falcao, D; Pillinger, M; Ribeiro, F; Valente, AA |
nationality |
International |
journal |
CATALYSIS SCIENCE & TECHNOLOGY |
keywords |
TO-FRUCTOSE ISOMERIZATION; MESOPOROUS ZSM-5; FAST PYROLYSIS; OXYGENATED HYDROCARBONS; ALKALINE-DEGRADATION; BIOMASS CONVERSION; ZEOLITE CATALYSTS; AQUEOUS GLUCOSE; ACID CATALYSTS; SN-MFI |
abstract |
The isomerization of d-glucose to d-fructose is an important transformation in food and biomass chemistry, for which the use of robust heterogeneous catalysts instead of restrictive enzyme-based systems is desirable, although continues to be very challenging. Herein, solid base catalysts possessing a relatively robust hierarchical MFI structure and (non-toxic) alkali (M = Na, K) and alkaline-earth (Me = Ca, Mg) metals were prepared via top-down strategies and characterized via complementary techniques. The catalyst preparation and regeneration conditions were optimized to achieve superior performances. The highest catalyst stability was reached for the Mg, K-containing hierarchical zeotype prepared via solid-state impregnation (SSI) of Mg, which led to 65% d-fructose selectivity at 45% conversion, 100 degrees C, 2 h, or 99% selectivity at 26% conversion, 75 degrees C. The SSI is an up-scalable process which advantageously avoids the use of solvents, pre-preparation of alkaline liquid solutions and solvent evaporation stages for manufacturing eco-friendly catalysts. |
publisher |
ROYAL SOC CHEMISTRY |
issn |
2044-4753 |
isbn |
2044-4761 |
year published |
2020 |
volume |
10 |
issue |
10 |
beginning page |
3232 |
ending page |
3246 |
digital object identifier (doi) |
10.1039/d0cy00188k |
web of science category |
Chemistry, Physical |
subject category |
Chemistry |
unique article identifier |
WOS:000538156300007
|
ciceco authors
impact metrics
journal analysis (jcr 2019):
|
journal impact factor |
5.721 |
5 year journal impact factor |
5.863 |
category normalized journal impact factor percentile |
74.528 |
dimensions (citation analysis):
|
|
altmetrics (social interaction):
|
|
|