Catalytic isomerization of D-glucose to D-fructose over BEA base zeotypes using different energy supply methods

authors	Antunes, MM; Falcao, D; Fernandes, A; Ribeiro, F; Pillinger, M; Rocha, J; Valente, AA
nationality	International
journal	CATALYSIS TODAY
author keywords	Glucose; Isomerization; Base catalysis; Hierarchical zeolite Beta; Microwave; Ultrasound waves
keywords	CARBON-DIOXIDE; ZEOLITE-BETA; LIGNOCELLULOSIC BIOMASS; ALKALINE-DEGRADATION; ALPHA-PINENE; SI/AL RATIO; SN-BEA; ACID; ADSORPTION; PERFORMANCE
abstract	The isomerization of D-glucose (Glu) to D-fructose (Fru) is a key step in the selective conversion of carbohydrate biomass to renewable products and has long been of great importance in the food and beverage industry. Expansion of the Fru market (food, non-food) poses various challenges to enhance productivity, where energy efficiency and use of cheap, robust synthetic catalysts may play important roles. Here, Glu isomerization, using water as the sole solvent, was studied using (i) micro/mesoporous catalysts of different compositions prepared from commercial zeolite Beta, and (ii) different energy supply methods, namely conventional conductive heating, microwave irradiation and ultrasound waves, at 75 degrees C. The type of energy supply method influenced the initial turnover frequency. Besides catalytic activity, the stability is important, which depended on the catalytic material properties (e.g., composition, textural properties), type of energy supply method and reaction temperature. Favourable results were verified for Glu isomerization using a hierarchical potassium/magnesiumcontaining Beta catalyst and ultrasound waves, at 75 degrees C.
publisher	ELSEVIER
issn	0920-5861
isbn	1873-4308
year published	2021
volume	362
beginning page	162
ending page	174
digital object identifier (doi)	10.1016/j.cattod.2020.03.024
web of science category	13
subject category	Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
unique article identifier	WOS:000601205100002