MFI Acid Catalysts with Different Crystal Sizes and Porosity for the Conversion of Furanic Compounds in Alcohol Media

authors	Antunes, MM; Lima, S; Fernandes, A; Magalhaes, AL; Neves, P; Silva, CM; Ribeiro, MF; Chadwick, D; Hellgardt, K; Pillinger, M; Valente, AA
nationality	International
journal	CHEMCATCHEM
author keywords	biomass; heterogeneous catalysis; mesoporous materials; oxygen heterocycles; zeolites
keywords	MESOPOROUS ZSM-5 ZEOLITES; RENEWABLE LEVULINIC ACID; ACTIVE SULFATED ZIRCONIA; ETHYL LEVULINATE; TRANSFER HYDROGENATION; HIERARCHICAL ZSM-5; NAOH/TETRABUTYLAMINE HYDROXIDE; LIGNOCELLULOSIC BIOMASS; DESILICATED ZSM-5; FURFURYL ALCOHOL
abstract	Solid acid catalysts possessing MFI topology and different crystal sizes and porosities were explored for the conversion of carbohydrate-biomass- derived alpha-angelica lactone and 5-(hydroxymethyl) furfural, in 1-butanol at T= 120-170 degrees C, to give levulinate esters and furanic ethers. Micro/mesoporous microcrystalline catalysts were prepared by post-synthesis base/acid treatments of ZSM-5 zeolite; the influence of the desilication (base) conditions on the material properties was investigated. A nanocrystalline ZSM-5 sample was synthesised by using hydrothermal, dynamic conditions and used as a reference material. A comparison of the catalytic performances of materials featuring different morphological, textural, and acid properties highlights a complex interplay between the acid and textural properties. The best-performing catalyst (MZS0.6) was obtained by post-synthesis-treatment; fairly good catalytic stability was confirmed by catalyst recycling, contact tests, and characterisation of the spent catalyst. MZS0.6 was compared with the macrorecticular ion-exchange resin Amberlyst-15, chosen as a benchmark solid acid catalyst, in the two reaction systems.
publisher	WILEY-V C H VERLAG GMBH
issn	1867-3880
isbn	1867-3899
year published	2017
volume	9
issue	14
beginning page	2747
ending page	2759
digital object identifier (doi)	10.1002/cctc.201601236
web of science category	Chemistry, Physical
subject category	Chemistry
unique article identifier	WOS:000406243100019