@article {44418,
	title = {Acid modified H-USY zeolite for efficient catalytic transformation of fructose to 5-hydroxymethyl furfural (biofuel precursor) in methyl isobutyl ketone-water biphasic system},
	journal = {Energy Fuels},
	volume = {32},
	year = {2018},
	month = {FEB},
	pages = {3783{\textendash}3791},
	abstract = {Sustainable process and efficient heterogeneous acid catalyst for the preparation of platform chemicals like 5-hydroxymethyl furfural (5-HMF) from renewable source is much in demand in the context of heterogeneous catalysis. Commercially available solid acid catalyst, H-USY zeolite was modified by treating with aqueous solution of H3PO4 and H2SO4 (10{\textendash}30 wt \%). Modified H-USY was completely characterized by XRD, NH3-TPD, energy dispersive analysis X-ray (EDAX), FT-IR, pyridine-IR, and NMR. Its catalytic performance was evaluated for the fructose conversion to 5-HMF in methyl isobutyl ketone (MIBK){\textendash}water system. Modified H-USY zeolite was identified to have potential in enhancement of 5-HMF yield up to 65\% from 32\% (parent H-USY) with minimum formation of furfural (8\%). H-USY modified with 10 wt \% H3PO4 (10P{\textendash}Y) was found to be the best compared to other studied catalysts, namely, H-USY modified with 20 and 30 wt \% H3PO4 (20 and 30P{\textendash}Y) or 10{\textendash}30 wt \% H2SO4 (10- to 30S{\textendash}Y). Best performance of 10P{\textendash}Y is associated with the optimum combination of moderate acidity (both weak as well as strong), moderate dealumination of Al from extra-framework sites as well as from framework sites of H-USY, formation of new Al{\textendash}O{\textendash}P bonds between framework Al and elemental monomeric phosphorus, presence of Br{\o}nsted as well as Lewis acidity, and creation of mesopores. This gives new insight on a potential heterogeneous acid catalyst for the synthesis of 5-HMF.},
	doi = {10.1021/acs.energyfuels.7b03684},
	author = {Pande, Ashwini and Niphadkar, Prashant and Pandare, Kiran and Bokade, Vijay}
}
