@article {47002,
	title = {Integration of heterogeneous acid and base catalysis for clean synthesis of jet-fuel precursor from carbohydrates},
	journal = {ChemistrySelect},
	volume = {5},
	year = {2020},
	month = {JAN },
	pages = {392-400},
	type = {Article},
	abstract = {<p>C-12 branched alkane fuel precursor was produced from carbohydrates using an efficient integrated solid acid and base catalysis approach involving: i) isomerisation-dehydration of carbohydrates to 5-(hydroxymethyl)furfural (HMF) over solid acid catalyst having both Lewis and Bronsted sites) in a biphasic MIBK (methylisobutylketone): water + DMSO solvent system and ii) Claisen-Schmidt condensation of crude HMF with MIBK over solid base catalyst. Initially, high yield of jet fuel precursor, (E)-1-(5-(hydroxymethyl)furan-2-yl)-5-methylhex-1-en-3-one from pure HMF and MIBK was achieved over basic CaMgAl(231) catalyst. The glucose dehydration to HMF was optimized in biphasic MIBK: H2O-NaCl: DMSO (8:1.5:0.5; v/v/v) system, with complete glucose conversion and 42\% HMF yield over Zr-Mont possessing both Lewis and Bronsted acid sites. In an integrated dehydration + Claisen-Schmidt condensation sequence, Zr-Mont catalyst was filtered off and the crude HMF with MIBK underwent Claisen-Schmidt condensation over CaMgAl(231) catalyst. The overall 32\% yield of Claisen-Schmidt condensation product was achieved from glucose. MIBK acting also as a product extractant, could be recovered upto 80\%.</p>
},
	keywords = {Claisen-Schmidt condensation, dehydration, integrated, jet-fuel precursor, renewable},
	issn = {2365-6549},
	doi = {10.1002/slct.201903735},
	author = {Shinde, Suhas and Tarade, Komal and Mitra, Gaurav and Rode, Chandrashekhar}
}
