catalysts Review Review OlefinsOlefins fromfrom BiomassBiomass Intermediates:Intermediates: AA ReviewReview 1 1,2, VasilikiVasiliki Zacharopoulou Zacharopoulou1 andand AngelikiAngeliki A.A. LemonidouLemonidou 1,2,** 1 Department of Chemical Engineering, Aristotle University of Thessaloniki, University Campus, 1 Department of Chemical Engineering, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece;
[email protected] 54124 Thessaloniki, Greece;
[email protected] 2 Chemical Process Engineering Research Institute (CERTH/CPERI), P.O. Box 60361 Thermi, 2 Chemical Process Engineering Research Institute (CERTH/CPERI), P.O. Box 60361 Thermi, Thessaloniki 57001, Greece 57001 Thessaloniki, Greece * Correspondence:
[email protected]; Tel.: +30‐2310‐996‐273 * Correspondence:
[email protected]; Tel.: +30-2310-996-273 Received: 16 November 2017; Accepted: 19 December 2017; Published: Received: 16 November 2017; Accepted: 19 December 2017; Published: 23 December 2017 Abstract:Abstract: Over the last decade, increasing demand for olefinsolefins and theirtheir valuablevaluable productsproducts hashas promptedprompted researchresearch onon novelnovel processesprocesses andand technologiestechnologies forfor theirtheir selectiveselective production.production. As olefinsolefins are predominatelypredominately dependent on fossil resources, their production is limited by thethe finitefinite reservesreserves and the associated economic and environmental concerns.concerns. The need for alternative routes for