On the role of Zr to facilitate the synthesis of diesel and jet fuel range intermediates from biomass-derived carbonyl compounds over aluminum phosphate

Heterogeneous zeolite/zeotype catalysts are attractive for converting renewable biomass-derived chemicals into transportation fuels by aldol condensation reactions, which provide a simple strategy to improve carbon numbers. Herein, Zr-doped aluminum phosphate (ZrAPO-5) were applied efficient syntheses of diesel and jet fuel range C11, C12 C16 intermediates from furfural (FF) cyclohexanone (CH). Incorporation Zr in the APO-5 framework facilitated adsorption CO groups FF CH created more stronger acid base sites, co-catalyzed product yields. ZrAPO-5 (Zr/Al = 0.20) yielded up 79.3% single C11 or 80.7% double cross-aldol under appropriate reaction conditions, also realized 83.3% yield self-aldol CH. In addition, catalytic system displayed good excellent yields other value-added condensations alternative carbonyl compounds.