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One-pot conversion of sugar and sugar polyols to n-alkanes without C-C Dissociation over the Ir-ReOx /SiO2 catalyst combined with H-ZSM-5.

ChemSusChem (2013-03-07)
Kaiyou Chen, Masazumi Tamura, Zhenle Yuan, Yoshinao Nakagawa, Keiichi Tomishige
ABSTRACT

High (≥95 % C) yields of n-hexane and n-pentane were obtained by hydrogenolysis of aqueous sorbitol and xylitol, respectively, at 413-443 K by using the Ir-ReOx /SiO2 catalyst combined with H-ZSM-5 as a cocatalyst and n-dodecane as a cosolvent. The direct production of n-hexane from glucose or cellobiose can be achieved by using the same system. The catalyst can be reused simply by the removal of the n-dodecane phase, which contains the product alkane, and the addition of fresh n-dodecane and substrate.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Iridium, powder, 99.9% trace metals basis
Sigma-Aldrich
Iridium, wire, diam. 0.15 mm, 99.9% trace metals basis
Sigma-Aldrich
Iridium, evaporation slug, diam. × L 0.6 cm × 1.2 cm, 99.9% trace metals basis
Sigma-Aldrich
Iridium, black, powder, −200 mesh, ≥99% trace metals basis
Sigma-Aldrich
Iridium, foil, thickness 0.25 mm, 99.9% trace metals basis