ReO x /TiO2: A Recyclable Solid Catalyst for Deoxydehydration

ReO x /TiO2: A Recyclable Solid Catalyst for Deoxydehydration

Deoxydehydration (DODH) enables the transformation of two adjacent hydroxyl functions into a C–C double bond: e.g., facilitating synthesis of 1,3,5-hexatriene from sorbitol. Here we report the first stable heterogeneous catalyst for DODH based on ReO x supported on TiO2. ReO x /TiO2 exhibits not onl...

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Bibliographic Details
Published in:ACS catalysis Vol. 6; no. 2; pp. 677 - 680
Main Authors: Sandbrink, Lennart, Klindtworth, Elisabeth, Islam, Husn-Ubayda, Beale, Andrew M, Palkovits, Regina
Format: Journal Article
Language:English
Published: American Chemical Society 05-02-2016
Subjects:
deoxydehydration
rhenium
titania
biomass conversion
heterogeneous
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Summary:Deoxydehydration (DODH) enables the transformation of two adjacent hydroxyl functions into a C–C double bond: e.g., facilitating synthesis of 1,3,5-hexatriene from sorbitol. Here we report the first stable heterogeneous catalyst for DODH based on ReO x supported on TiO2. ReO x /TiO2 exhibits not only catalytic activity and selectivity comparable to those of previously described molecular rhenium catalysts but also excellent stability without deactivation over at least six consecutive runs. X-ray absorption spectroscopy (XAFS) measurements indicate a mixture of Re­(VII), Re­(IV), and Re(0) species at a ratio of 0.47:0.27:0.25, remaining comparatively stable during catalysis.
ISSN:2155-5435
2155-5435
DOI:10.1021/acscatal.5b01936