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ReOx/TiO2: a recyclable solid catalyst for deoxydehydration

DOI: 10.1021/acscatal.5b01936 DOI Help

Authors: Lennart Sandbrink (RWTH Aachen) , Elisabeth Klindtworth (RWTH Aachen) , Husn-Ubayda Islam (University College London) , Andrew M Beale (University College London) , Regina Palkovits (RWTH Aachen)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Acs Catalysis , VOL 6 , PAGES 677–680

State: Published (Approved)
Published: December 2015
Diamond Proposal Number(s): 10306

Abstract: 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 ReOx supported on TiO2. ReOx/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.

Journal Keywords: Deoxydehydration; heterogeneous; biomass conversion; titania; rhenium

Subject Areas: Chemistry

Instruments: B18-Core EXAFS

Other Facilities: BM01B at ESRF

Added On: 26/01/2016 12:01

Discipline Tags:

Physical Chemistry Catalysis Chemistry

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) Extended X-ray Absorption Fine Structure (EXAFS)