Publisher: American Chemical Society (ACS)

Issue: 2

License:

Publication date(s): 2016/02/05 (print) 2015/12/29 (online)

Pages: 677-680

Volume: 6 Issue: 2

Journal: ACS Catalysis

Link: https://pubs.acs.org/doi/pdf/10.1021/acscatal.5b01936

URL: http://dx.doi.org/10.1021/acscatal.5b01936

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.