Hydroformylation of Alkenes over Phosphorous-Free Rhodium Supported on N-Doped Silica

A new phosphorous-free rhodium supported on a nitrogen-doped silica was successfully used as a catalyst for the hydroformylation of alkenes. The obtained material and the catalyst were characterized by XRD, XPS, FTIR, SEM, TEM, ICP AES, and low-temperature nitrogen adsorption-desorption measurements. The catalytic performance was studied by the example of the hydroformylation of octene-1 at temperatures of 80-140 degrees C and a pressure of 5.0 MPa. The catalyst provided a 99% conversion of 1-octene with a 98% yield of aldehydes and showed a good conversion of styrene and cyclohexene. The catalyst can be repeatedly used in ten consecutive cycles, with its activity remaining constant.

Automated summary

A new phosphorous-free rhodium catalyst supported on nitrogen-doped silica was developed for the hydroformylation of alkenes. The catalyst and obtained material were thoroughly characterized using various techniques. The catalyst exhibited excellent performance in the hydroformylation of octene-1, achieving high conversions and yields for aldehydes. It also showed good activity for styrene and cyclohexene, and could be used repeatedly without significant loss of activity.