Abstract
Unprecedented bimetallic cobalt–rhodium layered hydrotalcite-type materials (CoRh-HT) were successfully prepared and used as potential catalysts for highly selective hydroformylation of alkenes to aldehydes. This is the first report on hydroformylation studied using a Co–Rh-based heterogeneous catalyst that contains cobalt present in the Co2+ and Co3+ oxidation states and rhodium present as an Rh3+ ion in the framework. Presence of Rh3+ along with Co2+ and Co3+ in the layered framework was confirmed based on various physicochemical studies such as HRTEM, powder X-ray diffraction, and X-ray photoelectron spectroscopy.
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