Recent Developments in Rh Catalysts

Dear Colleagues,

This Special Issue of Catalysts is devoted to Rh and Rh-related catalysts, which play an outstanding role in many technologically important catalytic reactions. Recently, Rh has been receiving considerable attention because of its high catalytic potential for producing hydrogen from hydrogen-containing molecules to power fuel cells. Catalytic reactions of oxygenated hydrocarbons as end products and as reactants have been the focus of studies for decades, with publications dating back to the early seventies. Hydrogenation of CO and CO₂ to form hydrocarbons and oxygenated products over supported and unsupported Rh has been the subject of extensive research of Rh and Rh-containing catalysts. Supported Rh catalysts are promising candidates in the thermal and photocatalytic reduction of CO₂ with hydrogen and with different saturated and unsaturated hydrocarbons. The reactions of CO₂, an interesting and attractive C1 building block, not only contribute to alleviating global climate change induced by the increasing CO₂ emissions, but also open up new sustainable routes for synthesizing useful feedstock chemicals and fuels. Rh supported on oxide supports is an excellent catalyst for environmentally important technologies, such as CO oxidation and NO_x reduction. This Issue would supply the catalytic community with the present status of Rh-related catalysts exhibited in many catalytic reactions. This volume involves studies relating to the catalytic effects of Rh in a wide reaction scale, the modification of Rh surfaces, and the interaction mechanism between Rh and support, including the strong metal interactions and its importance in the catalytic reactions. Special attention will be given to the promoting effect of a small amount of Rh in the catalytic behavior of supported metal catalysts, including the formation of alloy in bimetallic systems, on different supports. The study of morphological changes of Rh during the reaction is also the subject of this Special Issue.

Prof. Dr. János Kiss
Dr. Imre Kovács
Guest Editors

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