Hydrogenation CO₂ to Formic Acid over Ru Supported on γ-Al₂O₃ Nanorods

Abstract:

A series of catalysts made of ruthenium loaded on γ-Al₂O₃ and γ-Al₂O₃ nanorods were tested for hydrogenation CO₂ to formic acid. Among these catalysts, the catalyst 2% Ru/Al (n) gave the highest activity for hydrogenation CO₂ reaction with the yield of formic acid up to 13.6 mmol /h. The excellent catalytic activity is related to the highly dispersed ruthenium species on the surface of support and abundant hydroxyl groups of the support. The dispersion of ruthenium species and the hydroxyl groups of supports were studied by characterization of XRD, nitrogen adsorption measurement, TEM, D₂/exchange and H₂-TPR in detail. The γ-Al₂O₃ nanorods lead to the highly dispersed ruthenium species and abundant hydroxyl groups, which appears to be more effective for hydrogenation CO₂ to formic acid.

• Periodical: Advanced Materials Research (Volumes 821-822)
• Pages: 1330-1335
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.821-822.1330
• Online since: September 2013
• Authors: Na Liu, Rong Jun Du, Wei Li
• Keywords: Formic Acid, Hydrogenation of CO₂, Supported Ruthenium Catalyst, γ-Al₂O₃ Nanorods

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