Novel Polymer Stabilized Water Soluble Ru-Nanoparticles as Aqueous Colloidal Fischer-Tropsch Catalysts

作者：Gual Aitor; Delgado Jorge A; Godard Cyril^*; Castillon Sergio; Curulla Ferre Daniel; Claver Carmen

来源：Topics in Catalysis, 2013, 56(13-14): 1208-1219.

DOI：10.1007/s11244-013-0087-1

• Ruthenium nanoparticles
• Soluble nanoparticles
• Stabilizing agents
• Lignins
• Aqueous catalysis
• Fischer-Tropsch reaction

Small water soluble Ru-nanoparticles (ca. 2-5 nm) stabilized by lignins were synthesized by reduction of RuCl3 using H-2. For comparison purposes, small Ru-NPs (ca. 2.0 nm) with narrow size distribution were also synthesized using polyvinylpyrrolidone (PVP) as stabilizer and H-2 and NaBH4 as reducing agents. All these Ru-NPs were active catalysts in Fischer-Tropsch reaction. Interestingly, CO2 was detected as by-product demonstrating that the water gas shift reaction is taking place under these conditions. The Ru-NPs stabilized by lignins were less active (up to 0.49 mol(CO) mol(Ru) (-1) h(-1)) that those stabilized by PVP (up to 3.35 mol(CO) mol(Ru) (-1) h(-1)), exhibiting also higher CO2 production. Several reaction parameters were optimized such as the stirring rate, reducing method, polymer/Ru ratio and size of the Ru-NPs.

• 出版日期2013-9