Hydrogenolysis of Glycerol to Propanediols over Nano-Ru/C Catalyst with Ionic Liquid Addition

Abstract:

Supported ruthenium catalyst on nano-activated carbon (2%Ru/C) and titania (2%Ru/TiO2) were prepared by wet impregnation technique with and without ionic liquid addition (choline chloride with different Lewis acid). Mole ratio of choline chloride and Lewis acid were fixed at 1:3. Catalysts evaluation was performed by glycerol hydrogenolysis reaction at 100°C with initial hydrogen pressure 20 bars for 7 hours reaction. The results showed that supported ruthenium on activated carbon acetylene black with addition of choline chloride/zinc (II) chloride catalyst indicated 30.7% of glycerol converted to 20.6% propylene glycol and 11.4% ethylene glycol. Catalysts profile of XRD showed graphitic phase which could reduce catalyst poisoning effect. XPS analysis showed that Ru/CC-ZnCl2/C catalyst spesies was in Ru4+ state before reaction. In the meantime, mapping analysis using FE-SEM showed well dispersion of ruthenium metal on nano-activated carbon acetylene black with addition of choline chloride/zinc (II) chloride gave the highest selectivity to propanediol. Furthermore, smaller size of nano activated carbon (30-60 nm) than titania (90-120nm) analyzed by TEM may the main course in increasing the conversion of glycerol.

• Periodical: Advanced Materials Research (Volume 173)
• Pages: 49-54
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.173.49
• Online since: December 2010
• Authors: Aznira Alias, Noraini Hamzah, Mohd Ambar Yarmo
• Keywords: Glycerol, Hydrogenolysis, Ionic Liquid (IL), Nano Ru/C, Propanediol

References

[1] M.A. Dasari, P.P. Kiatsimkul, W.R. Sutterlin and G.J. Suppes: Applied Catalysis A: General, Vol. 281 (2005), p.225.

DOI: 10.1016/j.apcata.2004.11.033

[2] P. Naresh and H. Brian Value-added utilization of crude glycerol from biodiesel production. A survey of current research activity, in the Annual International meeting, Oregon, Portland, July 9-12, paper 066223(2006).

[3] H. Biebl and S. Marten: Applied Microbiol. Biotechnology, Vol. 44 (1995), p.15.

[4] Y. Kusunoki, M. Tomohisa, K. Kimio, and T. Keichii: Catalyst Communication, Vol. 6 (2005), p.645.

[5] E.P. Maris and J.D. Robert: Journal of Catalyst, Vol. 249 (2007), p.328.

[6] L. Ma and D. He: Catalysis Today, Vol. 149 (2009), p.148.

[7] M. Balaraju, V. Rekha, P.S. Sai Prasad, B.L.A. Prabhavathi Devi, R.B.N. Prasad and N. Lingalah: Applied Catalyst A: General, Vol. 354 (2009), p.82.

[8] M. Tomohisa, K. Yohei, K. Kimio and T. Keichii: Journal of Catalysis, Vol. 240 (2006), p.213.

[9] J. Fabian, J.M. Andanson and S.B. Alfon: Journal of Catalysis, Vol. 268 (2009), p.356.

[10] O. Katharina, R. Daniel, E. Martin, S. Andreas, A. Daniel, L. Horald and W. Peter: Applied Catalysis A: General, Vol. 356 (2008), p.356.

[11] M. Tomohisa, K. Schuichi, K. Kimio and T. Keichii: Applied Catalyst A: General, Vol. 318 (2007), p.244.

[12] F.M. John, F.S. William, E.S. Peter, and Kenneth, D.B. Handbook of X-Ray Photoelectron Spectroscopy, (Physical Electronics, Inc., Minnesota 1995).