Synthesis of Novel Geopolymer Supported Nano Bimetallic Catalysts and its Application for Isopropanol Dehydrogenation

Abstract:

A novel geopolymer supported nanobimetallic catalyst for isopropanol dehydrogenation was prepared by modified wet impregnation and reduction method. XRD, SEM, EDX and TEM analysis confirmed formation of amorphous geopolymer from the polymerization of metakaolin and deposition of nanometals over the geopolymer support. The bimetallic catalyst containing 5wt. % Cu and 10wt. % Ni loading over geopolymer shows an excellent performance with 23.18% conversion of isopropanol and 88.24% selectivity to acetone under reaction conditions of 90 °C, 3 hours, and catalyst amount of 0.15g/5.0g of isopropanol. Moreover, the catalyst maintains its catalytic stability without noticeable loss of activity after five cycles.

• Periodical: Key Engineering Materials (Volume 777)
• Pages: 190-195
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.777.190
• Online since: August 2018
• Authors: John Satmon, Zhengfeng Hu, Ming Qiao Zhu*
• Keywords: Geopolymer Material, Heterogeneous Catalyst, Isopropanol Dehydrogenation

References

[1] Y.W. Han, J.Y. Shen, Y. Chen, Microkinetic analysis of isopropanol dehydrogenation over Cu/SiO2 catalyst, Appl. Catal. A-Gen. 205 (2001) 79-84.

DOI: 10.1016/s0926-860x(00)00559-7

[2] S.A. El-Molla, Dehydrogenation and condensation in catalytic conversion of iso-propanol over CuO/MgO system doped with Li2O and ZrO2, Appl. Catal. A-Gen. 298 (2006) 103-108.

DOI: 10.3390/ecsoc-9-01475

[3] S.A. El-Molla, S.M. Abdel-all, M.M. Ibrahim, Influence of precursor of MgO and preparation conditions on the catalytic dehydrogenation of iso-propanol over CuO/MgO catalysts, J. Alloy Comp. 484 (2009) 280-285.

DOI: 10.1016/j.jallcom.2009.04.078

[4] R.M. Riouxa, M.A. Vannice, Dehydrogenation of isopropyl alcohol on carbon-supported Pt and Cu–Pt catalysts, J. Catal. 233 (2005) 147-165.

DOI: 10.1016/j.jcat.2005.04.020

[5] O.A. Ibraheem, S.A. El-Mollab, A.I. Ibraheem, M.S. Tarek, Synthesis and characterization of metal oxides loaded-HZSM-5 and their implication for selective conversion of isopropanol, Micro. Meso. Mater. 197 (2014) 48-57.

DOI: 10.1016/j.micromeso.2014.05.039

[6] J. Davidovits, Synthesis of new high temperature geo-polymers for reinforced plastics/composites, Soci. Plast. Eng. Brookfield Center USA 4 (1979) 151-154.

[7] J. Davidovits, Geopolymer Chemistry and Applications, third ed., Geopolymer Institute, France, (2011).

[8] S. Candamano, P. Frontera, A. Macario, F. Crea, Preparation and characterization of active Ni-supported catalyst for syngas production, Chem. Eng. Res. Desi. 96 (2015) 78-86.

DOI: 10.1016/j.cherd.2015.02.011

[9] S. Alberto, R. Giuseppina, R. Laura, F. Claudio, TiO2-based photocatalytic geopolymers for nitric oxide degradation, Mater. 9 (2016) 513-525.

[10] S. Sharma, M. Dinesh, S.J. Chen, K.S. Dong, Calcium-modified hierarchically porous aluminosilicate geopolymer as a highly efficient regenerable catalyst for biodiesel production, RSC Adv. 5 (2015) 65454-65461.

DOI: 10.1039/c5ra01823d

[11] J.L. Bell, P. Sarin, J.L. Provis, R.P. Haggerty, P.E. Driemeyer, P.J. Chupas, D.J. Van, Atomic structure of a cesium aluminosilicate geopolymer: A pair distribution function study, Chem. Mater. 20 (2008) 4768-4776.

DOI: 10.1021/cm703369s

[12] M.B. Ogundiran S. Kumar, Synthesis and characterization of geopolymer from Nigerian clay, Appl. Clay Sci. 208 (2015) 173-181.

DOI: 10.1016/j.clay.2015.02.022