The CO Methanation Over The Rh and Ru Promoted NiO-CeO2-ZrO2 Catalysts

Abstract

In this study, Rh and Ru promoted NiO-CeO₂-ZrO₂ catalysts were prepared with different Rh and Ru loadings (3, 4, 5 (wt.%)) by using two different methods. N₂ phsisorption, X-Ray diffraction, scanning electron microscope with energy-dispersive (SEM-EDX) techniques were used in order to characterize the catalysts. Catalytic activities of the catalysts were tested for CO methanation. The selective CO methanation catalytic activity tests were made over the most active catalysts. The effect of the Rh and Ru loading and preparation method on the CO methanation was discussed. The Ru and Rh have different effect on the surface areas of the catalysts and identifiable peaks for Rh and Ru not observed from the XRD analysis. Because of the low ratio of Rh and Ru in catalysts structures, both Ru and Rh containing catalysts gave similar CO methanation activity results. The 50% conversion temperatures of the 3% Ru/NiO-CeO₂-ZrO₂ catalysts which were prepared by the co-precipitation and surfactant assisted co-precipitation are 191 °C and 185 °C, respectively. Selective CO methanation was made over the 3% Ru/NiO-CeO₂-ZrO₂ catalysts. Catalysts gave good activity until 300 °C. Because of the reversed water gas shift reaction activities of the catalysts were decreased after this temperature

Keywords

• Methanation,Catalysts,Surfactant,Carbonmonoxide

References

1. Yaccato, K., Carhart, R., Hagemayer, A., Lesik,A., Strasser, P., Volpe Jr. A.F., Turner, H., Weinberg, H., Graselli, R.K., Brooks, C. “Competitive CO and CO2 methanation over supported noble metal catalysts in high throughput scanning mass spectrometer”, Appl. Catal. A-Gen., 296, 30-48, (2005).
2. Fujita, S.I., Takezawa, N. “Difference in the selectivity of CO and CO2 methanation reactions”, Chem. Eng. J., 68, 63-68, (1997).
3. Xu, G., Chen, X., Zhang, Z.G., “Temperature-staged methanation: An alternative method to purify hydrogen-rich fuel gas for PEFC”, Chem. Eng. J., 121, 97-107, (2006).
4. Dagle, R.A., Wang, Y., Xia, G.G., Strohm, J.J., Holladay, J., Palo, D.R., “Selective CO methanation catalysts for fuel processing applications”, Appl. Catal. A-Gen., 326, 213-218, (2007).
5. Hakeem, A.A., Rajendran, J., Kapteijn, F., Makee, M., “Effect of Rhodium on the water-gas shift performance of Fe2O3/ZrO2 and CeO2/ZrO2: Influence of rhodium precursor”, Catal. Today., 242, 168-177, (2015).
6. Galletti, C., Dijinovic, P., Specchia, S., Batista, J., Levec, J., Pintar, A., Specchia, V., “Influence of the preparation method on the performance of Rh catalysts on CeO2 for WGS reaction”, Catal. Today., 176, 336-339, (2011).
7. De Rogatis, L., Montini, T., Casula, M.F., Fornasiero, P., “Design of Rh@Ce0.2Zr0.8O2-Al2O3 nanocomposite for ethanol steam reforming”, J. Alloys Comp., 451, 516-520, (2008).
8. Birst, A., Epron, F., Descorme, C., Duprez, D., “Ethanol steam reforming over Rh/CexZr1-xO2 catalysts: Impact of the CO-CO2-CH4 interconversion reactions on the H2 production”, Appl. Catal. B-Environ., 79, 17-25, (2008).

9. Wan Abu Bakar, W.A., Ali, R., Toemen, S., “Catalytic methanation reaction over supported nickel-rhodium oxide for purification of simulated natural gas”, J Nat. Chem., 20, 585-594, (2011).
10. Derekaya Balıkçı, F., Ermergen, D., “The Selective CO Methanation Over The CeO2/ZrO2 Composed NiO and Co3O4 Catalysts”, Turk. J. Chem., 38, 568-580, (2014).
11. Matos, I., Fernandes, S., Guerreiro, L., Barata, S., Ramos, A.M., Vital, J., Fonseca, I.M., “The effect of surfactant on the carbon xeorgels”, Microporous Mesoporous Mater., 92, 38-46, (2006).
12. Boonamnuayvitaya, V., Tayamanon, C., Sae-ung, S., Tanthapanichakoon, W., “Synthesis and characterization of porous media produced by a sol-gel method”, Chem. Eng. Sci., 61, 1686-1691, (2006).
13. Zou, Z.Q., Meng, M., Guo, L.H., Zha, Y.Q., “Synthesis and characterization of CuO/Ce1-xTixO2 catalysts used for low-temperature CO oxidation”, J. Hazard. Mater., 163 (2-3), 835-842, (2009).
14. Zamani, A.H., Ali, R., Abu Bakar, W.A.W., “Optimization of CO2 methanation reaction over M*/Mn/Cu–Al2O3 (M*: Pd, Rh and Ru) catalysts”, J. Ind. Eng. Chem., 29, 238–248, (2015).
15. Rombia, E., Cutrufello, M.G., Atzori, L., Monaci, R., Ardu, A., Gazzoli, D., Deiana, P., Ferino, I., “CO methanation on Ni-Ce mixed oxides prepared by hard templatemethod”, Appl. Catal. A-Gen., 515, 144–153, (2016).
16. Osorio Vargus, P., Campos, C.H., Navarro, R.M., Fierro, J.L.G., Reyes, P., “Rh/Al2O3-La2O3 catalysts promoted with CeO2 for ethanol steam reforming reaction”, J. Molec. Catal. A-Chem. In press, DOI: 10.1016/j.molcata.2015.06.031
17. Mondal, T., Pant, K.K., Dalai, A.K., “Oxidative and non-oxidative steam reforming of crude bio-ethanol for hydrogen production over Rh promoted Ni/CeO2-ZrO2 catalyst”, Appl. Catal. A-Gen., 499, 19-31, (2015).
18. De Coprariss, B., De Filippis, P., Palma, V., Petrullo, A., Ricca, A., Ruocco, C., Scarsella, M., “Rh, Ru and Pt ternary perouskites type oxides BaZr(1-x)MexO3 for methane dry reforming”, Appl. Catal. A-Gen. 517, 47-55, (2016).
19. Wang, L., Xu, S., Chu, W., Yang, W., “Influence of Noble Metals On the Direct Oxidation of Ethylene to Acetic Acid over NM/WO3-ZrO2 (NM= Ru, Rh, and Pd) Catalysts”, Chinese. J. Catal., 30 (12), 1281-1286, (2009).
20. Yan, Q.G., Wu, T.H., Weng, W.Z., Toghiani, H., Toghiani, R.K., Wan, H.L., Pittmann Jr, C.U., “Partial oxidation of methane to H2 and CO over Rh/SiO2 and Ru/SiO2 catalysts”, J. Catal., 226, 247-259, (2004).
21. Kusama, H., Bando, K.K., Okabe, K., Arakawa, H., “Effect of metal loading on CO2 hydrogenation reactivity over Rh/SiO2 catalysis”, Appl. Catal. A-Gen., 197, 255-268, (2000).
22. Surisetty, V.R., Dalai, A.K., Kozinski, J., “Effect of Rh promoter on MWCNT-supported alkali-modified MoS2 catalysts for higher alcohols synthesis from CO hydrogenation”, Appl. Catal. A-Gen., 381, 282-288, (2010).
23. Tada, S., Kikuchi, R., Takagaki, A., Sugawara, T., Oyama, S.T., “Study of Ru Ni/TiO2 catalysts for selective CO methanation”, Appl. Catal. B-Environ., 140– 141, 258– 264, (2013).
24. Panagiotopoulou, P., Kondarides, D. I., Verykios, X. E., “Selective methanation of CO over supported Ru catalysts”, Appl. Catal. B-Environ., 88, 470–478, (2009).
25. Djinovi´c, P., Galletti, C., Specchia, S., Specchia, V., “Ru-based catalysts for CO selective methanation reaction in H2-rich gases”, Catal. Today., 164, 282–287, (2011).
26. Liu, Q., Liu, Z., Liao, L. W., Dong, X., “Selective CO methanation over amorphous Ni-Ru-B/ZrO2 catalyst for hydrogen-rich gas purification”, J. Nat. Gas. Chem., 19, 497–502, (2010).
27. Xiong, J., Dong, X., Li, L., “CO selective methanation in hydrogen-rich gas mixtures over carbon nanotube supported Ru-based catalysts”, J. Nat. Gas. Chem., 21, 445–451, (2012).