Facile Preparation of Noble Metal–Free Cu-Doped Oxidation Catalyst Suitable for Engine Exhaust Gas Treatment
Publication: Journal of Environmental Engineering
Volume 145, Issue 1
Abstract
Carbon monoxide oxidation reaction was carried out over Cu-doped , prepared by a simple and cost-effective route without the aid of any stabilizing agents or solvents. A low-percentage incorporation of Cu of 2% by weight with Ce was sufficient for 100% conversion of CO at a reaction temperature of 300°C. The efficiency of the catalyst remained as such for a sustained period of 5 h. The activity was also tested in the treatment of diesel engine exhaust gas at a very high flow rate of . Complete oxidation of CO and high conversion of hydrocarbons (90%) were achieved at the reasonably moderate temperature of 300°C. In the catalysts, is found to exist in its fluorite structure as revealed from X-ray diffraction (XRD) patterns. Raman spectral analysis indicated lattice expansion and oxygen vacancies upon incorporation of Cu, whereas X-ray photoelectron spectroscopic analysis pointed out the existence of Cu in the forms of CuO and as well as the presence of Ce in its oxidation state, all of which could facilitate oxidation reactions. The nanoparticles were found to be irregular in shape, with size varying from 10 to 20 nm, as evident from the transmission electron microscopic images and crystallite size determination from XRD patterns, confirming the efficiency of present preparation method in the formation of nanoparticles. Catalyst characterization studies and catalytic oxidation results indicated the formation of lattice-expanded solid solution as well as highly dispersed copper oxides as the active centers of the catalyst.
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Acknowledgments
Silija Padikkaparambil thanks UGC, New Delhi, India for the fellowship under the scheme “Post-Doctoral Fellowship for SC/ST students” for the year 2013–2014. The authors thank Sree Neelakanta Government Sanskrit College Pattambi and University of Calicut for providing the facilities for carrying out the research work. SAIF-STIC, CUSAT, Kochi, India, is acknowledged for TEM and SEM analyses. IIT Kanpur is acknowledged for XPS analysis, and Dept. of Chemistry, Calicut University is acknowledged for Raman spectral analysis. M.A. College Kothamangalam is acknowledged for BET SA analysis.
References
Armor, J. N. 1999. “The multiple roles for catalysis in the production of .” Appl. Catal. A 176 (2): 159–176. https://doi.org/10.1016/S0926-860X(98)00244-0.
Chadwick, A. V., and S. L. P. Savin. 2009. “EXAFS study of nanocrystalline CeO2 samples prepared by sol-gel and ball-milling routes.” J. Alloys Compd. 488 (1): 1–4. https://doi.org/10.1016/j.jallcom.2006.10.164.
Chang, L. H., N. Sasirekha, B. Rajesh, and Y. W. Chen. 2007. “CO oxidation on ceria- and manganese oxide-supported gold catalysts.” Sep. Purif. Technol. 58 (1): 211–218. https://doi.org/10.1016/j.seppur.2007.07.031.
Chen, M. S., Y. Cai, Z. Yan, K. K. Gath, S. Axnanda, and D. Wayne Goodman. 2007. “Highly active surfaces for CO oxidation on Rh, Pd, and Pt.” Surf. Sci. 601 (23): 5326–5331. https://doi.org/10.1016/j.susc.2007.08.019.
Cho, B. K. 1991. “Chemical modification of catalyst support for enhancement of transient catalytic activity: Nitric oxide reduction by carbon monoxide over rhodium.” J. Catal. 131 (1): 74–87. https://doi.org/10.1016/0021-9517(91)90324-W.
Djinovic, P., J. Batista, and A. Pinta. 2008a. “Calcination temperature and CuO loading dependence on catalyst activity for water-gas shift reaction.” Appl. Catal. A 347 (1): 23–33. https://doi.org/10.1016/j.apcata.2008.05.027.
Djinovic, P., J. Levec, and A. Pintar. 2008b. “Effect of structural and acidity/basicity changes of CuO-CeO2 catalysts on their activity for water-gas shift reaction.” Catal. Today 138 (3–4): 222–227. https://doi.org/10.1016/j.cattod.2008.05.032.
Dong, Q., S. Yin, C. Guo, and T. Sato. 2012. “Aluminum-doped ceria-zirconia solid solutions with enhanced thermal stability and high oxygen storage capacity.” Nanoscale Res. Lett. 7 (1): 542–546. https://doi.org/10.1186/1556-276X-7-542.
Escribano, V. S., E. F. Lopez, M. Panizza, C. Resini, J. M. G. Amores, and G. Busca. 2003. “Characterization of cubic ceria-zirconia powders by X-ray diffraction and vibrational and electronic spectroscopy.” Solid State Sci. 5 (10): 1369–1376. https://doi.org/10.1016/j.solidstatesciences.2003.07.001.
Fornasieo, P., G. Balducci, J. Kašpar, S. Meriani, R. di Monte, and G. Graziani. 1996. “Metal-loaded solid solutions as innovative catalysts for automotive catalytic converter.” Catal. Today 29 (1–4): 47–52. https://doi.org/10.1016/0920-5861(95)00261-8.
Gawade, P., B. Mirkelamoglu, and U. S. Ozkan. 2010. “The role of support morphology and impregnation medium on the water gas shift activity of ceria-supported copper catalysts.” J. Phys. Chem. C 114 (42): 18173–18181. https://doi.org/10.1021/jp104715w.
Gennari, F. C., T. Montini, P. Fornasiero, and J. J. A. Gamboa. 2008. “Reduction behavior of nanoparticles of Ce0.8Zr0.2O2 produced by different approaches.” Int. J. Hydrogen Energy 33 (13): 3549–3554. https://doi.org/10.1016/j.ijhydene.2007.12.006.
Goodman, D. W., C. H. F. Peden, and M. S. Chen. 2007. “CO oxidation on ruthenium: The nature of the active catalytic surface.” Surf. Sci. 601 (19): L124–L126. https://doi.org/10.1016/j.susc.2007.08.003.
Jadhav, L. D., M. G. Chourashiya, K. M Subhedar, A. K. Tyagi, and J. Y Patil. 2009. “Synthesis of nanocrystalline Gd doped ceria by combustion technique.” J. Alloys Compd. 470 (1–2): 383–386. https://doi.org/10.1016/j.jallcom.2008.02.077.
Judes, J., and V. Kamaraj. 2009. “Sol-gel preparation and characterization of ceria stabilized zirconia minispheres.” J. Sol-Gel Sci. Technol. 49 (2): 159–165. https://doi.org/10.1007/s10971-008-1853-6.
Kim, J. R., W. J. Myeong, and S. K. Ihm. 2007. “Characteristics in oxygen storage capacity of ceria-zirconia mixed oxides prepared by continuous hydrothermal synthesis in supercritical water.” Appl. Catal. B 71 (1–2): 57–63. https://doi.org/10.1016/j.apcatb.2006.08.015.
Kim, J. R., W. J. Myeong, and S. K. Ihm. 2009. “Characteristics of – mixed oxide prepared by continuous hydrothermal synthesis in supercritical water as support of Rh catalyst for catalytic reduction of NO by CO.” J. Catal. 263 (1): 123–133. https://doi.org/10.1016/j.jcat.2009.02.001.
Kruse, N., and S. Chenakin. 2011. “XPS characterization of Au/TiO2 catalysts: Binding energy assessment and irradiation effects.” Appl. Catal. A. 391 (1–2): 367–376. https://doi.org/10.1016/1352-2310(96)00048-9.
Kummer, J. T. 1986. “Use of noble metals in automobile exhaust catalysts.” J. Phys. Chem. 90 (20): 4747–4752. https://doi.org/10.1021/j100411a008.
Li, G., Q. Wang, B. Zhao, and R. Zhou. 2011. “Promoting effect of synthesis method on the property of nickel oxide doped CeO2-ZrO2 and the catalytic behaviour of Pd-only three-way catalyst.” Appl. Catal. B 105 (1–2): 151–162. https://doi.org/10.1016/j.apcatb.2011.04.006.
Li, L., Y. Y. Zhan, Q. Zheng, Y. H. Zheng, C. Q. Chen, and Y. S She. 2009. “Water-gas shift reaction over catalysts: Effect of the thermal stability and oxygen vacancies of supports previously prepared by different methods.” Catal. Lett. 130 (3–4): 532–540. https://doi.org/10.1007/s10562-009-9904-3.
Liu, L., J. Shi, H. Cao, R. Wang, and Z. Liu. 2017. “Fabrication of CeO–MO (M = Cu, Co, Ni) composite yolk-shell nanospheres with enhanced catalytic properties for CO oxidation.” Beilstein J. Nanotechnol. 8: 2425–2437. https://doi.org/10.3762/bjnano.8.241.
Lu, X., X. Li, F. Chen, C. Ni, and Z. Chen. 2009. “Hydrothermal synthesis of prism-like mesocrystal .” J. Alloys Compd. 476 (1–2): 958–962. https://doi.org/10.1016/j.jallcom.2008.09.198.
Luo, J. Y., M. Meng, J. S. Yao, X. G. Li, Y. Q. Zha, X. Wang, and T. Y. Zhang. 2009. “One-step synthesis of nanostructured Pd-doped mixed oxides MOx-CeO2 (M = Mn, Fe, Co, Ni, Cu) for efficient CO and C3H8 total oxidation.” Appl. Catal. B 87 (1–2): 92–103. https://doi.org/10.1016/j.apcatb.2008.08.017.
Luo, M. F., J. M. Ma, J. Q. Lu, Y. P. Song, and Y. J. Wang. 2007. “High-surface area catalysts prepared by a surfactant-templated method for low-temperature CO oxidation.” J. Catal. 246 (1): 52–59. https://doi.org/10.1016/j.jcat.2006.11.021.
Luo, Y., H. O. Seo, and K. D. Kim. 2010. “CO oxidation of Au-Pt nanostructures: Enhancement of catalytic activity of Pt nanoparticles by Au.” Catal. Lett. 134 (1–2): 45–50. https://doi.org/10.1007/s10562-009-0207-5.
Ma, W., and F. Chen. 2013. “CO oxidation on the Ag-doped Au nanoparticles.” Catal. Lett. 143 (1): 84–92. https://doi.org/10.1007/s10562-012-0922-1.
Masiol, M., A. Hofer, S. Squizzato, R. Piazza, G. Rampazzo, and B. Pavoni. 2012. “Carcinogenic and mutagenic risk associated to airborne particle-phase polycyclic aromatic hydrocarbons: A source apportionment.” Atmos. Environ. 60: 375–382. https://doi.org/10.1016/j.atmosenv.2012.06.073.
Murota, T., T. Hasegawa, S. Aozasa, H. Matsui, and M. Motoyama. 1993. “Production method of cerium oxide with high storage capacity of oxygen and its mechanism.” J. Alloys Compd. 193 (1–2): 298–299. https://doi.org/10.1016/0925-8388(93)90377-Y.
Papvasiliou, J., G. Avgouropoulos, and T. Ioannides. 2004. “Production of hydrogen via combined steam reforming of methanol over catalysts.” Catal. Commun. 5 (5): 231–235. https://doi.org/10.1016/j.catcom.2004.02.009.
Park, Y., S. K. Kim, D. Pradhan, and Y. Sohn. 2014. “Surface treatment effects on CO oxidation reactions over Co, Cu, and Ni-doped and codoped catalysts.” Chem. Eng. J. 250: 25–34. https://doi.org/10.1016/j.cej.2014.03.070.
Qi, L., Q. Yu, Y. Dai, C. Tang, L. Liu, H. Zhang, F. Gao, L. Dong, and Y. Chen. 2012. “Influence of cerium precursors on the structure and reducibility of mesoporous catalysts for CO oxidation.” Appl. Catal. B 119–120: 308–320. https://doi.org/10.1016/j.apcatb.2012.02.029.
Reddy, B. M., L. Katta, and G. Thrimurthulu. 2010. “Novel nanocrystalline () solid solutions: Structural characteristics and catalytic performance.” Chem. Mater. 22 (2): 467–475. https://doi.org/10.1021/cm903282w.
Shan, W., Z. Feng, Z. Li, J. Zhang, W. Shen, and C. Li. 2004. “Oxidative steam reforming of methanol on Ce0.9Cu0.1OY catalysts prepared by deposition-precipitation, coprecipitation, and complexation-combustion methods.” J. Catal. 228 (1): 206–217. https://doi.org/10.1016/j.jcat.2004.07.010.
Shen, M., J. Wang, J. Shang, Y. An, J. Wang, and W. Wang. 2009. “Modification ceria-zirconia mixed oxides by doping Sr using the reversed microemulsion for improved Pd-only three-way catalytic performance.” J. Phys. Chem. C 113 (4): 1543–1551. https://doi.org/10.1021/jp808962r.
Solsona, B., E. Aylon, R. Murillo, A. M. Mastral, A. Monzonis, S. Agouram, T. E. Davies, S. H. Taylor, and T. Garcia. 2011. “Deep oxidation of pollutants using gold deposited on a high surface area cobalt oxide prepared by a nanocasting route.” J. Hazard. Mater. 187 (1–3): 544–552. https://doi.org/10.1016/j.jhazmat.2011.01.073.
Sudarsanam, P., B. Hillary, B. Mallesham, B G. Rao, M H. Amin, A. Nafady, A M. Alsalme, B M. Reddy, and S. K. Bhargava. 2016. “Designing CuOx nanoparticle-decorated nanocubes for catalytic soot oxidation: Role of the nanointerface in the catalytic performance of heterostructured nanomaterials.” Langmuir 32 (9): 2208–2215. https://doi.org/10.1021/acs.langmuir.5b04590.
Twigg, M. V. 2006. “Rôles of catalytic oxidation in control of vehicle exhaust emissions.” Catal. Today 117 (4): 407–418. https://doi.org/10.1016/j.cattod.2006.06.044.
Wang, A. Q., P. Punchaipetch, R. M. Wallace, and T. D. Golden. 2003. “X-ray photoelectron spectroscopy study of electrodeposited nanostructured films.” J. Vac. Sci. Technol. B 21 (3): 1169. https://doi.org/10.1116/1.1577569.
Wang, J. A., L. F. Chen, M. A. Valenzuela, A. Montoya, J. Salmones, and P. D. Angel. 2004. “Rietveld refinement and activity of CO oxidation over Pd/Ce0.8Zr0.2O2 catalyst prepared via a surfactant-assisted route.” Appl. Surf. Sci. 230 (1–4): 34–43. https://doi.org/10.1016/j.apsusc.2003.08.111.
Wang, J. Q., M. Q. Shen, Y. An, and J. Wang. 2008. “Ce-Zr–Sr mixed oxide prepared by the reversed microemulsion method for improved Pd-only three-way catalysts.” Catal. Commun. 10 (1): 103–107. https://doi.org/10.1016/j.catcom.2008.08.004.
Wang, X., J. A. Rodriguez, J. C. Hanson, D. Gamarra, A. MartínezArias, and M. Fernandez-Garcıa. 2006. “In situ studies of the active sites for the water gas shift reaction over catalysts: Complex interaction between metallic copper and oxygen vacancies of ceria.” J. Phys. Chem. B 110 (1): 428–434. https://doi.org/10.1021/jp055467g.
Weiyu, S., S. Yaqiong, and J. M. H. Emiel. 2015. “A DFT study of CO oxidation at the (110) Interface.” J. Phys. Chem. C 119 (49): 27505–27511. https://doi.org/10.1021/acs.jpcc.5b09293.
Westerholm, R., A. Christensen, and A. Rosén. 1996. “Regulated and unregulated exhaust emissions from two three-way catalyst equipped gasoline fuelled vehicles.” Atmos. Environ. 30 (20): 3529–3536. https://doi.org/10.1016/1352-2310(96)00048-9.
Xavier, L. P. S., V. R. Perez, A. M. H. Gimenez, D. L. Castello, and A. B. Lopez. 2015. “Simultaneous catalytic oxidation of carbon monoxide, hydrocarbons and soot with Ce-Zr-Nd mixed oxides in simulated diesel exhaust conditions.” Appl. Catal. B 162: 412–419. https://doi.org/10.1016/j.apcatb.2014.07.013.
Yang, Z., B. He, Z. Lu, and K. Hermansson. 2010. “Physisorbed, chemisorbed, and oxidized CO on highly active Cu-CeO2 (111).” J. Phys. Chem. C 114 (10): 4486–4494. https://doi.org/10.1021/jp909174u.
Zerva, C., and C. J. Philippopoulos. 2006. “Ceria catalysts for water gas shift reaction: Influence of preparation method on their activity.” Appl. Catal. B 67 (1–2): 105–112. https://doi.org/10.1016/j.apcatb.2006.04.013.
Zhang, D., Y. Qian, L. Shi, H. Mai, R. Gao, J. Zhang, W. Yu, and W. Cao. 2012. “Cu-doped spheres: Synthesis, characterization, and catalytic activity.” Catal. Commun. 26: 164–168. https://doi.org/10.1016/j.catcom.2012.05.001.
Zhang, L., H. Y. Kim, and G. Henkelman. 2013. “CO Oxidation at the Au-Cu interface of bimetallic nanoclusters supported on CeO2(111).” J. Phys. Chem. Lett. 4 (17): 2943–2947. https://doi.org/10.1021/jz401524d.
Zhang, Y., A. Andersson, and M. Muhammed. 1995. “Nanophase catalytic oxides: I. Synthesis of doped cerium oxides as oxygen storage promoters.” Appl. Catal. B 6 (4): 325–337. https://doi.org/10.1016/0926-3373(95)00041-0.
Zhao, B., Q. Wang, G. Li, and R. Zhou. 2010. “Effect of synthesis condition on properties of Ce0.67Zr0.33O2 mixed oxides and its application in Pd-only three-way catalysts.” J. Alloys. Compd. 508 (2): 500–506. https://doi.org/10.1016/j.jallcom.2010.08.101.
Zou, Z. Q., M. Meng, and Y. Q. Zha. 2009. “Surfactant assisted synthesis, characterizations, and catalytic oxidation mechanisms of the mesoporous MnOx−CeO2 and Pd/MnOx−CeO2 catalysts used for CO and C3H8 oxidation.” J. Phys. Chem. C 114 (1): 468–477. https://doi.org/10.1021/jp908721a.
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Published In
Journal of Environmental Engineering
Volume 145 • Issue 1 • January 2019
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©2018 American Society of Civil Engineers.
History
Received: Jan 10, 2018
Accepted: Jun 29, 2018
Published online: Oct 31, 2018
Published in print: Jan 1, 2019
Discussion open until: Mar 31, 2019
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