Study of catalytic activities of nanostructure copper and cobalt supported ZSM-5 catalysts for conversion of volatile organic compounds
This paper reports the comparison of the activities of nanostructure Cu-ZSM-5 and Co-ZSM-5 catalysts for conversion of ethyl acetate and toluene and deals with the relationship between activity and structure of catalysts. The catalysts were characterized by ICP-AES, XPS, EDX, XRD, SEM, and TEM techniques. Catalytic studies were carried out under atmospheric pressure and in a temperature range of 200-500 °C. Cu-ZSM-5 catalysts showed better activity than Co-ZSM-5, revealing higher activity of copper cations. The higher activity was ascribed to higher electro-negativity, smaller cation radius, good distribution, and specific coordination of copper cations inside Cu-ZSM-5 catalysts. The activity of catalysts increased with the increase in loading at the range of metal loading (
Study of catalytic activities of nanostructure copper and cobalt supported ZSM-5 catalysts for conversion of volatile organic compounds
This paper reports the comparison of the activities of nanostructure Cu-ZSM-5 and Co-ZSM-5 catalysts for conversion of ethyl acetate and toluene and deals with the relationship between activity and structure of catalysts. The catalysts were characterized by ICP-AES, XPS, EDX, XRD, SEM, and TEM techniques. Catalytic studies were carried out under atmospheric pressure and in a temperature range of 200-500 °C. Cu-ZSM-5 catalysts showed better activity than Co-ZSM-5, revealing higher activity of copper cations. The higher activity was ascribed to higher electro-negativity, smaller cation radius, good distribution, and specific coordination of copper cations inside Cu-ZSM-5 catalysts. The activity of catalysts increased with the increase in loading at the range of metal loading (
___
- TEM FTIR Fourier Transmission Infrared Spectroscopy VOCs XRD X-ray Dispersion GHSV Gas hourly space velocity θ D Mean crystal size of ZSM-5 K= Constant of Scherer equation (0.89) Yang, Y.; Xu, X.; Sun, K. J. Hazard. Mater. B, 2007, 139, 140-145.
- D´ıaz. E.; Ord´oez, S.; Vega, A.; Coca, J.; Microporous Mesoporous Mater, 2005, 83, 292-300.
- Zhan, B.; Mod´en,B.; Dakka, J.; Santiesteban, J.; Iglesia, E. J. Catal, 2007, 245, 316-325.
- Kharas, K.; Liu, D.; Robota, H. Catal Today, 1995, 26, 129-145.
- Nicolaides, C.; Sincadu, N.; Scurrell, M. Stud Surf Sci Catal, 2001, 136, 333-338.
- Fajerwerg, K.; Debellefontaine, H. Appl Catal B, 1996, 10, 229-235.
- Wang, L.; Sang, S.; Meng, S.; Zhang, Y.; Qi, Y.; Liu, Z. Mater Lett, 2007, 61, 1675-1678.
- Yamanaka, H.; Hamada, R.; Nibuta, H.; Nishiyama, S.; Tsuruya, S. J Mol Catal A, 2002, 178, 89-95.
- Shibata, Y.; Hamada, R.; Ueda, T.; Ichihashi, Y.; Nishiyama, S.; Tsuruya, S. Ind Eng Chem Res, 2005, 44, 8772.
- Ribeiro, M.; Silva, J.; Brimaud, S.; Antunes, A.; Silva, E.; Fernandes, A.; Magnoux, P. Appl Catal B, 2007, 70, 392.
- Burgos, N.; Paulis, M.; Antxusteg, M.; Montes, M. Appl Catal B, 2002, 38, 251-258.
- Wichterlov, B.; Dedecek, J.; Sobalik, Z.; Proceedings 12thInternational Zeolite Conference, Materials Research Society, Warrendale, 1999.
- Li, Y. J.; Armor, J. N. J. Catal., 1994, 150, 376-387.
- Mortier, W. J.; Compilation of Extraframework Sites in Zeolites, Butterworth, London, 1982.
- Dedecek, J.; Wichterlov´a, B. J. Phys. Chem. B, 1999, 103, 1462-1476.
- Dedecek, J.; Kauck´y, D.; Wichterlov´a, B.; Microporous Mesoporous Mater., 2000, 483, 35-36.
- Kauck´y, D.; Vondrov´a, A.; Dedecek, J.; Wichterlov´a, B. J Catal., 2000, 194, 318-329.
- Sobalik, Z.; Dedecek, J.; Kauccky, D.; Wichterlova, B., Drozdova, L.; Parins, R.; J. Catal, 2000, 194, 330-342.
- Beutel, T.; S´arK´any, J.; Yan, J.; Sachtler, W. M. J Phys Chem, 1996, 100, 845-851.
- Yashnik, S.; Ismagilov, Z.; Anufrienko, V. Catal. Today, 2005, 110, 310-322.
- Chupin, C.; Veen, A.C.; Konduru, M.; Despres J.; Mirodatos, C. J Catal, 2006, 241, 103-114.
- Hoefnagel, A.; Bekkum, H. Catal. Lett., 2003, 85,7-11.
- Kirumakki, S.; Nagaraju R.; Cari, N.; Narayanan, S. J. Catal., 2004, 221, 549-559.
- Gervasini, A. Appl. Catal. A, 1999, 180, 71-82.
- Niaei, A.; Salari, D.; Hosseini, S.A.; Khatamian, M.; Jodaei, A. Chinese J. Chem., 2009, 27, 484-488.