Open Science Research Excellence

Open Science Index

Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29381


Select areas to restrict search in scientific publication database:
9998596
Generation of Catalytic Films of Zeolite Y and ZSM-5 on FeCrAlloy Metal
Abstract:
This work details the generation of thin films of structured zeolite catalysts (ZSM–5 and Y) onto the surface of a metal substrate (FeCrAlloy) using in-situ hydrothermal synthesis. In addition, the zeolite Y is post-synthetically modified by acidified ammonium ion exchange to generate US-Y. Finally the catalytic activity of the structured ZSM-5 catalyst films (Si/Al = 11, thickness 146 0m) and structured US–Y catalyst film (Si/Al = 8, thickness 230m) were compared with the pelleted powder form of ZSM–5 and USY catalysts of similar Si/Al ratios. The structured catalyst films have been characterised using a range of techniques, including X-ray diffraction (XRD), Electron microscopy (SEM), Energy Dispersive X–ray analysis (EDX) and Thermogravimetric Analysis (TGA). The transition from oxide-onalloy wires to hydrothermally synthesised uniformly zeolite coated surfaces was followed using SEM and XRD. In addition, the robustness of the prepared coating was confirmed by subjecting these to thermal cycling (ambient to 550oC). The cracking of n–heptane over the pellets and structured catalysts for both ZSM–5 and Y zeolite showed very similar product selectivities for similar amounts of catalyst with an apparent activation energy of around 60 kJ mol-1. This paper demonstrates that structured catalysts can be manufactured with excellent zeolite adherence and when suitably activated/modified give comparable cracking results to the pelleted powder forms. These structured catalysts will improve temperature distribution in highly exothermic and endothermic catalysed processes.
Digital Object Identifier (DOI):

References:

[1] Jansen, J., et al., Zeolitic coatings and their potential use in catalysis. Microporous and Mesoporous Materials, 1998. 21(4): p. 213-226.
[2] Zamaro, J.M., M.A. Ulla, and E.E. Miró, ZSM-5 growth on a FeCrAl steel support. Coating characteristics upon the catalytic behavior in the NOxSCR. Microporous and Mesoporous Materials, 2008. 115(1): p. 113-122.
[3] Badini, C. and F. Laurella, Oxidation of FeCrAl alloy: influence of temperature and atmosphere on scale growth rate and mechanism. Surface and coatings technology, 2001. 135(2): p. 291-298.
[4] Samad, J.E., J.A. Nychka, and N.V. Semagina, Structured catalysts via multiple stage thermal oxidation synthesis of FeCrAl alloy sintered microfibers. Chemical Engineering Journal, 2011. 168(1): p. 470-476.
[5] Yuranov, I., A. Renken, and L. Kiwi-Minsker, Zeolite/sintered metal fibers composites as effective structured catalysts. Applied Catalysis A: General, 2005. 281(1): p. 55-60.
[6] Meille, V., Review on methods to deposit catalysts on structured surfaces. Applied Catalysis A: General, 2006. 315: p. 1-17.
[7] Munoz, R., et al., Zeolite Y coatings on Al-2024-T3 substrate by a threestep synthesis method. Microporous and Mesoporous Materials, 2005. 86(1): p. 243-248.
[8] Wang, Z., J. Hedlund, and J. Sterte, Synthesis of thin silicalite-1 films on steel supports using a seeding method. Microporous and Mesoporous Materials, 2002. 52(3): p. 191-197.
[9] Mintova, S., V. Valtchev, and L. Konstantinov, Adhesivity of molecular sieve films on metal substrates. Zeolites, 1996. 17(5): p. 462-465.
[10] Wu, X., et al., Influence of an aluminized intermediate layer on the adhesion of a γ-Al2O3 washcoat on FeCrAl. Surface and coatings technology, 2005. 190(2): p. 434-439.
[11] Valentini, M., et al., The deposition of γ-Al2 O3 layers on ceramic and metallic supports for the preparation of structured catalysts. Catalysis today, 2001. 69(1): p. 307-314.
[12] Mies, M., et al., Hydrothermal synthesis and characterization of ZSM-5 coatings on a molybdenum support and scale-up for application in micro reactors. Catalysis today, 2005. 110(1): p. 38-46.
[13] Alrubaye, R.T.A., B. Atilgan, R. J. Holmes, and A. A. Garforth, Growing Zeolite Y on FeCrAlloy Metal. World Academy of Science, Engineering and Technology, 2013(76): p. 889-893.
[14] Chou, Y.H., et al., Mesoporous ZSM-5 catalysts: Preparation, characterisation and catalytic properties. Part I: Comparison of different synthesis routes. Microporous and Mesoporous Materials, 2006. 89(1): p. 78-87.
[15] Vassilakis, J.G. and D.F. Best, Novel zeolite compositions derived from zeolite Y. US Patent 5,013,699, 1991 - 1991, Google Patents.16. Danilatos, G., Review and outline of environmental SEM at present. Journal of Microscopy, 2011. 162(3): p. 391-402.
[16] Kadiri, H.E., et al., Abnormal high growth rates of metastable aluminas on FeCrAl alloys. Oxidation of metals, 2005. 64(1): p. 63-97.
[17] Camra, J., et al., Role of Al segregation and high affinity to oxygen in formation of adhesive alumina layers on FeCr alloy support. Catalysis today, 2005. 105(3): p. 629-633.
[18] Richardson, J.T., Principles of catalyst development. 1989. p. 70 - 120: Springer.
[19] Kochubey, V., Effect of Ti, Hf and Zr additions and impurity elements on the oxidation limited lifetime of thick-and thin-walled FeCrAlYcomponents. 2005, PhD thesis, Ruhr-Universität Bochum, Universitätsbibliothek.
[20] Huntz, A., et al., Thermal expansion coefficient of alumina films developed by oxidation of a FeCrAl alloy determined by a deflection technique. Applied surface science, 2006. 252(22): p. 7781-7787.
[21] Herbelin, J.M. and M. Mantel, Effects of Al addition and minor elements on oxidation behaviour of FeCr alloys. Le Journal de Physique IV, 1995. 5(C7): p. 7-7.
[22] Bhatia, S., Zeolite catalysis: Principles and applications. 1990, CRC Press (Boca Raton, Fla.).
[23] Rebrov, E.V., et al., Hydrothermal Synthesis of Zeolitic Coatings for Applications in Micro-structured Reactors. Ordered Porous Solids: ecent Advances and Prospects, 2008: p. 311.
[24] Persson, A., et al., Synthesis of stable suspensions of discrete colloidal zeolite (Na, TPA) ZSM-5 crystals. Zeolites, 1995. 15(7): p. 611-619.
[25] Jacobs, P.A. and J.A. Martens, Introduction to acid catalysis with zeolites in hydrocarbon reactions. Studies in Surface Science and Catalysis, 1991. 58: p. 445-496.
Vol:13 No:03 2019Vol:13 No:02 2019Vol:13 No:01 2019
Vol:12 No:12 2018Vol:12 No:11 2018Vol:12 No:10 2018Vol:12 No:09 2018Vol:12 No:08 2018Vol:12 No:07 2018Vol:12 No:06 2018Vol:12 No:05 2018Vol:12 No:04 2018Vol:12 No:03 2018Vol:12 No:02 2018Vol:12 No:01 2018
Vol:11 No:12 2017Vol:11 No:11 2017Vol:11 No:10 2017Vol:11 No:09 2017Vol:11 No:08 2017Vol:11 No:07 2017Vol:11 No:06 2017Vol:11 No:05 2017Vol:11 No:04 2017Vol:11 No:03 2017Vol:11 No:02 2017Vol:11 No:01 2017
Vol:10 No:12 2016Vol:10 No:11 2016Vol:10 No:10 2016Vol:10 No:09 2016Vol:10 No:08 2016Vol:10 No:07 2016Vol:10 No:06 2016Vol:10 No:05 2016Vol:10 No:04 2016Vol:10 No:03 2016Vol:10 No:02 2016Vol:10 No:01 2016
Vol:9 No:12 2015Vol:9 No:11 2015Vol:9 No:10 2015Vol:9 No:09 2015Vol:9 No:08 2015Vol:9 No:07 2015Vol:9 No:06 2015Vol:9 No:05 2015Vol:9 No:04 2015Vol:9 No:03 2015Vol:9 No:02 2015Vol:9 No:01 2015
Vol:8 No:12 2014Vol:8 No:11 2014Vol:8 No:10 2014Vol:8 No:09 2014Vol:8 No:08 2014Vol:8 No:07 2014Vol:8 No:06 2014Vol:8 No:05 2014Vol:8 No:04 2014Vol:8 No:03 2014Vol:8 No:02 2014Vol:8 No:01 2014
Vol:7 No:12 2013Vol:7 No:11 2013Vol:7 No:10 2013Vol:7 No:09 2013Vol:7 No:08 2013Vol:7 No:07 2013Vol:7 No:06 2013Vol:7 No:05 2013Vol:7 No:04 2013Vol:7 No:03 2013Vol:7 No:02 2013Vol:7 No:01 2013
Vol:6 No:12 2012Vol:6 No:11 2012Vol:6 No:10 2012Vol:6 No:09 2012Vol:6 No:08 2012Vol:6 No:07 2012Vol:6 No:06 2012Vol:6 No:05 2012Vol:6 No:04 2012Vol:6 No:03 2012Vol:6 No:02 2012Vol:6 No:01 2012
Vol:5 No:12 2011Vol:5 No:11 2011Vol:5 No:10 2011Vol:5 No:09 2011Vol:5 No:08 2011Vol:5 No:07 2011Vol:5 No:06 2011Vol:5 No:05 2011Vol:5 No:04 2011Vol:5 No:03 2011Vol:5 No:02 2011Vol:5 No:01 2011
Vol:4 No:12 2010Vol:4 No:11 2010Vol:4 No:10 2010Vol:4 No:09 2010Vol:4 No:08 2010Vol:4 No:07 2010Vol:4 No:06 2010Vol:4 No:05 2010Vol:4 No:04 2010Vol:4 No:03 2010Vol:4 No:02 2010Vol:4 No:01 2010
Vol:3 No:12 2009Vol:3 No:11 2009Vol:3 No:10 2009Vol:3 No:09 2009Vol:3 No:08 2009Vol:3 No:07 2009Vol:3 No:06 2009Vol:3 No:05 2009Vol:3 No:04 2009Vol:3 No:03 2009Vol:3 No:02 2009Vol:3 No:01 2009
Vol:2 No:12 2008Vol:2 No:11 2008Vol:2 No:10 2008Vol:2 No:09 2008Vol:2 No:08 2008Vol:2 No:07 2008Vol:2 No:06 2008Vol:2 No:05 2008Vol:2 No:04 2008Vol:2 No:03 2008Vol:2 No:02 2008Vol:2 No:01 2008
Vol:1 No:12 2007Vol:1 No:11 2007Vol:1 No:10 2007Vol:1 No:09 2007Vol:1 No:08 2007Vol:1 No:07 2007Vol:1 No:06 2007Vol:1 No:05 2007Vol:1 No:04 2007Vol:1 No:03 2007Vol:1 No:02 2007Vol:1 No:01 2007