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1887
Volume 61, Issue 1
  • ISSN: 2056-5135

Abstract

As part of a process loop to make acrylic acid from propane, catalysts for two reactions have been investigated. Mo/Bi based mixed metal oxides for selective oxidation of propylene in a propane feed have been prepared by a sol-gel method which increased activity over the standard catalyst. Modifications of the molecular formula led to an increase in selectivity towards acrolein whilst maintaining the improved conversion. X-ray diffraction (XRD) analysis showed the sol-gel method helped incorporate the various mixed metal oxides and prevented segregation during reaction conditions. A Pd-loaded 4A zeolite membrane catalyst was developed on the surface of 1 mm beads γ-AlO support. The membrane was employed in the selective oxidation of CO in a propane-rich mixture. The zeolite coating was developed by using a new modification of the hydrothermal synthesis (dilution method). Catalytic test results confirmed that the selective oxidation of CO in the presence of propane is possible by using a 4A zeolite membrane coated on a Pd based catalyst. Temperature and time during zeolite preparation are key parameters in the stability and reproducibility of the zeolite membrane. The seeding method improves the growth of the zeolite on the catalyst surface and does not affect the stability and reproducibility of catalyst. By using this catalyst it is possible to get a temperature window for the selective oxidation of CO (65°C).

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/content/journals/10.1595/205651317X693516
2017-01-01
2024-07-22
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References

  1. CARENA – Project:http://www.carenafp7.eu/index.php/Project/Project.html (Accessed on 14th June 2016)
  2. Goodman K. E., Hayes J. W., Malde C. N., and Petch M. I Johnson Matthey Plc, ‘Method of Coating Materials with a Zeolite-Type Substance’, European Patent 0,878,233; 1998 [Google Scholar]
  3. Collier P. J., and Golunski S. E. Johnson Matthey Plc, ‘Selective Oxidation’, European Patent 1,434,833; 2007 [Google Scholar]
  4. Collier P., Golunski S., Malde C., Breen J., and Burch R. J. Am. Chem. Soc., 2003, 125, (41), 12414 LINK http://dx.doi.org/10.1021/ja037136s [Google Scholar]
  5. Hecquet G., Schirmann J.-P., Simon M., Descat G., and Etienne E. Atochem Elf SA, ‘Process for the Manufacture of Acrolein from Propylene by a Redox Reaction and Use of a Solid Mixed Oxide Composition as Redox System in the Said Reaction’, US Appl. 6,080,893; 2000 [Google Scholar]
  6. Xu X., Yang W., Liu J., and Lin L. Micropor. Mesopor. Mater., 2001, 43, (3), 299 LINK http://dx.doi.org/10.1016/S1387-1811(01)00209-8 [Google Scholar]
  7. Liu Y., Yang Z., Yu C., Gu X., and Xu N. Micropor. Mesopor. Mater., 2011, 143, (2–3), 348 LINK http://dx.doi.org/10.1016/j.micromeso.2011.03.016 [Google Scholar]
  8. Zhong Y. J., Xu X. H., Chen L., Luo M. F., Xie Y. L., Ma C. A., Zhu W. D., ‘Reactant-Selective Oxidation Over Composite Zeolite-4A Coated Pt/γ-Al2O3 Particles’, in “From Zeolites to Porous MOF Materials – the 40th Anniversary of International Zeolite Conference”, eds. Xu R., Chen J., Gao Z., and Yan W. Proceedings of the 15th International Zeolite Conference, Beijing, China, 12th–17th August, 2007, Studies in Surface Science and Catalysis, vol. 170A, Elsevier Science, Amsterdam, The Netherlands, 2007, p. 1313 [Google Scholar]
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  • Article Type: Research Article
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