Synthesis of mesoporous complex framework zirconium phosphates via organic-inorganic nanocomposites: Genesis of structure, adsorption and catalytic properties

Yulia V. Frolova, Vladislav A. Sadykov, S. N. Pavlova, S. A. Veniaminov, R. V. Bunina, E. B. Burgina, V. N. Kolomiichuk, T. V. Larina, N. V. Mezentseva, M. A. Fedotov, A. M. Volodin, E. A. Paukshtis, V. B. Fenelonov, R. Roy, D. Agrawal

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

This work presents the first results of synthesis of framework binary phosphates of zirconium and transition metal cations (Co, Cu, Ce) via. nanocomposites of starting inorganic salts with citric acid and studies of their structure genesis. Nanoparticles of layered Zr phosphates with typical sizes in the range of 18-24 Å are formed at the mixing stage. Less basic Cu and Co cations are mainly octa-coordinated with both phosphate groups of those nanoparticles and citric acid molecules. At subsequent thermal treatment, Cu and Co cations are incorporated within Zr phosphate nanoparticles acquiring a low coordination approaching a tetrahedral one while rearranging the nuclei structure into that of a framework type. Removal of citric acid by heating under air at 200-300°C preserves the size of nanoparticles while their ordered stacking forms mesoporous structure with a narrow pore size distribution ∼ 50 Å and specific surface area up to 200 m2/g after calcination at 600°C. The binary phosphates promoted by a small amount of Pt were found to be effective catalysts of NOx selective reduction by decane in the oxygen excess not subjected to coking with a high and stable performance at high space velocities in the presence of steam.

Original languageEnglish (US)
Pages (from-to)215-220
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume788
DOIs
StatePublished - Jan 1 2003
EventContinuous Nanophase and Nanostructured Materials - Boston, MA., United States
Duration: Dec 1 2003Dec 5 2003

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Synthesis of mesoporous complex framework zirconium phosphates via organic-inorganic nanocomposites: Genesis of structure, adsorption and catalytic properties'. Together they form a unique fingerprint.

  • Cite this

    Frolova, Y. V., Sadykov, V. A., Pavlova, S. N., Veniaminov, S. A., Bunina, R. V., Burgina, E. B., Kolomiichuk, V. N., Larina, T. V., Mezentseva, N. V., Fedotov, M. A., Volodin, A. M., Paukshtis, E. A., Fenelonov, V. B., Roy, R., & Agrawal, D. (2003). Synthesis of mesoporous complex framework zirconium phosphates via organic-inorganic nanocomposites: Genesis of structure, adsorption and catalytic properties. Materials Research Society Symposium - Proceedings, 788, 215-220. https://doi.org/10.1557/proc-788-l11.54