• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1996 Fiscal Year Final Research Report Summary

Study of the Metal Phosphate Gatalysts for Selective Oxidation of Lower Alkanes

Research Project

Project/Area Number 07650935
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 触媒・化学プロセス
Research InstitutionToyama University

Principal Investigator

MATSUURA Ikuya  Toyama University, Faculty of Science, Professor, 理学部, 教授 (20165757)

Co-Investigator(Kenkyū-buntansha) TAKAYASU Osamu  Toyama University, Faculty of Science, Professor, 理学部, 教授 (40019188)
Project Period (FY) 1995 – 1996
KeywordsMetal phospate / Vanadyl pyrophosphate / Propane / Butane / Acrylonitrilr / Maleic anhydride
Research Abstract

1. The synthesis of acrolein through propylene oxidation and acrylonitrile through ammoxidation are important from an industrial viewpoint. In resent years, efforts have been made to synthesize acrylonitrile using propane insted of propylene. We studied oxidation and ammoxidation of rich propane over orthophosphates of the tetragonal type M^<5+>OPO_4 catalysts. The selectivity of catalyst for oxivativedehydrogenation of propane to propylene decreases in the order of V > Mo > Nb > Ta. The catalytic activities of M^<5+>OPO_4 depends on the M^<5+>=0 strength in the crystal. From these results a surface reaction model is suggested which refers to the clevage (001) surface plane of N^<5+>OPO_4.
2. (VO)_2P_2O_7 is a unique catalyst possessing a surprisingly high selectivity for the oxidation of n-butane to maleic anhydride. We reports that (VO)_2P_2O_7 mixed with a divalent metal orthophosphate can be used to synthesize maleic anhydride from n-butane oxidation with high selectivity and activity. The catalyst of (VO)_2P_2O_7 mixed with M^<2+>_3 (PO_4)_2 (M^<2+>=Fe, Ni, Co, Zn) has extremly high activity for n-butane oxidation to maleic anhydride. The M^<2+>_3 (PO_4) _2 grains are easly covered by the (VO)_2P_2O_7. The (100) plane of (VO)_2P_2O_7 in mixed catalysts has a more regular configuration compared to the simple (VO)_2P_2O_7. This regularity of the (100) plane causes the high activity and selectivity for n-butane oxidation. The promotion effect of the metal phosphate for (VO)_2P_2O_7 is in the order of M^<2+>_3 (PO_4)_2 > M^<2+>_2P_2O_7 > M^<3+>PO_4. The different promotion effects come from the degree of surface regularity by intercaleted metal phosphates with different structure.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] I. Matsuura: "Oxidation and Ammoxidation of Propane over Tetragonal Type M^<5+>OPO_4" Studies in Surface Science and Catalysis. 82. 271-279 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I. Matsuura: "Promotion Effect of Metal Phosphates on the Selective Oxidation of Butane to Maleic Anhydride : Usuing Vanadyl Pyrpphosphate Catalyst" Science and Technology Catalysis 1994. 185-190 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I. Matsuura: "Preparation and Characterization of Vanadyl Hydrogen Phosphate Hydrates" Chemistry Letters. 769-770 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I. Kanesaka: "Polarized Raman Spectra and Intensity Analysis of Na_4P_2O_7・10H_2O and P-O Stretches (VO)_2P_2O_7" J. Raman Spectroscopy. 26. 997-1002 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I. Matsuura: "Promotion Effect of Niobium Phosphate for Vanadyl Pyrophosphate Catalyst on Selective Oxidation of Butane to Maleic Anhydride" Catalysis Today. 38. 133-138 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Ishimura: "Preparation of Maleic Anhyderide Synthesis Catalyst (VO)_2P_2O_7 and their catalytic properties" Shokubai. 38. 506-509 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I.Matsuura et al.: "Oxidation and Ammoxidation of Propane over Tetragonal Type M^<5+>OPO_4" Studies in Surface Science and Catalysis. 82. 271-279 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Matsuura et al.: "Promotion Effect of Metal Phosphates on the Selective Oxifdation of Butane to Maleic Anhydride ; Using Vanadyl Pyrophosphate Catalyst" Science and Technology in Catalysis 1994. 185-190 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Matsuura et al.: "Preparation and Characterization of Vanadyl Hydrogen Phosphate Hydrates VO (HPO_4) ・1.5H_2O" Chemistry letters. 769-770 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Kanesaka et al.: "Polarizing Raman Spectra and Intentity Analysis of Na_4P_2O_7・10H_2O and P-O Stretches in (VO)_2P_2O_7" J.Raman Spectroscopy. 26. 997-1002 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Matsuura et al.: "Promotion Effect of Niobium Phosphate for Vanadyl Pyrophosphate Catalyst on Selective Oxidation of Butane to Maleic Anhydride" Catalysis Today. 28. 133-138 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Ishimura et al.: "Preparation of Maleic Anhydride Synthesis Catalyst (VO)_2P_2O_7 and their Catalytic Properties" Shokubai. 38. 506-509 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] I.Matsuura: "Acrylonitrile Synthesis Catalysts fom Propane Ammoxidation" Shokuibai. 39. 39-44 (1997)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1999-03-09  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi