Effect of support acidity on phosphate-supported Pt deNOx catalysts

DOI

Bibliographic Information

Other Title
  • リン酸塩担持白金脱硝触媒における担体酸性度の効果

Description

Various phosphate-supported Pt catalysts (Pt/AlPO4, CePO4, Mg2P2O7, SnP2O7, TiP2O7, Zn3(PO4)2) were prepared and their NOx reduction activity with hydrogen (H2-SCR) was investigated from the viewpoint of solid acidity of supports. NH3-temperature programmed desorption spectra indicate that moderate solid acidity is favorable to obtain good NOx reduction activity. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTs) for the Pt/AlPO4 catalysts revealed that ammonia having good reducing ability against NOx adsorbed on Brønsted acid sites as an intermediate. The above phosphates with moderate solid acidity work as an ammonia reservoir.

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Details 詳細情報について

  • CRID
    1390282680595935488
  • NII Article ID
    130006978209
  • DOI
    10.14853/pcersj.2010s.0.1d22.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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