On the preparation and properties of CuZSM-5 catalysts for NO decomposition

J. Valyon, W. Keith Hall

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Equilibrium exchange isotherms were determined for the exchange of Cu2+ with NaZSM-5 at varying Cu(Ac)2 concentrations in solutions of constant volume and zeolite weight. At low Cu2+ levels the solid scavenged all the copper ions. When copper could be detected in the equilibrated solutions, "overexchange" was observed. The extent of "overexchange" was higher at pH ≈ 6 than at pH ≈ 4. These results were analyzed in relation to catalytic activity.

Original languageEnglish
Pages (from-to)109-119
Number of pages11
JournalCatalysis Letters
Volume19
Issue number2-3
DOIs
Publication statusPublished - Jun 1993

Fingerprint

Copper
Ion exchange
Decomposition
decomposition
Zeolites
catalysts
copper
preparation
Catalysts
Isotherms
catalytic activity
Catalyst activity
isotherms
Ions
ions

Keywords

  • Cu/Na exchange equilibria
  • effects of pH on catalytic properties
  • NO decomposition-sites
  • overexchange in CuZSM-5

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

On the preparation and properties of CuZSM-5 catalysts for NO decomposition. / Valyon, J.; Keith Hall, W.

In: Catalysis Letters, Vol. 19, No. 2-3, 06.1993, p. 109-119.

Research output: Contribution to journalArticle

@article{c5fcb764cb3c4f498f85e4115acff763,
title = "On the preparation and properties of CuZSM-5 catalysts for NO decomposition",
abstract = "Equilibrium exchange isotherms were determined for the exchange of Cu2+ with NaZSM-5 at varying Cu(Ac)2 concentrations in solutions of constant volume and zeolite weight. At low Cu2+ levels the solid scavenged all the copper ions. When copper could be detected in the equilibrated solutions, {"}overexchange{"} was observed. The extent of {"}overexchange{"} was higher at pH ≈ 6 than at pH ≈ 4. These results were analyzed in relation to catalytic activity.",
keywords = "Cu/Na exchange equilibria, effects of pH on catalytic properties, NO decomposition-sites, overexchange in CuZSM-5",
author = "J. Valyon and {Keith Hall}, W.",
year = "1993",
month = "6",
doi = "10.1007/BF00771745",
language = "English",
volume = "19",
pages = "109--119",
journal = "Catalysis Letters",
issn = "1011-372X",
publisher = "Springer Netherlands",
number = "2-3",

}

TY - JOUR

T1 - On the preparation and properties of CuZSM-5 catalysts for NO decomposition

AU - Valyon, J.

AU - Keith Hall, W.

PY - 1993/6

Y1 - 1993/6

N2 - Equilibrium exchange isotherms were determined for the exchange of Cu2+ with NaZSM-5 at varying Cu(Ac)2 concentrations in solutions of constant volume and zeolite weight. At low Cu2+ levels the solid scavenged all the copper ions. When copper could be detected in the equilibrated solutions, "overexchange" was observed. The extent of "overexchange" was higher at pH ≈ 6 than at pH ≈ 4. These results were analyzed in relation to catalytic activity.

AB - Equilibrium exchange isotherms were determined for the exchange of Cu2+ with NaZSM-5 at varying Cu(Ac)2 concentrations in solutions of constant volume and zeolite weight. At low Cu2+ levels the solid scavenged all the copper ions. When copper could be detected in the equilibrated solutions, "overexchange" was observed. The extent of "overexchange" was higher at pH ≈ 6 than at pH ≈ 4. These results were analyzed in relation to catalytic activity.

KW - Cu/Na exchange equilibria

KW - effects of pH on catalytic properties

KW - NO decomposition-sites

KW - overexchange in CuZSM-5

UR - http://www.scopus.com/inward/record.url?scp=0000077222&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000077222&partnerID=8YFLogxK

U2 - 10.1007/BF00771745

DO - 10.1007/BF00771745

M3 - Article

VL - 19

SP - 109

EP - 119

JO - Catalysis Letters

JF - Catalysis Letters

SN - 1011-372X

IS - 2-3

ER -