Solid-state ion exchange in H-SAPO-34: Electron spin resonance and electron spin echo modulation studies of Cu(II) location and adsorbate interaction

Journal Article · Thu Jun 25 00:00:00 EDT 1992 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100192a055· OSTI ID:457799

Zamadics, M; Chen, Xinhua; Kevan, L ^[1]

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1. Univ. of Houston, TX (United States)

ESR and ESEM are used in this paper to study Cu(II) ion location and interaction with water, alcohols, ammonia, and ethylene in the solid-state reactions of H-SAPO-34 with various copper compounds (CuO, CuCl{sub 2}, CuF{sub 2}). The Cu(II) ions migrate from the exterior to the interior of the molecular sieve similar to an aqueous ion exchange method. Two types of Cu(II) complexes form during the adsorption of methanol, but only one complex type forms with the rest of the adsorbates. Cu(II) interactions with other adsorbate molecules are also discussed. 20 refs., 3 figs., 2 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 457799
• Journal Information: Journal of Physical Chemistry, Vol. 96, Issue 13; Other Information: PBD: 25 Jun 1992
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
36 MATERIALS SCIENCE
66 PHYSICS
COPPER IONS
ELECTRON SPIN RESONANCE
SPIN ECHO
ZEOLITES
ION EXCHANGE
MOLECULAR SIEVES
CHEMICAL REACTIONS
ADSORBENTS