Introduction of transition-metal ions into cation positions in high-silica zeolites by solid-state reactions. III. The simultaneous introduction of multivalent ions in HZSM 5 seolite

Journal Article · Sun Feb 01 00:00:00 EST 1987 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:5886735

Kucherov, A V; Slinkin, A A

The possibility of simultaneously introducing ions of Cu(II), Cr(V), and V(IV) into cation positions in ZSM 5 zeolite by reactions in the solid state has been studied. It was shown that following calcination of HZSM 5 and CuCrO/sub 4/ in air a superposition of two EPR spectra was observed that are characteristic of isolated Cu(II) and Cr(V) ions, i.e., isolated ions of the two metals are statistically distributed in the cation positions of the zeolite. Upon successive interaction of the HZSM 5 with CrO/sub 3/ and then with CuO, a significant fraction of the Cr(V) ions originally occupying cation positions are replaced by Cu(II) ions. Upon successive interaction in air between HZSM 5 and V/sub 2/O/sub 5/ and CuO, no less than 90% of the V(IV) ions are replaced by Cu(II) ions in cation positions. Heating this sample at 400/sup 0/C in H/sub 2/ results in the reduction of the Cu(II) ions and their expulsion from cation positions, which remain unoccupied. Raising the temperature to 800/sup 0/C in H/sub 2/ results in the cation positions again being occupied by V(IV) ions.

• Research Organization: N. D. Zelinskii Institute of Organic Chemistry, Moscow, USSR
• OSTI ID: 5886735
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Vol. 27:4; Other Information: Translated from Kinet. Katal.; 27: No. 8, 909-913(Jul-Aug 1986)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
74 ATOMIC AND MOLECULAR PHYSICS
CHROMIUM COMPOUNDS
METALLURGICAL EFFECTS
COPPER COMPOUNDS
VANADIUM COMPOUNDS
ZEOLITES
CALCINATION
CATALYTIC EFFECTS
ELECTRON SPIN RESONANCE
HYPERFINE STRUCTURE
ION IMPLANTATION
AIR
CATALYSTS
CATIONS
CHROMIUM OXIDES
COPPER OXIDES
HYDROGEN
LINE BROADENING
TEMPERATURE EFFECTS
VANADIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
FLUIDS
GASES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
MAGNETIC RESONANCE
MATERIALS
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
RESONANCE
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory