Vas beépítése szodalitok szerkezetébe és átalakításuk más, vasat tartalmazó zeolitféleségekké

Translated title of the contribution: Incorporation of iron into sodalite structures and their transformation to other iron containing zeolite species

P. Fejes, I. Kiricsi, Á. Kukovecz, Kovács Kristóf, K. Lázár, Marsi István, A. Oszkó, Bánvölgyi György

Research output: Contribution to journalArticle

Abstract

Applying the sol-gel technique the authors developed synthesis methods to prepare iron containing (even partly isomorphously substituted) sodalites and NaA (LTA) zeolites. The sodalites (with iron contents in the range 0-3 wt. %) served as model raw materials instead of crystalline alkali aluminium hydrosilicates from the alumina manufacturing industry (like the by-product DSP) to produce various commercially interesting zeolite species (e.g. NaA (LTA)) by making them amorphous using diluted acids followed by recrystallisation. The iron containing NaA (LTA) is a new material. Instrumental investigations (Mössbauer, XPS and UV-VIS spectroscopies) revealed that at least 60-62 % of the total iron content is situated in framework positions, in Th coordination, but, non-framework iron in Oh coordination is also significant. The incom-plete incorporation is mainly due to the "chemistry" of the sol-gel technique.

Original languageHungarian
Pages (from-to)107-115
Number of pages9
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume107
Issue number3
Publication statusPublished - Mar 2001

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Zeolites
Iron
Sol-gels
Aluminum Oxide
Alkalies
Ultraviolet spectroscopy
Aluminum
Byproducts
Raw materials
X ray photoelectron spectroscopy
Crystalline materials
Acids
Industry

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Vas beépítése szodalitok szerkezetébe és átalakításuk más, vasat tartalmazó zeolitféleségekké. / Fejes, P.; Kiricsi, I.; Kukovecz, Á.; Kristóf, Kovács; Lázár, K.; István, Marsi; Oszkó, A.; György, Bánvölgyi.

In: Magyar Kemiai Folyoirat, Kemiai Kozlemenyek, Vol. 107, No. 3, 03.2001, p. 107-115.

Research output: Contribution to journalArticle

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AU - Kukovecz, Á.

AU - Kristóf, Kovács

AU - Lázár, K.

AU - István, Marsi

AU - Oszkó, A.

AU - György, Bánvölgyi

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