Sulfur pigments synthesized from zeolite LTA under vacuum and in air. XRD and spectroscopic (UV-vis, FTIR, Raman, ESR, ESE) characterization
Authors:
- Stanisław K. Hoffmann,
- Janina Goslar,
- Stefan Lijewski,
- Iwona Olejniczak,
- Aldona Elżbieta Jankowska,
- Anna Werbińska,
- Stanisław Kowalak
Abstract
X-ray, UV-vis, FT-infrared, Raman, continuous wave, and pulsed ESR spectroscopy were applied to characterize pigments prepared at 500°C under vacuum or in air from mixtures of zeolite A (LTA) with sulfur (40 wt %) and anhydrous sodium sulfide (Na2/S = 0.1-0.4). The samples maintained the LTA structure. Sample color results from an S3- absorption band and the shoulder of a UV band. The fingerprint and asymmetric stretch region of the IR spectra show that the pigments synthesized in air have more disordered structures. The S2-/S3-ratio was estimated from Raman spectra. The ESR spectra of S 3- radicals show the existence of several phases visible as five different ESR components. Two components dominate: ideal [Na 4S3-]3+ clusters and clusters existing in a disordered environment. The samples synthesized in air show a substantial distortion of local structure. Synthesis in vacuum leads to products containing about 20% of the ordered crystalline phase. © 2010 American Chemical Society.
- Record ID
- UAMad1931f305d8481895adf1a38704fb60
- Author
- Journal series
- Industrial & Engineering Chemistry Research, ISSN 0888-5885
- Issue year
- 2010
- Vol
- 49
- Pages
- 8192-8199
- ASJC Classification
- ; ;
- DOI
- DOI:10.1021/ie100983m Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 0
- Score source
- journalList
- Publication indicators
- = 8; = 8; : 2010 = 1.164; : 2010 (2 years) = 2.072 - 2010 (5 years) =2.310
Share
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAMad1931f305d8481895adf1a38704fb60/
- URN
urn:amu-prod:UAMad1931f305d8481895adf1a38704fb60
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.