| Interaction of water and ammonium in NaHY zeolite as detected by combined IR and gravimetric analysis (AGIR). | |
| | |
MedLine Citation:
|
PMID: 20617275 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
Qualitative as well as quantitative information is obtained simultaneously by combining thermogravimetry and operando IR spectroscopy with on line mass spectrometry. A microbalance has been adapted to an infrared reactor cell. The weight and IR spectra of a solid sample can be measured together in real time in operando conditions, in a gas flow at temperature between room temperature and 773 K. Molar absorbance coefficients epsilons can be obtained directly. The new technique was first applied to adsorbed water and ammonia on a solid acid catalyst, HY zeolite. Epsilon coefficients for water bands were measured. They are influence by the hydration level, and the nu+delta combination band is shown to be a much better option to determine the amount of adsorbed water on zeolites. Epsilon has also been measured for ammonium ions, and water was shown to greatly influence the spectral response of these ions. |
| | |
Authors:
|
Philippe Bazin; Aurélie Alenda; Frédéric Thibault-Starzyk |
Related Documents
:
|
21712575 - Pesticide risk mitigation by vegetated treatment systems: a meta-analysis. 15957035 - Replication of biological organizations through a supercritical fluid route. 14759215 - Affinity transformation from hydrophilicity to hydrophobicity of water molecules on the... 20853845 - Real-time investigations of pt(111) surface transformations in sulfuric acid solutions. 19604145 - L(9) orthogonal design assisted formulation and evaluation of chitosan-based buccoadhes... 7787825 - The prevalence of environmental mycobacteria in drinking water supply systems in olomou... |
Publication Detail:
|
Type: Journal Article Date: 2010-07-09 |
Journal Detail:
|
Title: Dalton transactions (Cambridge, England : 2003) Volume: 39 ISSN: 1477-9234 ISO Abbreviation: Dalton Trans Publication Date: 2010 Sep |
Date Detail:
|
Created Date: 2010-09-02 Completed Date: 2010-12-14 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101176026 Medline TA: Dalton Trans Country: England |
Other Details:
|
Languages: eng Pagination: 8432-6 Citation Subset: - |
Affiliation:
|
Laboratoire Catalyse et Spectrochimie, ENSICAEN-Université de Caen-CNRS, 6 Boulevard Maréchal Juin, 14050, Caen, France. philippe.bazin@ensicaen.fr |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Silyl and sigma-silane ruthenium complexes: chloride substituent effects on the catalysed silylation...
Next Document: A PCR reactor with an integrated alumina membrane for nucleic acid isolation.