Examination of the surface polarity of .chi.-type alumina using ET-30 solvatochromism

A study has been conducted to investigate the use of the empirical single-parameter solvatochromic polarity scale E{sub T}(30) for estimating the activity of alumina surfaces. The surface polarity of {chi}-type alumina was determined as a function of the thermal activation and water deactivation of...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Langmuir 1990-02, Vol.6 (2), p.414-419
Hauptverfasser:	Michels, James J, Dorsey, John G
Format:	Artikel
Sprache:	eng
Schlagworte:	360202 > Ceramics, Cermets, & Refractories-- Structure & Phase Studies ACTIVITY LEVELS ALUMINIUM COMPOUNDS CATALYSTS Chemistry DATA DATA ANALYSIS Exact sciences and technology EXPERIMENTAL DATA General and physical chemistry General, apparatus INFORMATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY MATERIALS SCIENCE MEASURING INSTRUMENTS MEASURING METHODS NUMERICAL DATA 400201 > Chemical & Physicochemical Properties SOLVENT PROPERTIES Surface physical chemistry SURFACE PROPERTIES
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A study has been conducted to investigate the use of the empirical single-parameter solvatochromic polarity scale E{sub T}(30) for estimating the activity of alumina surfaces. The surface polarity of {chi}-type alumina was determined as a function of the thermal activation and water deactivation of the material. Activation temperatures ranged from 100 to 600{degree}C, and deactivation was performed with 0-15% by weight water. The results of this work imply that a solvatochromic polarity scale could be a useful means of estimating the activity of metal oxide substances employed for large-scale separations and catalysis.
ISSN:	0743-7463 1520-5827
DOI:	10.1021/la00092a022