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Surface chemistry of silicon nitride powders: adsorption from non-aqueous solutions
YKI – Ytkemiska institutet.
1992 (English)In: Colloids and Surfaces, ISSN 0166-6622, E-ISSN 1873-4340, Vol. 69, 53-64 p.Article in journal (Refereed)
Abstract [en]

The adsorption behaviour in cyclohexane of different silicon nitride powders have been studied. Adsorption isotherms of organic probe molecules covering a wide spectra of Lewis acidity/basicity showed large variation in adsorption behaviour between the different probes. Mathematical analysis showed that the adsorption data could be described by a Langmuir-Freundlich type of isotherm. Using a previously presented model of the silicon nitride surface, it was possible to relate the variation of isoelectric point in water between the three powders to a difference in the relative site density of silanol and amino groups on the surface. It was found that the maximum concentration (M) of benzoic acid increased linearly while M of pyridine decreased with an increase in the relative amount of amino groups on the surface.

Place, publisher, year, edition, pages
1992. Vol. 69, 53-64 p.
Keyword [en]
Adsorption, cyclohexane, silicon nitride powders
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26393OAI: oai:DiVA.org:ri-26393DiVA: diva2:1053395
Note
A778Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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