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Surface chemistry o...
Surface chemistry of silicon nitride powders: adsorption from non-aqueous solutions
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- Bergström, L (författare)
- RISE,YKI – Ytkemiska institutet
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(creator_code:org_t)
- 1992
- 1992
- Engelska.
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Ingår i: Colloids and Surfaces. - 0166-6622 .- 1873-4340. ; 69, s. 53-64
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- 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.
Nyckelord
- Adsorption
- cyclohexane
- silicon nitride powders
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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