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A Spectroscopic Stu...
A Spectroscopic Study of Phthalate Adsorption on γ-Aluminum Oxide
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- Klug, Otto (författare)
- Luleå tekniska universitet,Evox RIFA AB, Gränna, Sweden
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- Forsling, Willis (författare)
- Luleå tekniska universitet,Industriell miljö- och processteknik
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(creator_code:org_t)
- 1999-08-14
- 1999
- Engelska.
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Ingår i: Langmuir. - : American Chemical Society (ACS). - 0743-7463 .- 1520-5827. ; 15:20, s. 6961-6968
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Surface complexation of phthalic acid/phthalate has been investigated on synthetically produced, nonaged γ-aluminum oxide by infrared and Raman spectroscopy. Effects of time, pH, and ionic strength have been studied both on the total adsorbed amount of phthalate and on the surface complexes. The spectroscopic results indicated the formation of two different types of complexes: outer sphere and inner sphere. The relative concentrations of these complexes were shown to vary considerably with pH but very little with increasing ionic strength, which equally reduced the amount of both types of complexes. Considering the electrostatic interaction between the surface and adsorbate, a complexation model was proposed that is in accordance with the spectroscopic results. Adsorption on the synthetic γ-alumina was compared to the adsorption on γ-aluminum oxide films produced by anodic oxidation, where the adsorbed amount was greatly reduced; however, both inner- and outer-sphere types of complexation have been observed.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Chemistry of Interfaces
- Gränsytors kemi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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