Surface chemical heterogeneity of oxidized carbon particles

C. A. Leon y Leon, V. Calemma, L. R. Radovic

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


The effects of pH, or surface chemistry and of porosity on the heterogeneity of immersed Saran carbons was investigated by film flotation. Even in the presence of methanol, higher pH values were found to enhance the surface hydrophilicity of carbons owing to the dissociation of oxygen functional groups. For carbons with similar oxygen contents, higher CO/CO2 evolution ratios (i.e., lower acidities) led to diminished pH effects, and to a more hydrophilic response at low pH values. Porosity only appears to affect the rate at which equilibrium flotation is attained.

Original languageEnglish (US)
Pages (from-to)30-31
Number of pages2
JournalExtended Abstracts and Program - Biennial Conference on Carbon
StatePublished - Jan 1 1991
Event20th Biennial Conference on Carbon - Santa Barbara, CA, USA
Duration: Jun 23 1991Jun 28 1991

All Science Journal Classification (ASJC) codes

  • General Engineering


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