Abstract
As part of an investigation into the mode of action of dropwise condensation promoters, an investigation has been made of the kinetics of the adsorption of OS dioctadecyl xanthate on to fused copper powder from solution in carbon tetrachloride. The procedure was to shake the reactants in a stoppered flask and follow the rate of xanthate removal by ultra-violet spectrophotometry on the solution using the > C=S band. The reaction appeared to be first order with respect to xanthate concentration, and proceeded until the solution was completely denuded. The reaction velocity constant was independent of substrate coverage. Assuming there to be close packing of the xanthate, and the roughness factor of the powder to be unity, in some instances almost 200 equivalent monolayers were adsorbed.
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CALDERBANK, P., HOLROYD, J., POLL, A. et al. Rupture of Xanthate Molecules at Copper Surfaces. Nature 198, 83–84 (1963). https://doi.org/10.1038/198083a0
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DOI: https://doi.org/10.1038/198083a0
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