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dc.contributor.advisor Tomson, Mason B.
dc.creatorXiao, Jianjun (Alan)
dc.date.accessioned 2009-06-04T08:20:15Z
dc.date.available 2009-06-04T08:20:15Z
dc.date.issued 1997
dc.identifier.urihttps://hdl.handle.net/1911/17144
dc.description.abstract Phosphino-polycarboxylic acid (PPCA) and its modified types have the potential to be used as multifunctional inhibitors and they have advantages over unifunctional inhibitors in performance, thermal stability, dispersancy and environmental acceptability. The thermodynamic properties of PPCA have therefore been investigated by means of experiments at high ionic strength and high temperature. These properties include the equilibrium constant of proton association-dissociation $\rm (pK\sb{H}),$ the equilibrium constant of Ca-PPCA complexation $\rm (pK\sb{M})$ and the equilibrium constant of CaPPCA precipitation-dissolution $\rm (pK\sb{sp}).$ In this thesis, relationships between these constants and temperature, ionic strength, pH, and concentration are developed. Relevant to these thermodynamics, models on multi-equilibria of polyelectrolytes are discussed and a method of defining the solubility product of CaPPCA is developed. An improved method to measure PPCA in brines was also developed. Finally, application of these results to scale control in gas and oil production is discussed with specific field results.
dc.format.extent 146 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectPhysical chemistry
Environmental science
dc.title Solution chemistry of phosphino-polycarboxylic acid (PPCA) at high ionic strength and high temperature
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Chemistry
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Xiao, Jianjun (Alan). "Solution chemistry of phosphino-polycarboxylic acid (PPCA) at high ionic strength and high temperature." (1997) Master’s Thesis, Rice University. https://hdl.handle.net/1911/17144.


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