Kinetics of the acid-catalysed hydrolysis of dodecylsulphate and dodecyldiethoxysulphate surfactants in concentrated micellar solutions. Part 2.—Effects of added electrolytes on the hydrolysis of sodium dodecylsulphate and sodium dodecyldiethoxysulphate

Abstract

Kinetics of the Acid-catalysed Hydrolysis of Dodec ylsulpha te and D odec yldie t hox y sulpha te Sur fac t an t s in Concentrated Micellar Solutions Part 2.-Effects of Added Electrolytes on the Hydrolysis of Sodium Dodecylsulphate and Sodium Dodecyldiethoxysulphate

Making more with less: confinement effects for more sustainable chemical transformations

“…Similar competition can also be observed by the addition of unreactive salts, with these ions displacing OH − or H 3 O + ions adsorbed to the micelle. 140 Similar general trends can be observed for acid-catalyzed hydrolysis where rates tend to increase for anionic surfactants and decrease in the presence of unreactive cations. 140–142 Collectively, these outcomes emphasize the ability of micellar systems to achieve rate enhancements by increasing the association of substrates and catalysts but highlight the need for careful consideration of the co-location of these reacting species within the micellar pseudophase.…”

Hydrolytic Stability of Ethoxylated Sulfonates

“…The buffers (and approximate pH) used here included phthalate (4), phosphate (7), triethanol amine (8), HEPE·s (8), monoethanol amine (9), and bicarbonate (9)·. The buffers (and approximate pH) used here included phthalate (4), phosphate (7), triethanol amine (8), HEPE·s (8), monoethanol amine (9), and bicarbonate (9)·.…”

Hydrolytic Stability of Ethoxylated Sulfonates

“…Figure 12 shows halflives calculated using Equation ( 9), as in a model that accounts only ~or the H+ -catalyzed mechanism. Figure 12 shows halflives calculated using Equation ( 9), as in a model that accounts only ~or the H+ -catalyzed mechanism.…”