a‐sulfo fatty acids and derivatives. Synthesis, properties and use

Stirton, A. J.

doi:10.1007/bf02637234

Cited by 42 publications

(20 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By absolute value, the slope coefficients in Eqs. (21) and (23) are close to the slope coefficients in the analogous dependences for the adsorption constants at the air/water interface; see Eqs. (12) and (13).…”

Section: Micellization Parameters and Numerical Resultsmentioning

confidence: 78%

“…Because the CMC values determined by surface-tension measurements are lower than those determined by conductivity, we conclude that the investigated ionic-surfactant samples contain nonionic admixtures. For this reason, physicochemical characteristics of SMEs, such as surface tension isotherms and critical micelle concentrations, published in the literature often differ, sometimes up to order of magnitude in the CMC values [3,[14][15][16][17][18][19][20][21]. The method developed in the present article allowed us to determine the surface tension isotherms and the CMCs of the pure sulfonated methyl esters.…”

Section: Discussionmentioning

confidence: 98%

“…Despite the wide usage of SMEs, their physicochemical characteristics, such as surface tension isotherms, and critical micelle concentration (CMC), published in the literature often differ, sometimes up to order of magnitude in the CMC values [3,[14][15][16][17][18][19][20][21]. The lack of clarity on the physicochemical properties of SME has been one of the limitations for increasing the scope of their applications.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sulfonated methyl esters of fatty acids in aqueous solutions: Interfacial and micellar properties

Danov

Stanimirova

Kralchevsky

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Micellization Parameters and Numerical Resultsmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sulfonated methyl esters of fatty acids in aqueous solutions: Interfacial and micellar properties

Danov

Stanimirova

Kralchevsky

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…Monosodium salts of a-sulfonated fatty acids [their chemistry has been reviewed by Stirton (1962)] are apparently good collectors for CaF 2 , while p-tolyl arsonic acid does not float fluorspar [Trahar (1972)]. …”

Section: A-sulfonated Fatty Acidsmentioning

confidence: 99%

Surface Chemistry of Froth Flotation

Leja¹

1981

263

147

View full text Add to dashboard Cite

“…Es posible encontrar en la literatura diferentes estudios sobre sulfonación de ésteres metílicos para las etapas posteriores de digestión y blanqueamiento del producto sulfonado (Fabry y Giesen, 1990;De Groot, 1991;Roberts et al, 1988Roberts et al, , 1995Roberts et al, , 2007Roberts et al, , 2008Yamada, 1996;US Patents 3,169,142;4,080,372;5,587,500), lo mismo sucede con la etapa de neutralización (Stirton, 1962(Stirton, , 1965Stein et al, 1975;De Groot, 1991;US Patents 5,391,783;5,391,786;6,657,071); sin embargo, se carece de una profundización en la primera etapa del proceso que ocurre en el sulfonador (contactor). Por esto, se considera de especial interés adelantar un estudio sobre las variables significativas del proceso que determina el grado de sulfonación efectuando ensayos a escala laboratorio.…”

unclassified

Estudio cinético de la sulfonación de ésteres metílicos derivados de la estearina de palma

Ortega

Aldana

Castellanos

2009

CTA

View full text Add to dashboard Cite

Los ésteres metílicos como alternativa oleoquímica permiten sintetizar compuestos para la fabricación de detergentes, polímeros, recubrimientos, cosméticos, pinturas y otras sustancias. Así, la transformación del aceite de palma se establece como una cadena productiva con múltiples aplicaciones industriales. Las propiedades biológicas del éster metílico sulfonado, derivado del aceite de palma, permiten desarrollar detergentes de baja toxicidad al medio ambiente, son una fuente renovable de materia prima, y con su desarrollo se explota este recurso nacional; se generan así conocimiento y fuentes adicionales de trabajo. La sulfonación de ésteres metílicos es una reacción altamente exotérmica en la que la velocidad de reacción determina la carga térmica que debe disipar el reactor, y por tanto es trascendental para el diseño del reactor de sulfonación y su modelamiento matemático. Mediante técnicas instrumentales se estableció una expresión cinética para la velocidad de reacción. Los ensayos realizados en el laboratorio permitieron la deducción de una cinética de segundo orden para el mecanismo de reacción propuesto; esta velocidad de reacción describe adecuadamente la sulfonación con SO3 de ésteres metílicos derivados de la estearina hidrogenada de palma. Se verificó la cinética de segundo orden de la reacción global del proceso de sulfonación de ésteres metílicos con SO3. Kinetic study of methyl esters sulfonation derived from palm stearin The methyl esters as an alternative to oil-chemical compounds, is an feedstock to manufacture of detergents, polymers, coatings, cosmetics, paints and other substances, establishing them the palm oil transformation like a productive chain with multiple applications at the industry level. Biological properties of biodiesel (methyl ester) sulfonated allow to develop low toxicity detergents to the environment, they are a renewable source of raw material, and with its development it is possible to take advantage of a national sources of knowledge and employment. Methyl esters sulfonation is a reaction highly exothermic, where reaction velocity determines the charge of heat, which should be dissipated by reactor. Therefore, it is important for sulfonation reactor design and its mathematical modelling. In this investigation, a kinetic study for methyl ester from palm oil stearin with sulfur trioxide SO3 sulfonation is presented, whereby with experimental techniques, it was possible to obtain a kinetic expression for reaction velocity. Tests in the laboratory allowed the deduction of a second-order kinetics for the reaction mechanism proposed, the reaction rate described adequately with SO3 sulfonation of methyl esters derived from hydrogenated palm stearin. It was observed second order kinetics of the reaction for the overall process of sulfonation with SO3 methyl esters.

show abstract

a‐sulfo fatty acids and derivatives. Synthesis, properties and use

Cited by 42 publications

References 29 publications

Sulfonated methyl esters of fatty acids in aqueous solutions: Interfacial and micellar properties

Sulfonated methyl esters of fatty acids in aqueous solutions: Interfacial and micellar properties

Surface Chemistry of Froth Flotation

Estudio cinético de la sulfonación de ésteres metílicos derivados de la estearina de palma

Contact Info

Product

Resources

About