Glycerol acetylation with acetic acid over Purolite CT-275. Product yields and process kinetics

Banu, Ionuț; Bumbac, Gheorghe; Bomboş, Dorin; Velea, Sanda; Galan, Ana-Maria; Bozga, Grigore

doi:10.1016/j.renene.2019.10.060

Cited by 40 publications

(22 citation statements)

References 40 publications

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“…It is particularly useful to evaluate the influence of pore diffusion in catalytic reactions. For the first‐order reaction, when N W‐P is less than 0.6, the internal diffusion may be ignorable; while larger N W‐P implies the significant influence of diffusion 16,42,43 …”

Section: Resultsmentioning

confidence: 99%

The hydrotreatment of n‐C16 over Pt/HPMo/SBA‐15 and the investigation of diffusion effect using a novel W‐P criterion

Sun

et al. 2021

AIChE Journal

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A series of Pt/HPMo/SBA‐15 catalysts with the pore size as a single variable were prepared to elucidate the internal diffusion effect on the hydrotreatment of n‐C16. A novel model was developed to calculate the Weisz‐Prater number (NW‐P) because the traditional model relies on excessive empirical reference values and affects the accuracy remarkably. The utilization of the internal effectiveness factor, Thiele modulus, and the apparent activities over catalysts with different diffusion capacity gave rise to NW‐P with improved accuracy, which can also be extended to other heterogeneous catalytic systems with macromolecules as reactants. Combining the novel model with the diffusion–reaction kinetic method, a conclusion has been drawn that the formation of m‐i‐C16 is more susceptible to internal diffusion than the consumption of n‐C16. Besides, the pore size should be not less than 10 nm to avoid the step‐limitation of internal diffusion, in the premise of adequate acid sites.

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Section: Resultsmentioning

confidence: 99%

The hydrotreatment of n‐C16 over Pt/HPMo/SBA‐15 and the investigation of diffusion effect using a novel W‐P criterion

Sun

et al. 2021

AIChE Journal

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“…La modificación química de GT para producir mono, di, tri acetil gliceroles, se verifica por medio de la esterificación con ácido acético, utilizando resina de intercambio iónico como catalizador heterogéneo [13] [14] [15]. En el pasado, se usaba ácido sulfúrico concentrado para catalizar la reacción, sin embargo, por consideraciones de seguridad industrial este ácido ha quedado prácticamente abolido [16].…”

Section: Revisión De La Literaturaunclassified

Valoración De Acetinas Como Reemplazo Parcial De Aceite Nafténico en Compuestos De Caucho Sbr1502

Tobón

Carmona

2020

ingeniare

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En esta investigación, glicerina grado técnico proveniente de la industria del biodiesel se esterificó para obtener mono, di, tri acetil gliceroles. Se empleo ácido acético glacial y resina de intercambio iónico Amberlyst®15 como catalizador heterogéneo para llevar a cabo la reacción. Acetil gliceroles fueron probados para reemplazar parcialmente hasta 10 partes en peso de aceite nafténico en formulaciones de caucho SBR1502 reforzado con sílica precipitada. Se uso peróxido de dicumilo para curar los compuestos. Se realizaron ensayos de reometría a los compuestos antes de ser curados. La resistencia a la tracción, elongación a rotura y resistencia al desgarre fueron evaluados para los compuestos curados. Se determinó que la adición de 10 phr de acetil gliceroles afectó levemente el torque mínimo y la resistencia a la tracción.

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“…Uno de los procesos importantes de trasformación química de glicerina es la acetilación con anhídrido acético o AA para producir mezclas de mono, di, tri acetil gliceroles (MDTAG) [20][21] [22]. Mono acetil glicerol (MAG) y diacetil glicerol (DAG) y triacetil glicerol (TAG) se usan como aditivos oxigenantes para combustibles, precursores en síntesis de biopolímeros, plastificantes, alimentos y cosméticos [2][6][7] [23].…”

Section: Introductionunclassified

Synthesis of mono di tri acetyl glycerols from glycerin technical degree

Tobón

Carmona

2021

TECCIENCIA

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Mono, di, tri acetyl glycerols (MDTAG) were synthesized from technical grade glycerin , as an alternative for the use of glycerol generated by the biodiesel industry. The esterification, was done using molar ratio (acetic acid: glycerin 1:6), at laboratory scale, toluene was added as a dragging agent to periodically remove the water of the reaction. Ion exchange resin was used as a heterogeneous catalyst. MDTAG were characterized using infrared spectroscopy (FT-IR). The low temperature behavior was analyzed by means of differential scanning calorimetry (DSC). MDTAG obtained experimentally showed excellent performance at temperatures below 0 °C. This result makes MDTAG potentially considered as additives to improve the low-temperature fluidity of biolubricant bases (from modified vegetable oils).

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Glycerol acetylation with acetic acid over Purolite CT-275. Product yields and process kinetics

Cited by 40 publications

References 40 publications

The hydrotreatment of n‐C16 over Pt/HPMo/SBA‐15 and the investigation of diffusion effect using a novel W‐P criterion

The hydrotreatment of n‐C16 over Pt/HPMo/SBA‐15 and the investigation of diffusion effect using a novel W‐P criterion

Valoración De Acetinas Como Reemplazo Parcial De Aceite Nafténico en Compuestos De Caucho Sbr1502

Synthesis of mono di tri acetyl glycerols from glycerin technical degree

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