PittsburghV1, France, Analysis, bibRecord, 000580

Efficient Polymerization Inhibition Systems for Acrylic Acid Distillation: Vapor-Phase Inhibitors

Identifieur interne : 000580 ( France/Analysis ); précédent : 000579; suivant : 000581

Efficient Polymerization Inhibition Systems for Acrylic Acid Distillation: Vapor-Phase Inhibitors

Auteurs : Renaud Nicolay [États-Unis, France] ; Jaroslav Mosnacek [États-Unis, Slovaquie] ; Kishore K. Kar [États-Unis] ; Stanley O. Fruchey [États-Unis] ; Michael D. Cloeter [États-Unis] ; Richard S. Harner [États-Unis] ; Krzysztof Matyjaszewski [États-Unis]

Source :

Industrial & engineering chemistry research [ 0888-5885 ] ; 2012.

RBID : Pascal:12-0169382

Descripteurs français

Pascal (Inist)
- Polymérisation, Distillation.
Wicri :
- topic : Distillation.

English descriptors

KwdEn :
- Distillation, Polymerization.

Abstract

Nitroso compounds, such as 2-methyl-2-nitrosopropane, nitrosobenzene, and 4-nitrosophenol, were tested as volatile inhibitors for vapor-phase inhibition of acrylic acid polymerization during its reflux at 113 °C under reduced pressure. The experimental parameters were set to mimic the conditions employed for the industrial distillation of acrylic acid. Nitrosobenzene was found to be the most efficient vapor-phase inhibitor for the distillation of acrylic acid. The inhibition time was also found to be dependent on the pressure used for the experiments. Decreasing the pressure from 110 to 85 mbar resulted in an almost 2-fold increase in the inhibition time. The combination of nitrosobenzene with a liquid-phase inhibitor, namely, 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl, significantly improved the efficiency of vapor-phase inhibition by decreasing the consumption of nitrosobenzene in the liquid phase.

Affiliations:

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Pascal:12-0169382

Le document en format XML

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<front><div type="abstract" xml:lang="en">Nitroso compounds, such as 2-methyl-2-nitrosopropane, nitrosobenzene, and 4-nitrosophenol, were tested as volatile inhibitors for vapor-phase inhibition of acrylic acid polymerization during its reflux at 113 °C under reduced pressure. The experimental parameters were set to mimic the conditions employed for the industrial distillation of acrylic acid. Nitrosobenzene was found to be the most efficient vapor-phase inhibitor for the distillation of acrylic acid. The inhibition time was also found to be dependent on the pressure used for the experiments. Decreasing the pressure from 110 to 85 mbar resulted in an almost 2-fold increase in the inhibition time. The combination of nitrosobenzene with a liquid-phase inhibitor, namely, 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl, significantly improved the efficiency of vapor-phase inhibition by decreasing the consumption of nitrosobenzene in the liquid phase.</div>
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Efficient Polymerization Inhibition Systems for Acrylic Acid Distillation: Vapor-Phase Inhibitors

Efficient Polymerization Inhibition Systems for Acrylic Acid Distillation: Vapor-Phase Inhibitors

Source :

Descripteurs français

English descriptors

Abstract

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Le document en format XML

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