Production of Cylohexane from Hydrogenation of Benzene using Microreactor Technology

Dada, Emmanuel A.; Achenie, Luke E.K.

doi:10.1016/b978-0-444-59507-2.50040-8

Cited by 7 publications

(5 citation statements)

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“…Specifically, 54% of what is produced is used in the production of adipic acid for nylon 6.6, 39% for caprolactam for nylon-6, and 7% for products such as solvents, insecticides, and softeners. The demand for nylon (and thus cyclohexane) in engineering thermoplastics in resins and films is growing at about 6% annually [ 83 ]. M .…”

Section: -Results and Discussionmentioning

confidence: 99%

Comparison of quantity, quality and antibacterial activity of essential oil Mentha longifolia (L.) L. under different traditional and modern extraction methods

Karimnejad,

Ghavam

2024

PLoS ONE

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Extraction is the first and most important step in obtaining the effective ingredients of medicinal plants. Mentha longifolia (L.) L. is of considerable economic importance as a natural raw material for the food and pharmaceutical industries. Since the effect of different extraction methods (traditional and modern methods) on the quantity, quality and antimicrobial activity of the essential oil of this plant has not been done simultaneously; the present study was designed for the first time with the aim of identifying the best extraction method in terms of these features. For this purpose, extracting the essential oil of M. longifolia with the methods of hydrodistillation with Clevenger device (HDC), steam distillation with Kaiser device (SDK), simultaneous distillation with a solvent (SDE), hydrodistillation with microwave device (HDM), pretreatment of ultrasonic waves and Clevenger (U+HDC) and supercritical fluid (SF) were performed. Chemical compounds were identified by gas chromatography coupled with mass spectrometer (GC-MS). Antimicrobial activity of essential oils against various clinical microbial strains was evaluated by agar diffusion method and determination of the minimum inhibitory concentration and minimum bactericidal concentration (MIC and MBC). The results showed that the highest and lowest yields of M. longifolia leaf essential oil belonged to HDC (1.6083%) and HDM (0.3416%). The highest number of compounds belonged to SDK essential oil and was equal to 72 compounds (with a relative percentage of 87.13%) and the lowest number of compounds was related to the SF essential oil sample (7 compounds with a relative percentage of 100%). Piperitenone (25.2–41.38%), piperitenone oxide (22.02–0%), pulegone (10.81–0%) and 1,8-cineole (5–35.0%) are the dominant and main components of M. longifolia essential oil were subjected to different extraction methods. Antimicrobial activity results showed that the lowest MIC value belonged to essential oils extracted by HDM, SDK, SDE and U+HDC methods with a value of 1000 μg/mL was observed against Gram-negative bacteria Shigella dysenteriae, which was 5 times weaker than rifampin and 7 times weaker than gentamicin. Therefore, it can be concluded that in terms of efficiency of the HDC method, in terms of the percentage of compounds of the HDM method, and in terms of microbial activity, the SDK, HDM and U+HDC methods performed better.

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Section: -Results and Discussionmentioning

confidence: 99%

Comparison of quantity, quality and antibacterial activity of essential oil Mentha longifolia (L.) L. under different traditional and modern extraction methods

Karimnejad,

Ghavam

2024

PLoS ONE

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“…El conjunto de componentes que comprende el simulador COCO se puede usar para simular numerosos procesos industriales, como el proceso de obtención de Ciclohexano. El Ciclohexano de fórmula C6H12 es un compuesto nafténico, cristalino de alta pureza, usado como precursor para la producción de ácido adípico y caprolactama, compuestos para la producción del Nylon 6 y Nylon 6,6 respectivamente, unas de las fibras que tienen gran presencia y auge en la industria química (Tabla 1) [6], [7]. El ciclohexano tiene su consumo principal en fibras, resinas y películas de Nylon, por esto está vinculado a la industria automotriz, de materiales y textil.…”

Section: Cortez Y Colaboradoresunclassified

“…El método seleccionado para el desarrollo del diseño es la hidrogenación del benceno en fase vapor con presencia de catalizador. Es una reacción altamente exotérmica y entre los catalizadores que se pueden usar se encuentra el níquel, cobalto, paladio, entre otros [1], [6]. Con este método se tienen mayores conversiones que por la separación de nafta (mayores al 99.9%), además este último, según García y Tabe-Mohammadi es una opción compleja y antieconómica por la presencia de varios hidrocarburos en ebullición en el mismo intervalo de puntos de ebullición y además recuperaciones de solo el 85% [12].…”

Section: Materiales Y Métodosunclassified

Uso de simulador “COCO” para el diseño de plantas químicas. Caso de estudio: Planta de producción de Ciclohexano

2022

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Se evaluó el uso del simulador de procesos COCO en la producción de ciclohexano a partir de la hidrogenación catalítica del benceno determinando las ventajas y desventajas del uso de software libre frente a un simulador comercial. Con el uso de esta herramienta se diseñaron los equipos, el esquema general del proceso industrial, y se compararon los resultados de pureza con los resultados obtenidos por medio del software comercial ASPEN HYSYS. Se realizó el diseño partiendo de flujos de alimentación, temperaturas, presiones de operación y diagrama de flujo reportados en la literatura. Los resultados indicaron que el simulador COCO es adecuado y ventajoso para hacer simulaciones de este tipo de procesos a nivel académico al arrojar errores menores al 1% y una capacidad anual de la planta mayor a la prevista.

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“…With the complete hydrogenation of benzene, cyclohexane is obtained, which is the main raw material for the production of polyamide fibers [2].…”

Section: Introductionmentioning

confidence: 99%

Study of the Liquid-Phase Hydrogenation of Benzene in the Presence of Metal-Polymer Complexes Based on Polyvinylpyridines

Suleymanova,

Zeynalov,

Qulubayova

et al. 2023

AChJ

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The liquid-phase hydrogenation of benzene on metal-polymer complexes, which were prepared on vinylpyridine polymers containing functional groups and salts of transition metals such as nickel, palladium, and platinum, was studied. Poly-4-vinylpyridine and poly-2-methyl-5-vinylpyridine were used as vinylpyridine polymers. Hydrogenation was carried at a temperature of 20-600 C. The study additionally focussed on the influence of the nature of the medium on the benzene hydrogenation process on poly-4-vinylpyridines. It has been established that in the presence of a platinum-poly-4-vinylpyridine complex, the reaction of liquid-phase hydrogenation of benzene, not only the product of complete hydrogenation, but also products of incomplete hydrogenation, cyclohexene, are formed. It was also found that the nature of the medium affects the yield of cyclohexane and cyclohexene selectively and effectively

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Production of Cylohexane from Hydrogenation of Benzene using Microreactor Technology

Cited by 7 publications

References 1 publication

Comparison of quantity, quality and antibacterial activity of essential oil Mentha longifolia (L.) L. under different traditional and modern extraction methods

Comparison of quantity, quality and antibacterial activity of essential oil Mentha longifolia (L.) L. under different traditional and modern extraction methods

Uso de simulador “COCO” para el diseño de plantas químicas. Caso de estudio: Planta de producción de Ciclohexano

Study of the Liquid-Phase Hydrogenation of Benzene in the Presence of Metal-Polymer Complexes Based on Polyvinylpyridines

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