Impregnación del líquido iónico (bmim)bf4 sobre la zeolita zsm-5 y evaluación de su actividad en la desulfuración oxidativa de una mezcla modelo de aceite pirolítico de llantas usadas

Autores:

Navas Gonzalez, Diana Carolina
Ruiz Nieves, Martha Liliana

Tipo de recurso:

http://purl.org/coar/version/c_b1a7d7d4d402bcce

Fecha de publicación:

2016

Institución:

Universidad Industrial de Santander

Repositorio:

Repositorio UIS

Idioma:

spa

OAI Identifier:: oai:noesis.uis.edu.co:20.500.14071/34364

Acceso en línea:: https://noesis.uis.edu.co/handle/20.500.14071/34364
https://noesis.uis.edu.co

Palabra clave:: Líquido Iónico (Il)
Zeolita
Impregnación
Extracción Soxhlet
Desulfuración Oxidativa (Ods)
Benzotiazol (Bth)
Dibenzotiofeno (Dbt)
Cromatografía.
This paper presents the results of impregnation of ionic liquid (IL) [BMIM]BF4 to zeolite ZSM-5 in three mass rations IL/zeolite (0.1
0.5
1) and they evaluation of the activity in oxidative desulfurization
using hydrogen peroxide as oxidizing agent. The process of impregnation was carried out in three stages: zeolite degasification in inert atmosphere at 220°C for 24 h
ionic liquid impregnation using dichloroethane as solvent at 40°C for 8 hours and finally
excess of IL was removed by Soxhlet extraction with toluene at 140°C for 5 hours. The structural and physicochemical properties of materials were characterized by XRD
IR spectroscopy
surface area BET and TGA. Characterization results show that ionic liquid affixed satisfactorily to zeolite even after Soxhlet extraction process
without causing any changes in the structure of the solid. Seven systems of reaction (ZSM-5; ZSM-5/H2O2; IL; IL/H2O2; IL/ZSM-5/H2O2) were used for evaluation ODS.For that
a mixture model of oil pyrolytic with a concentration of sulphur of 2700 ppm was prepared by dissolving dibenzothiophene or benzothiazole in toluene. The reactions were done in a batch reactor. Reaction conditions: temperature
oxidant/oil volumen ratio
reaction time and stirred speed were 75°C
0.3 v/v
5 h and 500 rpm
respectively. Content of sulphur in the upper layer of the model oil phase was analyzed directly by GC-FID. Finally
the ODS evaluation results show that the sulfur removal is affected by the nature of the sulfur molecules (size and polarity).

Rights

License: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Impregnación del líquido iónico (bmim)bf4 sobre la zeolita zsm-5 y evaluación de su actividad en la desulfuración oxidativa de una mezcla modelo de aceite pirolítico de llantas usadas

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