Banca de DEFESA: IARA MICHELLE SILVA CORREIA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : IARA MICHELLE SILVA CORREIA
DATE: 11/09/2020
TIME: 13:30
LOCAL: VIRTUAL
TITLE:

Adsorptive desulfurization of petroleum fractions in ZSM-35 modified with molybdenum.

KEY WORDS:

desulfurization, adsorption, ZSM-35, molybdenum. 

 

PAGES: 100
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Processos Industriais de Engenharia Química
SPECIALTY: Processos Inorgânicos
SUMMARY:

The search for cleaner technologies for the removal of sulfur compounds in fuels is a

 constant since that the commercial process of desulphurization currently used is 

characterized by the high consumption of hydrogen and severe operating conditions 

of temperature and pressure. In this work the use of zeolite ZSM-35 modified with 

molybdenum in different concentrations (2.5% to 10%) applied in an adsorptive 

desulphurization process at low temperatures and pressure was evaluated. 

The materials were prepared by wet impregnation and characterized by X-ray diffraction,

 scanning electron microscopy, thermal analysis and nitrogen adsorption.

 The adsorptive desulphurization was conducted in a batch system at temperatures 

ranging from 303 K to 323 K under agitation speed of 140 rpm using a synthetic

 gasoline containing heptane and thiophene. The sulfur contained in the samples

 was quantified according to ASTM D5443. The kinetics of adsorption was evaluated

 by the kinetic models of pseudo-first order, pseudo-second order, intraparticle diffusion 

and Elovich. The results showed that the adsorption capacity of the materials and 

the desulphurization yield were influenced by the temperature and the molybdenum

 concentration in the zeolitic structure, and the best process efficiency was obtained

 at a temperature of 313 K using ZSM-35 with 5% molybdenum.

BANKING MEMBERS:
Presidente - 349801 - CARLSON PEREIRA DE SOUZA
Interno - 2929066 - ANDRE LUIS LOPES MORIYAMA
Externa ao Programa - 1271737 - CAMILA PACELLY BRANDÃO DE ARAÚJO
Externa à Instituição - ANDARAIR GOMES DOS SANTOS - UFERSA
Externo à Instituição - FRANCISCO WENDELL BEZERRA LOPES - UnP
Externo à Instituição - MARCELO JOSE BARROS DE SOUZA - UFS