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dc.contributor.author
Imbachí Gamba, Carlos Fernando  
dc.contributor.author
Villa, A.L.  
dc.date.available
2022-09-22T13:17:27Z  
dc.date.issued
2021-06  
dc.identifier.citation
Imbachí Gamba, Carlos Fernando; Villa, A.L.; Statistical analysis of the influence of synthesis conditions on the properties of hierarchical zeolite Y; Elsevier; Materials Today Chemistry; 20; 6-2021; 1-12  
dc.identifier.issn
2468-5194  
dc.identifier.uri
http://hdl.handle.net/11336/169940  
dc.description.abstract
Commercial zeolite USY (CBV500, Si/Al = 2.6) was dealuminated with oxalic acid, desilicated with ammonium hydroxide assisted by cetyltrimethylammonium bromide, and acid washed with lactic acid for obtaining hierarchical zeolite Y. The samples were characterized by X-ray diffraction, N2-physisorption, temperature programmed desorption of NH3, transmission electronic microscopy and diffuse reflectance infrared Fourier transform spectroscopy Ppyridine adsorption. A central composite experimental design was used for obtaining the influence of the concentration of the three solutions used in each step of the synthesis, on the relative crystallinity (%RC), mesopore volume (Vmeso), and total acidity of the synthesized materials. All the materials conserved the %RC and total acidity between 51-89% and 51–80%, respectively; modified materials showed an increase of up to 300 m2/g of external surface area and 0.17 cm3/g of the Vmeso with respect to the CBV500 sample. The statistical analysis showed that all the properties are influenced by oxalic acid concentration, whereas ammonium hydroxide concentration affects Vmeso, and lactic acid concentration affects %RC and total acidity in the modified samples. According to the optimization of the process, the material synthesized and labeled as MZ-OP, showed a %RC = 82%, Vmeso = 0.21 cm3/g, and total acidity of 1.430 mmol/g. The catalytic cracking of n-dodecane was tested over CBV500, MZ-OP, and MZ-10-100-500 and the obtained conversion at 300 min was 65%, 95% and 82%, respectively. Deactivation rate of the modified samples was significantly lower than the values obtained with CBV500, showing that the modified samples were more stable under tested reaction conditions.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ACID WASHING  
dc.subject
CRACKING OF N-DODECANE  
dc.subject
CTAB  
dc.subject
EXPERIMENTAL DESIGN  
dc.subject
MESOPOROUS SYSTEM  
dc.subject
OXALIC ACID  
dc.subject.classification
Otras Ingeniería Química  
dc.subject.classification
Ingeniería Química  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Statistical analysis of the influence of synthesis conditions on the properties of hierarchical zeolite Y  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-09-05T15:14:45Z  
dc.journal.volume
20  
dc.journal.pagination
1-12  
dc.journal.pais
Reino Unido  
dc.description.fil
Fil: Imbachí Gamba, Carlos Fernando. Universidad de Antioquia; Colombia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina  
dc.description.fil
Fil: Villa, A.L.. Universidad de Antioquia; Colombia  
dc.journal.title
Materials Today Chemistry  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2468519421000227  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.mtchem.2021.100442