Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Soraya L. Alencar"'
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Akademický článek
Evaluation of the Synthesis of Zeolite SSZ-13 using Choline Chloride and Different Crystallization Seeds and its Application in the Thermocatalytic Degradation of Ultra-High Molecular Weight Polyethylene
Autor: Julyane R. S. Solano, Raul C. S. Nascimento, David C. M. Silva, Diogo P. S. Silva, Lenivaldo V. Sousa, Bruno J. B. Silva, Soraya L. Alencar, Maritza M. Urbina, Paulo H. L. Quintela, Antonio O. S. Silva
Publikováno v: Materials Research, Vol 24, Iss 5 (2021)
Abstract The synthesis of SSZ-13 was studied by evaluating the influence of two types of crystallization seeds with CHA structure (S1 seeds prepared in fluoride medium and S2 seeds by the conversion of zeolite Y), SiO2/Al2O3 (28, 40, 60 and 100) and
Externí odkaz: https://doaj.org/article/0a079c787df548fb88b17112a366f6e8
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2
Effect of coke deposition over microporous and hierarchical ZSM-23 zeolite
Autor: Bruno J. B. Silva, Ana C. S. Melo, Paulo H. L. Quintela, Lais R.A. Sarmento, Deidiane S. Silva, Soraya L. Alencar, Antonio O. S. Silva, Lenivaldo V. Sousa
Publikováno v: Journal of Thermal Analysis and Calorimetry. 147:3161-3170
The effects of deactivation by coke deposition after the n-heptane cracking reaction were evaluated on crystallinity, acidity and activation energies for the coke thermal oxidation process in microporous and hierarchical ZSM-23 zeolites. The fresh an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45ff1d2b10b221903f9dad669db6c3dc
https://doi.org/10.1007/s10973-021-10740-3
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3
Thermo-catalytic degradation of PE and UHMWPE over zeolites with different pore systems and textural properties
Autor: Diogo Pimentel De Sá Da Silva, Bruno J. B. Silva, Lenivaldo V. Sousa, Paulo H. L. Quintela, A. C. S. Melo, Soraya L. Alencar, Antonio O. S. Silva
Publikováno v: Cerâmica, Vol 66, Iss 380, Pp 379-385 (2020)
Cerâmica v.66 n.380 2020
Cerâmica (São Paulo. Online)
Universidade de São Paulo (USP)
instacron:USP
The thermo-catalytic degradation of polyethylene (PE) and ultra-high molecular weight polyethylene (UHMWPE) was studied in the presence of zeolites (ZSM-5, ZSM-22, and ferrierite) with different pore systems and textural properties. The zeolites were
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3012b077b096a1b2270f571b0b4e9d84
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132020000400379&tlng=en
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4
Preparation of ZSM-22 zeolite with hierarchical pore structure
Autor: Nehemias R. Alencar Júnior, Pedro A.M. Maciel, Bruno J. B. Silva, Simoni M.P. Meneghetti, Paulo H. L. Quintela, Lais R.A. Sarmento, J. R. Santos, Soraya L. Alencar, Antonio O. S. Silva, Lenivaldo V. Sousa
Publikováno v: Materials Letters. 218:119-122
ZSM-22 zeolite samples were synthesized with and without the use of trimethoxyphenylsilane in conjunction with nanometric silica beads, producing materials with intracrystalline micro-mesopore structures. Subsequently, the solids were desilicated by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51b062f6c65e8ed3c85cb137bdb661fb
https://doi.org/10.1016/j.matlet.2018.01.146
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5
Kinetic study of thermocatalytic degradation of UHMWPE over microporous and hierarchical ZSM-23 zeolite
Autor: Soraya L. Alencar, Antonio O. S. Silva, Bruno J. B. Silva, Paulo H. L. Quintela, Lais R.A. Sarmento, Lenivaldo V. Sousa
Publikováno v: Applied Catalysis B: Environmental. 267:118699
The catalytic degradation of ultra high molecular weight polyethylene was studied in the presence of microporous and hierarchical ZSM-23 zeolites by thermogravimetric analysis. The ZSM-23 was synthesized using different structure-directing agents and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::702ffa5ed97f9a83848ddc34b1cb574c
https://doi.org/10.1016/j.apcatb.2020.118699
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6
Cristalização da zeólita mordenita com adição de sementes em meio reacionais com diferentes razões SiO2/Al2O3
Autor: Soraya L. Alencar, Antonio O. S. Silva, Lenivaldo Valerio de Sousa Junior, Thayane Regine Dantas de Mendonça, Ramiro Batinga Santos, J. R. Santos, Pedro Soares, Bruno J. B. Silva, O. M. S. Cysneiros
Publikováno v: Scientia Plena. 12
A síntese das amostras de mordenita foram realizadas através do método hidrotérmico, utilizando dois tipos diferentes de sementes de cristalização (mordenita e ferrierita), onde foram explorados a variação de alguns parâmetros de síntese, c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59fd23ae2d67d6fdbe2f23d3f3b67548
https://doi.org/10.14808/sci.plena.2016.043101
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8
Cristalização da zeólita ZSM-5 através do método de conversão de gel seco
Autor: F. L. dos Santos, A.O.S. da Silva, B. J. B. da Silva, J. R. Santos, Soraya L. Alencar
Publikováno v: Anais do Congresso Brasileiro de Engenharia Química em Iniciação Científica - Cobeq IC 2015.
RESUMO – A zeolita ZSM-5 e utilizada como catalisador em reacoes nas areas petroquimica, petrolifera e quimica fina, destacando-se as reacoes de craqueamento, isomerizacao, alquilacao, aromatizacao de olefinas, entre outras. Neste trabalho e propos
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af4abe0c2eb385ec26f38e017aab68fd
https://doi.org/10.5151/chemeng-cobeqic2015-390-34003-261676
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9
Quantitative analysis of zeolite ferrierite, ZSM-5 and mordenite present in synthesized samples
Autor: Albanise E. Silva, Lenivaldo Valerio de Sousa Junior, R. B. Santos, Bruno J. B. Silva, P. P. M. Neto, Tiago Pereira Martins da Costa, Livia M. O. Ribeiro, Soraya L. Alencar, Antonio O. S. Silva
Publikováno v: Cerâmica, Volume: 61, Issue: 357, Pages: 14-22, Published: MAR 2015
Cerâmica, Vol 61, Iss 357, Pp 14-22 (2015)
Cerâmica v.61 n.357 2015
Cerâmica (São Paulo. Online)
Universidade de São Paulo (USP)
instacron:USP
Nos estudos de obtenção de materiais zeolíticos é comum a formação de misturas de fases cristalinas devido à estabilidade relativa destes materiais no meio reacional empregado na síntese. Desta forma, é extremamente importante quantificar as
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89e689c4f1193d13faf2d33e6ae39735
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132015000100004&lng=en&tlng=en
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