Results 51 to 60 of about 2,438 (214)

Study of the Thermal Stability of Faujasite Zeolite Synthesized from Kaolin Waste from the Amazon [PDF]

Materials Research, 2020
The waste from the processing of kaolin in the Amazonian region of Brazil was subjected to a calcination process at 700°C for 2 h to obtain metakaolin, which, together with sodium hydroxide and sodium silicate, formed the reaction mixture.
Paulo Renan dos Santos de Castro, Ana Áurea Barreto Maia, Rômulo Simões Angélica   +2 more
doaj   +1 more source

Fluorescence Behavior of Water‐Soluble Porphyrins Immobilized on LTA Zeolite and Its Chlorogenic Acid Polyphenol Sensing in Coffee Wastewater

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
During coffee bean and cherry washing, contaminants are released into water, making this process a major source of water pollution. Chlorogenic acid can be efficiently detected using hybrid zeolite–porphyrin materials by measuring fluorescence quenching, achieving detection limits lower than current regulatory thresholds.
João Otávio Donizette Malafatti, Gabriele Magna, Francesco Pizzoli, Fabrizio Caroleo, Cadia D'Ottavi, Williane da Silva Freitas, Ailton José Moreira, Elaine Cristina Paris, Luiz Henrique Capparelli Mattoso, Corrado Di Natale, Roberto Paolesse   +10 more
wiley   +1 more source

E.s.c.a. study of monomodal metal phases in a FAUJASITE matrix [PDF]

, 1982
A series of faujasite supported catalysts with monomodal dispersed phases of nickel, palladium, and platinum, exhibiting narrow particle size distributions, are chracterized by X.p.s. (X-ray photoelectron spectroscopy)
Schulz-Ekloff, G., Grunze, M., Wright, D.   +2 more
core   +1 more source

Contrast Agents for Enhanced Bioimaging: A Comprehensive Review

ChemBioChem, Volume 27, Issue 13, 14 July 2026.
Contrast agents, especially those that are nanoparticle‐based, are revolutionizing bioimaging by enabling highly sensitive, specific, and early‐stage diagnosis of diseases like cancer, using clinical imaging modalities such as CT, MRI, PET, and SPECT.
Paulo Sérgio Taube, Donald Fernandes, Arthur Abinader Vasconcelos, Hugo de Campos Braga, Alan Kelbis Oliveira Lima, José Arnaldo Santana Costa, Karla Furtado Andriani, Ester da Cunha Meira Santos, Antonio Jorge Silva Araújo Junior, Hauster Maximiler Campos de Paula, Wallace Júnio Reis, Kashif Gul, Nida Wahab, Luis Carlos Resio, Elisa Kawana Leal dos Santos, Márcio Peres de Araujo, Matheus Allen P. da Silva, Juliana Paula da Silva   +17 more
wiley   +1 more source

Analysis of faujasite [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
(1849). Analysis of faujasite. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: Vol. 34, No. 230, pp. 394-394.
openaire   +2 more sources

Synthesis of faujasite membranes [PDF]

, 2009
Mestrado em Ciência e Engenharia de MateriaisOs processos de separação usando membranas são cada vez mais frequentes para aplicações industriais devido à superioridade técnica e económica deste tipo de metodologia.
Machado, Andreia Filipa Gouveia
core  

Sustainable synthesis of a Faujasite-Na/geopolymer composite from kaolin residues for water treatment

Journal of Engineering and Applied Science
This paper presents a novel method for preparing Faujasite-Na/geopolymer composite using kaolin-based aluminum sulfate residue (KASR), along with meta-kaolinite (MK), to remove methylene blue (MB) from wastewater.
Mohamed A. A. Soliman, Fayza S. Hashem, Noura Fathy Abdel Salam, Nabil Abdullah Al-Sagheer   +3 more
doaj   +1 more source

Gold nanoparticles as efficient antimicrobial agents for Escherichia coli and Salmonella typhi

Chemistry Central Journal, 2013
Background It is imperative to eliminate bacteria present in water in order to avoid problems in healthy. Escherichia coli and Salmonella typhi bacteria are two common pollutants and they are developing resistance to some of the most used bactericide ...
Lima Enrique, Guerra Roberto, Lara Víctor, Guzmán Ariel   +3 more
doaj   +1 more source

Green synthesis of nanocrystalline faujasite zeolite

Ultrasonics Sonochemistry, 2018
In this work, the synthesis of 28 and 38 nm Na-Y zeolite nanocrystals is reported. The process was performed via green synthesis without any organic structure directing agents (SDAs), at low temperature and applying ultrasound-assisted aging. The zeolite nanoparticles obtained were characterized by X ray diffraction (XRD), scanning electron microscopy (
Reinoso, Deborath Mariana, Adrover, María Esperanza, Pedernera, Marisa Noemi   +2 more
openaire   +3 more sources

Effective Removal of Fe and Ca From Coal Fly Ash for High‐Purity and High‐Surface‐Area Zeolite X Synthesis: A Comparative Study of Acid Refluxing and Acid Roasting Methods

ChemistryOpen, Volume 15, Issue 5, May 2026.
Coal fly ash (CFA) is an abundant industrial waste rich in silica and alumina and represents a viable feedstock for zeolite synthesis; however, high levels of calcium and iron limit zeolite purity and crystallisation. This study evaluates acid refluxing and acid roasting as pre‐treatment strategies for the simultaneous removal of Ca and Fe from high ...
Emmanuel Monkgomotsi Victor Gaolefufa, Thapelo Manyapedza, Isaac N. Beas, Bakang F. Modukanele, Moses T. Kabomo   +4 more
wiley   +1 more source