Results 21 to 30 of about 6,114 (206)

Quasi Natural Approach for Crystallization of Zeolites from Different Fly Ashes and Their Application as Adsorbent Media for Malachite Green Removal from Polluted Waters

Crystals, 2020
Worldwide disposal of multi-tonnage solid waste from coal-burning thermal power plants (TPPs) creates serious environmental and economic problems, which necessitate the recovery of industrial waste in large quantities and at commercial prices. Fly ashes (
Denitza Zgureva, Valeria Stoyanova, Annie Shoumkova, Silviya Boycheva, Georgi Avdeev   +4 more
doaj   +1 more source

The Removal of Cadmium, Cobalt, and Nickel by Adsorption with Na-Y Zeolite [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2020
The article aims to study the removal of heavy metal ions Cd2+, Co2+, and Ni2+ from an aqueous solution using faujasite NaY. The adsorption studies were carried out in the single and binary component system.
Manel Araissi, Elimame Elaloui, Younes Moussaoui   +2 more
doaj   +1 more source

Oxidative Dehydrogenation of Propane over Vanadium-Containing Faujasite Zeolite

Molecules, 2020
Oxidative dehydrogenation (ODH) of light alkanes to olefins—in particular, using vanadium-based catalysts—is a promising alternative to the dehydrogenation process.
Małgorzata Smoliło, Katarzyna Samson, Ting Zhou, Dorota Duraczyńska, Małgorzata Ruggiero-Mikołajczyk, Agnieszka Drzewiecka-Matuszek, Dorota Rutkowska-Zbik   +6 more
doaj   +1 more source

Hemicellulose hydrolysis catalysed by solid acids [PDF]

, 2013
Depolymerising hemicellulose into platform sugar molecules is a key step in developing the concept of an integrated biorefinery. This reaction is traditionally catalysed by either enzymes or homogeneous mineral acids.
Alonso, Andrijanto, Bandyopadhyay, Butler, Cano-Serrano, Ciriminna, Corma, Corma, Dhepe, Dhepe, Fukuoka, Fukuoka, Gallezot, Guerbuez, Hara, Huber, Kim, Kusema, Li, Minowa, Mäki-Arvela, Ogaki, Onda, Palkovits, Pang, Rinaldi, Rinaldi, Rose, Sahu, Serrano-Ruiz, Shiju, Shiju, Siril, Strassberger, Suganuma, Takagaki, Van de Vyver, Villandier, Wilson, Xing, Xing   +40 more
core   +1 more source

Utilização de zeólitas sintetizadas a partir de xisto retortado na remoção de arsênio em águas contaminadas Use of zeolites synthesized from oil shale ash for arsenic removal from polluted water

Química Nova, 2007
The solid by-product of the oil shale processing (PETROBRAS - Brazil) was used as raw material to synthesize zeolites A and faujasite. Alkaline fusion followed by hydrothermal treatment was the synthesis procedure used, and five different starting ...
Nádia Regina Camargo Fernandes-Machado, Denise Maria Malachini Miotto-Bigatão   +1 more
doaj   +1 more source

Encapsulated Non‐Exchangeable Na+ Ions Determining the Upper Limit of Al Inclusion in FAU—A Multiscale Simulation

Angewandte Chemie, Volume 138, Issue 11, 9 March 2026.
DFT computation, AIMD simulations, machine learning, statistical analysis, and experimental characterization reveal that the upper limit of Al inclusion in FAU zeolite synthesized under hydrothermal conditions is determined by the encapsulated non‐exchangeable Na+ ions.
Qi Dong, Tao Zhang, Chuanhao Zhang, Tong Zhang, Yanze Du, Jinghong Ma, Ruifeng Li, Bo Qin, Haijun Jiao   +8 more
wiley   +2 more sources

Molecular recognition on acoustic wave devices [PDF]

, 1992
Microporous thin films composed either of zeolite crystals embedded in sol-gel derived glass or of a molecular coupling layer, zeolite crystals and a porous silica overlayer, were formed on the gold electrodes of Quartz Crystal Microbalances (QCM). The
Bein, Thomas, Brinker, Jeffrey, Brown, Kelly D., Forrister, Ray, Yan, Yongan   +4 more
core   +1 more source

Transition phases of zeolite Faujasite type to Sodalite by thermal treatment

Semina: Ciências Exatas e Tecnológicas, 2015
The zeolites can have several functions as catalysts (biofuel production) and molecular sieves (treatment of contaminated areas). This study aims to characterize the zeolites obtained in the transition of a Faujasite like zeolite into a Sodalite, when ...
Katia K. Kaminishikawahara, Laura J. Pereira, Éder C. F. de Souza, Maria Elena Payret Arrúa, Sandra Regina Masetto Antunes, André V. C. de Andrade, Helton J. Alves, Augusto C. Antunes   +7 more
doaj   +1 more source

Facile fabrication of novel analcime/sodium aluminum silicate hydrate and zeolite Y/faujasite mesoporous nanocomposites for efficient removal of Cu(II) and Pb(II) ions from aqueous media

Journal of Materials Research and Technology, 2020
In this work, novel mesoporous sodium aluminum silicate hydrate/analcime and zeolite Y/faujasite nanocomposites were fabricated utilizing the hydrothermal method using glutamic acid and L-arginine as organic structure-directing agents.
Ehab A. Abdelrahman, Ahmed Alharbi, Abdu Subaihi, Ahmed M. Hameed, Mohammed A. Almutairi, Faisal K. Algethami, Hany M. Youssef   +6 more
doaj   +1 more source

Organic pollution selective degradation by adsorption on high silica zeolites and regeneration by ozone [PDF]

, 2007
This study concerns the treatment of industrial airstreams polluted with volatile organic compounds (VOCs), and focuses on highlighting the experimental feasibility of a new hybrid process combining VOC adsorption on hydrophobic zeolites and regeneration
Biscans, Béatrice, Frances, Christine, Schetrite, Sylvie, Tourbin, Mallorie   +3 more
core   +2 more sources