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Study of the alkylation of phenol with methanol on Zn(H)-exchanged NaY zeolites
(Springer, 2011-07)
The gas-phase alkylation of phenol with methanol was studied at 473 K on zeolite NaY exchanged with Zn+2 (samples Zn(x)NaY) or H+ (samples Na(x)HY) cations. Zeolite NaY contained only weak and medium Lewis acid sites. The ...
Zeolites surface reactions pointed out by charge parameters
(Elsevier Science, 2001-08)
The diffusion potential technique was applied to determine the isoelectric point (IEP) of solid samples taken after different reaction times in two selected zeolite hydrothermal transformations (1). NaA to HS and (2) NaY ...
Isobutane Alkylation with Solid Catalysts based on Beta-Zeolite
(Elsevier Science, 2010-11)
The isobutane alkylation with butenes is a reaction in which the substitution of mineral acids, such as sulphuric and hydrofluoric acids, by solid acid catalysts is highly desirable. Solid catalysts with good activity and ...
Ceramic papers containing Y zeolite for toluene removal
(Elsevier Science, 2011-11)
A papermaking technique with a dual polyelectrolyte retention system was used for the preparation of NaY zeolite-containing papers, which implied the use of cationic and anionic polymers. Two kinds of fibers were employed, ...
Cr(III) exchange on zeolites obtained from kaolin and natural mordenite
(ELSEVIER, 2006-01-21)
Zeolites with high Cr(III) exchange capacity were synthesized from kaolin and natural mordenite. The intermediate phases and final products were characterized by X-ray diffraction, FTIR spectroscopy, scanning electron ...
Impact of the Desilication Treatment of Y Zeolite on the Catalytic Cracking of Bulky Hydrocarbon Molecules
(Springer/Plenum Publishers, 2015-08)
Mesoporosity was induced on a USY zeolite by means of an alkaline leaching process. Samples were immersed in 0.05, 0.10 and 0.20 M NaOH solutions during 15 min at room temperature and then were exchanged with NH4+ ions and ...
Coke from SARA fractions in VGO. Impact on Y zeolite acidity and physical properties
(Elsevier, 2018-08)
The impact of the composition of the various hydrocarbon fractions in a conventional VGO (saturated SF, aromatic AF and resin RF) and the whole VGO on the coke formed in their catalytic cracking was evaluated over two Y ...
Selection of Adsorbents and Determination of Parameters for the Separation of Glucose, Fructose, Sucrose and Fructooligosaccharides
(Berkeley Electronic PressBerkeleyEUA, 2010)