SN2, E2 reactions of butylchlorides on NaY zeolite: A potential method for studying the formation and reactivity of alkoxy species on the zeolite surface

2002 ◽  
Vol 4 (17) ◽  
pp. 4268-4274 ◽  
Author(s):  
Rodrigo J. Corrêa ◽  
Claudio J. A. Mota
Keyword(s):  
Potential Method ◽  
Zeolite A ◽  
Nay Zeolite ◽  
Zeolite Surface

scholarly journals Cation Migration and Structural Deformations upon Dehydration of Nickel-Exchanged NaY Zeolite: A Combined Neutron Diffraction and Monte Carlo Study

2016 ◽  
Vol 120 (32) ◽  
pp. 18115-18125 ◽  
Author(s):  
Wilfried Louisfrema ◽  
Jean-Louis Paillaud ◽  
Florence Porcher ◽  
Elsa Perrin ◽  
Thomas Onfroy ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Neutron Diffraction ◽  
Monte Carlo Study ◽  
Zeolite A ◽  
Nay Zeolite ◽  
Cation Migration ◽  
Structural Deformations

Adsorption of Chloroform in NaY Zeolite:  A Computational and Vibrational Spectroscopy Study

1998 ◽  
Vol 102 (14) ◽  
pp. 2530-2535 ◽  
Author(s):  
Caroline F. Mellot ◽  
Anne M. Davidson ◽  
Juergen Eckert ◽  
Anthony K. Cheetham
Keyword(s):  
Vibrational Spectroscopy ◽  
Zeolite A ◽  
Spectroscopy Study ◽  
Nay Zeolite

Macroscopic and Molecular Insights from CO Adsorption on NaY Zeolite: A Combined FTIR and Manometric Study

2012 ◽  
Vol 116 (20) ◽  
pp. 11195-11199 ◽  
Author(s):  
Olivier Cairon ◽  
Jean-Pierre Bellat
Keyword(s):  
Co Adsorption ◽  
Zeolite A ◽  
Nay Zeolite ◽  
Manometric Study

scholarly journals Adsorption modification of the zeolite surface with chitosan

2019 ◽  
pp. 20-26
Author(s):  
Zhadra Tattibayeva ◽  
Mirzhan Tursynbetov ◽  
Sagdat Tazhibayeva ◽  
Wojciech Kujawski ◽  
Kuanyshbek Musabekov
Keyword(s):  
High Temperature ◽  
Solid Phase ◽  
Acid Activation ◽  
Zeolite A ◽  
Amino Groups ◽  
Oh Groups ◽  
Zeolite Surface ◽  
Modified Zeolite ◽  
Chitosan Concentration ◽  
Langmuir And Freundlich Models

In order to modify the surface, thermal acid activation of the zeolite of the Chankanai deposit was conducted. It was found that the treatment of the mineral with acid at high temperature leads to a decrease in the content of Ca, Al and Sr in its composition. Adsorption of chitosan on the surface of thermoacid-activated zeolite was also studied. Processing of the adsorption isotherms according to Langmuir and Freundlich models showed that the maximum adsorption of chitosan on the zeolite surface is 30.1 mg/g and the Freundlich constant 1/n is 0.75. On the IR-spectra of chitosan-modified zeolite, a certain shift to the higher frequencies of the peak was found at the oscillation frequency of 1638 cm-1, which can be explained by the contribution of amino groups adsorbed on the surface of the mineral. The shift to the left of the peak at 581 cm-1, typical for aluminosilicate groups, is also an evidence of their interactions with chitosan. When studying the effect of chitosan concentration on the wetting of the modified zeolite powder, it was found that at concentration of 2.10-3 base mol/L, an increase in the wetting angle from 10° to 47° occurs due to surface overcharging. According to the data of adsorption, IR spectroscopy and wetting of the surface, the main mechanism for binding chitosan to the zeolite surface was due to the electrostatic interaction of polymer amino groups with silicate and aluminosilicate groups of the mineral, stabilized by hydrogen bonds between the OH-groups of the polymer and ≡Si-O-groups of the solid phase.

scholarly journals NaY Zeolite: A Useful Catalyst for Nitrile Hydrolysis

Molecules ◽  
2000 ◽  
Vol 5 (12) ◽  
pp. 118-126 ◽  
Author(s):  
Dragana Milić ◽  
Dejan Opsenica ◽  
Borivoje Adnađević ◽  
Bogdan Šolaja
Keyword(s):  
Zeolite A ◽  
Nay Zeolite ◽  
Nitrile Hydrolysis

Calcination-Dependence of Platinum Cluster Formation in NAY Zeolite: A Xenon-129 NMR Study

1989 ◽  
pp. 269-278 ◽  
Author(s):  
B.F. Chmelka ◽  
L.C. de Menorval ◽  
R. Csencsits ◽  
R. Ryoo ◽  
S.B. Liu ◽  
...  
Keyword(s):  
Cluster Formation ◽  
Zeolite A ◽  
Nay Zeolite ◽  
Platinum Cluster ◽  
Nmr Study

ChemInform Abstract: Yb Modified NaY Zeolite: A Recyclable and Efficient Catalyst for Quinoxaline Synthesis.

ChemInform ◽  
2015 ◽  
Vol 46 (4) ◽  
pp. no-no
Author(s):  
Li-Yan Fan ◽  
Lin Wei ◽  
Wen-Jun Hua ◽  
Xiang-Xiong Li
Keyword(s):  
Zeolite A ◽  
Nay Zeolite ◽  
Efficient Catalyst

Magnetization ofPt13clusters supported in a NaY zeolite: A XANES and XMCD study

2009 ◽  
Vol 80 (1) ◽  
Author(s):  
J. Bartolomé ◽  
F. Bartolomé ◽  
L. M. García ◽  
E. Roduner ◽  
Y. Akdogan ◽  
...  
Keyword(s):  
Zeolite A ◽  
Nay Zeolite
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