Properties of adsorption solution in NaX zeolite

Langmuir ◽  
1988 ◽  
Vol 4 (6) ◽  
pp. 1223-1229 ◽  
Author(s):  
O. G. Larionov ◽  
E. S. Yakubov
Keyword(s):  
Nax Zeolite ◽  
Adsorption Solution

scholarly journals Effects of Electronegativity and Hydration Energy on the Selective Adsorption of Heavy Metal Ions by Synthetic NaX Zeolite

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4066
Author(s):  
Xianyuan Fan ◽  
Hong Liu ◽  
Emmanuella Anang ◽  
Dajun Ren
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Heavy Metal Ions ◽  
Binary Systems ◽  
Adsorption Mechanism ◽  
Selective Adsorption ◽  
Hydration Energy ◽  
Nax Zeolite ◽  
High Electronegativity

The adsorption capacity of synthetic NaX zeolite for Pb2+, Cd2+, Cu2+ and Zn2+ in single and multi-component systems were investigated. The effects of electronegativity and hydration energy on the selective adsorption, as well as potential selective adsorption mechanism of the NaX zeolite for Pb2+, Cd2+, Cu2+ and Zn2+ were also discussed. The maximum adsorption capacity order of the heavy metals in the single system was Pb2+ > Cd2+ > Cu2+ > Zn2+, and this could be related to their hydration energy and electronegativity. The values of the separation factors (α) and affinity constant (KEL) in different binary systems indicated that Pb2+ was preferentially adsorbed, and Zn2+ presented the lowest affinity for NaX zeolite. The selective adsorption capacities of the metals were in the order, Pb2+ > Cd2+ ≈ Cu2+ > Zn2+. The trend for the selective adsorption of NaX zeolite in ternary and quaternary systems was consistent with that in the binary systems. Pb2+ and Cu2+ reduced the stability of the Si-O-Al bonds and the double six-membered rings in the NaX framework, due to the high electronegativity of Pb2+ and Cu2+ than that of Al3+. The selective adsorption mechanism of NaX zeolite for the high electronegative metal ions could mainly result from the negatively charged O in the Si-O-Al structure of the NaX zeolite, hence heavy metal ions with high electronegativity display a strong affinity for the electron cloud of the oxygen atoms in the Si-O-Al. This study could evaluate the application and efficiency of zeolite in separating and recovering certain metal ions from industrial wastewater.

Fast removal of the acid properties in the NaX zeolite by ion-exchange under microwave heating

2004 ◽  
Vol 5 (3) ◽  
pp. 157-160 ◽  
Author(s):  
M.D. Romero ◽  
G. Ovejero ◽  
M.A. Uguina ◽  
A. Rodrı&#x;guez ◽  
J.M. Gómez
Keyword(s):  
Ion Exchange ◽  
Microwave Heating ◽  
Acid Properties ◽  
Nax Zeolite ◽  
Fast Removal

Reinventing rice husk ash: derived NaX zeolite as a high-performing CO2 adsorbent

2017 ◽  
Vol 15 (7) ◽  
pp. 1543-1550 ◽  
Author(s):  
N. Gargiulo ◽  
K. Shibata ◽  
A. Peluso ◽  
P. Aprea ◽  
T. Valente ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
High Performing ◽  
Nax Zeolite ◽  
Co2 Adsorbent

The Adsorption and Chemistry of Tripropyl phosphate (TPP) into Microporous and Mesoporous NaX Zeolites

2011 ◽  
Vol 1304 ◽  
Author(s):  
Qingguo Meng ◽  
David C. Doetschman ◽  
Apostolos K. Rizos ◽  
Min-Hong Lee ◽  
Jürgen T. Schulte ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Properties ◽  
Nmr Spectra ◽  
Nitrogen Adsorption ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nax Zeolite ◽  
Stoichiometric Amount ◽  
Polydiallyldimethylammonium Chloride ◽  
Adsorption Analysis

ABSTRACTAdsorption and chemistry of tripropylphosphate (TPP) in mesoporous NaX zeolite, which was templated by cationic templated polymer (polydiallyldimethylammonium chloride, PDADMAC) with two different length chains, was investigated. The structural properties of the zeolites were characterized by X-ray diffraction (XRD) and nitrogen adsorption analysis. The chemical activities of different zeolites toward the decomposition of TPP were determined with solid state 31P NMR spectra. After exposure of zeolites to TPP was sufficient and equilibrium was reached, a stoichiometric amount of water was also adsorbed and hydrolysis was observed. The TPP decomposition yields in different NaX zeolites were compared.

scholarly journals Synthesis and Characterization of Mesoporous NaX Zeolite from Kaolin Loading of Soursop Leaves Extract (Annona muricata Linn.)

ALCHEMY ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 100
Author(s):  
Ilmin Nasifah ◽  
Susi Nurul Khalifah ◽  
Elok Kamilah Hayati
Keyword(s):  
Hydrothermal Method ◽  
Ethanol Extract ◽  
Nitrogen Adsorption ◽  
Synthesis And Characterization ◽  
Annona Muricata ◽  
Nax Zeolite ◽  
Loading Process ◽  
Uniform Particles ◽  
Calcined Kaolin

<p>Mesoporous NaX zeolite has been synthesized from calcined kaolin with the addition of 5M NaOH and CTABr surfactant as mesoporous template by hydrothermal method. The result of synthesis was used as anticancer loading agent of ethanol extract soursop leaves. Characteristics of zeolite were studied by XRD, IR spestroscopy, Nitrogen Adsorption and SEManalysis. The mesoporous NaX zeolite has been formed with mixing of A, Y, kaolinite and quartz phases. The surface of zeolite particles has changed from amorphous to regular and uniform particles. The pores of NaX zeolite belongs to mesoporous type with size 6.13 nm. Loading process of soursop leaves extract on zeolite decreased intensity and crystallinity of zeolite peaks. The new absorption in soursop leaves extract loaded on zeolite spectra was detected at 2928.174 cm<sup>-1</sup>. The surface of zeolite seen to be compact and irregular.</p>

Heats of xenon adsorption on Nax zeolite at high pressures and various temperatures

1991 ◽  
Vol 40 (1) ◽  
pp. 205-208 ◽  
Author(s):  
V. Yu. Gusev ◽  
A. A. Fomkin ◽  
N. I. Regent ◽  
V. V. Serpinskii
Keyword(s):  
High Pressures ◽  
Nax Zeolite ◽  
Xenon Adsorption
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