scholarly journals Encapsulation of Tetracarbonyl(trimethylstannyl)cobalt in NaY Zeolite: Reactivity and Alloy Cluster Formation

1994 ◽  
Vol 98 (46) ◽  
pp. 12067-12074 ◽  
Author(s):  
Christian Huber ◽  
Karin Moller ◽  
Thomas Bein
Keyword(s):  
Cluster Formation ◽  
Nay Zeolite ◽  
Alloy Cluster

Probing metal cluster formation in NaY zeolite by xenon-129 NMR

1988 ◽  
Vol 110 (13) ◽  
pp. 4465-4467 ◽  
Author(s):  
B. F. Chmelka ◽  
R. Ryoo ◽  
S. B. Liu ◽  
L. C. De Menorval ◽  
C. J. Radke ◽  
...  
Keyword(s):  
Metal Cluster ◽  
Cluster Formation ◽  
Nay Zeolite

ChemInform Abstract: Probing Metal Cluster Formation in NaY Zeolite by 129Xe NMR.

ChemInform ◽  
1988 ◽  
Vol 19 (38) ◽  
Author(s):  
B. F. CHMELKA ◽  
R. RYOO ◽  
S.-B. LIU ◽  
L. C. DE MENORVAL ◽  
C. J. RADKE ◽  
...  
Keyword(s):  
Metal Cluster ◽  
Cluster Formation ◽  
Nay Zeolite ◽  
129Xe Nmr

General Cluster Sorption Isotherm

2020 ◽  
Author(s):  
Christoph Buttersack
Keyword(s):  
Density Functional ◽  
Capillary Condensation ◽  
Cluster Formation ◽  
Full Range ◽  
Full Description ◽  
Cross Sectional ◽  
Macroporous Silica ◽  
Isotherm Equation ◽  
Type Iv ◽  
Classical Thermodynamics

<p>Adsorption isotherms are an essential tool in chemical physics of surfaces. However, several approaches based on a different theoretical basis exist and for isotherms including capillary condensation existing approaches can fail. Here, a general isotherm equation is derived and applied to literature data both concerning type IV isotherms of argon and nitrogen in ordered mesoporous silica, and type II isotherms of disordered macroporous silica. The new isotherm covers the full range of partial pressure (10<sup>-6</sup> - 0.7). It relies firstly on the classical thermodynamics of cluster formation, secondly on a relationship defining the free energy during the increase of the cluster size. That equation replaces the Lennard-Jones potentials used in the classical density functional theory. The determination of surface areas is not possible by this isotherm because the cross-sectional area of a cluster is unknown. Based on the full description of type IV isotherms, most known isotherms are accessible by respective simplifications. </p>

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