Characterization of nanoporous materials from adsorption and desorption isotherms

2001 ◽  
Vol 187-188 ◽  
pp. 11-21 ◽  
Author(s):  
Peter I. Ravikovitch ◽  
Alexander V. Neimark
Keyword(s):  
Nanoporous Materials ◽  
Adsorption And Desorption ◽  
Desorption Isotherms

scholarly journals Characterization of Alachlor and Atrazine Desorption from Soils

Weed Science ◽  
1990 ◽  
Vol 38 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Sharon A. Clay ◽  
William C. Koskinen
Keyword(s):  
Silt Loam ◽  
Clay Loam ◽  
Adsorption And Desorption ◽  
Methanol Extraction ◽  
Application Rates ◽  
Desorption Isotherms ◽  
The Difference

Herbicide desorption isotherms may be affected by the amount of nondesorbable herbicide present in soil. Nondesorbable alachlor (as determined after methanol extraction) generally increased on a Waukegan silt loam (Typic Hapludolls) and a Ves clay loam (Udic Haplustolls) during five 0.01 M CaCl2desorptions. Atrazine was totally extracted with methanol from the Waukegan soil after one desorption using 0.01 M CaCl2. However, after five desorptions with 0.01 M CaCl2an average of 5.5 and 15.5% of the total recovered atrazine from two atrazine application rates was methanol nondesorbable from the Waukegan and Ves soils, respectively. Freundlich desorption isotherms adjusted for nondesorbable herbicide accounted for as much as 71 % of the difference between adsorption and desorption isotherms. Only a portion of the hysteresis observed can be attributable to nondesorbable herbicide.

Characterization of Mesoporous NaZSM-5 and K3PO4/NaZSM-5 from Adsorption and Desorption Isotherms

2017 ◽  
Vol 23 (12) ◽  
pp. 12025-12028
Author(s):  
Samik ◽  
Ratna Ediati ◽  
Didik Prasetyoko
Keyword(s):  
Adsorption And Desorption ◽  
Desorption Isotherms

scholarly journals Synthesis and Characterization of Nanoporous Monetite Which Can Be Applicable for Drug Carrier

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Esmael Salimi ◽  
Jafar Javadpour
Keyword(s):  
Surface Area ◽  
Cetyltrimethylammonium Bromide ◽  
Drug Carrier ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Plate Shape ◽  
Desorption Isotherms ◽  
Adsorption Desorption

Wormhole-like mesostructured monetite was successfully synthesized using cetyltrimethylammonium bromide (C19H42BrN, CTAB), as a porosity agent. X-ray techniques and FTIR reveal that the crystalline grains consist of highly crystalline pure monetite phase. Monetite rods with diameter around 20–40 nm and length in the range of 50–200 nm were confirmed by FESEM and TEM. Based on N2adsorption-desorption isotherms investigation, surface area increased up to 31.5 m2/g due to the removal of surfactant after calcinations at 400°C. The results indicate that CTAB can not only affect monetite crystallization but also change particles morphology from plate shape to rod-like.

Characterization of mesoporous region by the scanning of the hysteresis loop in adsorption–desorption isotherms

Adsorption ◽  
2021 ◽  
Author(s):  
C. F. Toncón-Leal ◽  
J. Villarroel-Rocha ◽  
M. T. P. Silva ◽  
T. P. Braga ◽  
K. Sapag
Keyword(s):  
Hysteresis Loop ◽  
Desorption Isotherms ◽  
Adsorption Desorption

Mechanical characterization of nanoporous materials by use of atomic force acoustic microscopy methods

2013 ◽  
Vol 24 (35) ◽  
pp. 355703 ◽  
Author(s):  
M Kopycinska-Müller ◽  
K-B Yeap ◽  
S Mahajan ◽  
B Köhler ◽  
N Kuzeyeva ◽  
...  
Keyword(s):  
Mechanical Characterization ◽  
Nanoporous Materials ◽  
Acoustic Microscopy ◽  
Atomic Force

Characterization of Nanoporous Materials

2021 ◽  
pp. 319-351
Author(s):  
Leila Keshavarz ◽  
Mohammad Reza Ghaani ◽  
Omid Saremi ◽  
Niall J. English
Keyword(s):  
Nanoporous Materials
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