Adsorption and desorption of phenylalanine and tryptophane on a nonionic polymeric sorbent

2006 ◽  
Vol 23 (5) ◽  
pp. 812-818 ◽  
Author(s):  
Jae-Wook Lee ◽  
Thi Phuong Binh Nguyen ◽  
Hee Moon
Keyword(s):  
Polymeric Sorbent ◽  
Adsorption And Desorption ◽  
Nonionic Polymeric Sorbent

Adsorption and desorption properties of three types of agricultural humic acids for K+

2011 ◽  
Vol 37 (1) ◽  
pp. 103-106
Author(s):  
Jian-xin LUO ◽  
Wei GUO ◽  
Hui YAN ◽  
Qiong YANG ◽  
Xin-liang DONG ◽  
...  
Keyword(s):  
Humic Acids ◽  
Adsorption And Desorption

Adsorption and desorption of NO, CO and H2 on Pt(111): Laser-induced thermal desorption studies

1986 ◽  
Vol 176 (1-2) ◽  
pp. 134-156 ◽  
Author(s):  
E.G. Seebauer ◽  
A.C.F. Kong ◽  
L.D. Schmidt
Keyword(s):  
Thermal Desorption ◽  
Adsorption And Desorption

Effects of metal loading on activated carbon on its adsorption and desorption characteristics

2019 ◽  
Vol 74 ◽  
pp. 199-207 ◽  
Author(s):  
Ji Hye Park ◽  
Ra Hyun Hwang ◽  
Hyung Chul Yoon ◽  
Kwang Bok Yi
Keyword(s):  
Activated Carbon ◽  
Adsorption And Desorption ◽  
Metal Loading

scholarly journals The Properties of Cu Ions in Zeolites CuY Studied by IR Spectroscopy

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4686
Author(s):  
Jerzy Podobiński ◽  
Mariusz Gackowski ◽  
Grzegorz Mordarski ◽  
Katarzyna Samson ◽  
Michał Śliwa ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Positive Charge ◽  
Co Adsorption ◽  
The Other ◽  
Probe Molecules ◽  
Adsorption And Desorption ◽  
Other Hand ◽  
Close Proximity ◽  
No And Co Adsorption ◽  
Cu Ions

The properties of both Cu2+ and Cu+ ions in zeolite CuY were followed with NO and CO as probe molecules. Cu2+ was found to be located in SII, SII*, and SIII sites, whereas Cu+ was found in SII and SII* sites. The fine analysis of the spectra of Cu2+-NO and Cu+-CO adducts suggests that both in SII and in SII* sites two kinds of Cu cations exist. They differ in the positive charge, which may be related to the varying numbers of AlO4− in close proximity. The experiments of NO and CO adsorption and desorption evidenced that both Cu2+ and Cu+ sites of highest positive charge bind probe molecules most strongly but activate them to a lesser extent than the Cu sites of lowest positive charge. The experiments of reduction with hydrogen evidenced that the Cu ions of higher positive charge are first reduced by hydrogen. On the other hand, Cu sites of the lowest positive charge are first oxidized by oxygen. The experiments with CuNaY zeolites of various Cu contents suggest that the first introduced Cu (at low Cu contents) created Cu+, which was the most neutralized by framework oxygens. Such Cu cations are the most stabilized by framework oxygens.

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