The solution flow through the nanochannel of MCM-41: a spin-probe study

2003 ◽  
Vol 23 (3-4) ◽  
pp. 435-444 ◽  
Author(s):  
M. Okazaki ◽  
K. Toriyama ◽  
N. Sawaguchi ◽  
K. Oda
Keyword(s):  
Spin Probe ◽  
Solution Flow ◽  
Flow Through ◽  
Mcm 41

Properties of the Silica Layer during the Formation of MCM-41 Studied by EPR of a Silica-Bound Spin Probe

2005 ◽  
Vol 109 (16) ◽  
pp. 7807-7816 ◽  
Author(s):  
Debbie Baute ◽  
Veronica Frydman ◽  
Herbert Zimmermann ◽  
Shifi Kababya ◽  
Daniella Goldfarb
Keyword(s):  
Spin Probe ◽  
Silica Layer ◽  
Mcm 41

The Condensation Process of Alcohol Molecules in the Nanochannel of MCM-41:  A Spin-Probe ESR Study

2008 ◽  
Vol 112 (3) ◽  
pp. 786-793 ◽  
Author(s):  
Masaharu Okazaki ◽  
Shinpei Iwamoto ◽  
Yoshimi Sueishi ◽  
Kazumi Toriyama
Keyword(s):  
Spin Probe ◽  
Condensation Process ◽  
Mcm 41

Spin-Probe ESR Study on the Entrapment of Organic Solutes by the Nanochannel of MCM-41 in Benzene

Langmuir ◽  
2007 ◽  
Vol 23 (3) ◽  
pp. 1215-1222 ◽  
Author(s):  
Masaharu Okazaki ◽  
Sambandam Anandan ◽  
Sindhu Seelan ◽  
Masakazu Nishida ◽  
Kazumi Toriyama
Keyword(s):  
Spin Probe ◽  
Organic Solutes ◽  
Mcm 41

Spin-Probe Study on the Dynamics and Distribution of Solution Molecules in the Nano-Channel of MCM-41

2004 ◽  
Vol 77 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Masaharu Okazaki ◽  
Kazumi Toriyama ◽  
Naoya Sawaguchi ◽  
Kiichi Oda
Keyword(s):  
Spin Probe ◽  
Nano Channel ◽  
Mcm 41

Effect of the Pore Formation on the Solution Flow through Acrylamide Gel

1999 ◽  
Vol 600 ◽  
Author(s):  
H. Tamagawa ◽  
S. Popovic ◽  
M. Taya
Keyword(s):  
Flow Rate ◽  
Pore Volume ◽  
Pore Formation ◽  
Volume Fraction ◽  
Synthesis Method ◽  
Solution Flow Rate ◽  
Gelation Temperature ◽  
Solution Flow ◽  
Pore Volume Fraction ◽  
Flow Through

AbstractA simple synthesis method of porous acrylamide gel is proposed. Pore formation in gel body is dominated by the amount of polymerization initiator, accelerator and gelation temperature. We investigated the influence of these factors on the number and the size of pores. Gelation temperature control is the easiest and the most effective way to create a number of large pores in a gel body. We also investigated the pore volume fraction dependence of solution flow through the gels. Solution flow rate was found to be promoted with the increase of pore volume fraction.

Chronopotentiometric studies of certain biologically important compounds at tubular graphite electrode

1991 ◽  
Vol 56 (9) ◽  
pp. 1833-1837
Author(s):  
Ram Parkash ◽  
Hari Om Gupta ◽  
Jatinder Dutt
Keyword(s):  
Sulfuric Acid ◽  
Graphite Electrode ◽  
Lone Pair ◽  
Cation Radical ◽  
Phenothiazine Derivatives ◽  
Solution Flow ◽  
Single Wave ◽  
Acidic Solutions ◽  
Flow Through ◽  
Hydrodynamic Systems

The chronopotentiometric studies of certain phenothiazines in hydrodynamic systems at a solution flow-through tubular graphite electrode were carried out in sulfuric acid of different concentrations. A well-defined single wave (involving 2 electrons) in 0.1M H2SO4 and two waves (involving 1 electron each) in 2.0M H2SO4 were observed. Phenothiazines are oxidized trough the formation of a monocation radical by the elimination of one electron from the lone pair of N-atom. The monocation radical is stable in sulfuric acid of a moderate concentration and is unstable in neutral or less acidic solutions. The cation radical undergoes instantaneous hydrolysis yielding sulfoxide, thus presenting an overall two-electron oxidation of the phenothiazine derivatives. The suitability of the chronopotentiometric technique for their determination was established.

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