The use of diffuse-reflectance laser-flash photolysis to study the photochemistry of the kraft pulp treated with hydrogen peroxide under alkaline and acidic conditions

2002 ◽  
Vol 36 (3) ◽  
pp. 187-195 ◽  
Author(s):  
A. Wójciak ◽  
M. Sikorski ◽  
R. Gonzalez ◽  
J. L. Bourdelande ◽  
F. Wilkinson
Keyword(s):  
Hydrogen Peroxide ◽  
Kraft Pulp ◽  
Diffuse Reflectance ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Acidic Conditions

scholarly journals Generation of N,N-Di(4-bromophenyl)nitrenium Ion Under Acidic Conditions: Search for a Nitrenium Dication

2020 ◽  
Author(s):  
Andrea Zeppuhar ◽  
Daniel Falvey
Keyword(s):  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Cation Radical ◽  
Laser Flash ◽  
Strong Electron ◽  
Nitrenium Ion ◽  
Mechanistic Analysis ◽  
Separate Pathway ◽  
Acidic Conditions ◽  
Aqueous Conditions

The behavior of the N,N-di(4-bromophenyl)nitrenium ion under acidic aqueous conditions was examined via laser flash photolysis experiments. A long-lived species forms and can be assigned as the cation radical or the dication. This species is unreactive towards nucleophiles and reactive towards strong electron donors, consistent with a cation radical. Mechanistic analysis indicates its formation is through a separate pathway than that of the nitrenium ion, suggestive of a triplet mechanism.

Ketone photochemistry on solid silica. A diffuse reflectance laser flash photolysis study

1985 ◽  
Vol 119 (6) ◽  
pp. 484-488 ◽  
Author(s):  
Nicholas J. Turro ◽  
Ian R. Gould ◽  
Matthew B. Zimmt ◽  
Chen-Chih Cheng
Keyword(s):  
Diffuse Reflectance ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash
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