The Chemistry and Characteristics of Nitric Acid-Graphite Intercalation

1982 ◽  
Vol 20 ◽  
Author(s):  
Sophia R. Su ◽  
Daniel W. Oblas
Keyword(s):  
Mass Spectrometry ◽  
Nitric Acid ◽  
Gas Phase ◽  
Contributory Factor ◽  
Fourth Stage ◽  
Acid Vapor ◽  
Step Process ◽  
Second Stage ◽  
Graphite Intercalation ◽  
One Step

ABSTRACTGas-phase intercalation of graphite by nitric acid is a one-step process. The weight uptake of the sample is a function of nitric acid vapor pressure. A pure second stage compound was formed when the HNO3 reservoir was maintained at 17°C. Only a fourth stage compound was formed when the acid was kept at 0°C. The product gases due to intercalation and gas species evolved during deintercalation were analyzed by mass spectrometry. NO2 and H2O were the major components detected from the intercalation product gases. A small amount of oxygen was also present. The existence of O2 is probably due to the photo-chemical decomposition of nitric acid. As such, the photodecomposition of nitric acid is not a contributory factor in the intercalation chemistry.

Cobalt-Mediated Decarboxylative Homocoupling of Alkynyl Carboxylic Acids

2014 ◽  
Vol 67 (5) ◽  
pp. 701 ◽  
Author(s):  
Michael G. Leeming ◽  
George N. Khairallah ◽  
Sandra Osburn ◽  
Krista Vikse ◽  
Richard A. J. O'Hair
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Final Stage ◽  
Mononuclear Complex ◽  
Collision Induced Dissociation ◽  
Reductive Coupling ◽  
Second Stage ◽  
Mononuclear Complexes ◽  
Relative Activation ◽  
Bond Homolysis

Cobalt-mediated decarboxylative Glaser-like C–C bond coupling of carboxylates has been studied in the gas phase using collision-induced dissociation (CID) multistage mass spectrometry (MSn) experiments. Both the identity of the carboxylate RCO2– (R = Me, HC≡C, MeC≡C, and PhC≡C) and the nuclearity of the complex ([CoCl(O2CR)2]– versus [Co2Cl3(O2CR)2]–) play a role in the types of reactions observed and their relative activation energies. In the first stage of CID, the mononuclear complex [CoCl(O2CMe)2]– undergoes decarboxylation, while the dinuclear [Co2Cl3(O2CMe)2]– undergoes cluster fission to yield [CoCl3]–; all acetylenic carboxylate complexes [CoCl(O2CR)2]– and [Co2Cl3(O2CR)2]– undergo decarboxylation. Isolation of the decarboxylated products followed by a second stage of CID results in a second decarboxylation event for all systems except for [CoCl(Me)(O2CMe)]–, which undergoes bond homolysis. In the final stage of CID, all acetylenic complexes undergo Glaser coupling, forming reduced Co anions. Overall dinuclear cobalt clusters are superior to mononuclear complexes at promoting decarboxylation and reductive coupling. The order of reactivity among the acetylide ligands is PhC≡C > MeC≡C > HC≡C.

scholarly journals A simple one step process for enhancement of titanium foil dye sensitised solar cell anodes

2015 ◽  
Vol 3 (7) ◽  
pp. 3266-3270 ◽  
Author(s):  
J. Linnemann ◽  
J. Giorgio ◽  
K. Wagner ◽  
G. Mathieson ◽  
G. G. Wallace ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Nitric Acid ◽  
Acid Treatment ◽  
Photovoltaic Performance ◽  
Titanium Foil ◽  
Step Process ◽  
One Step

This communication highlights a simple nitric acid treatment, which enhances the properties of titanium foil and improves the photovoltaic performance of dye sensitised solar cells.

One-Step Oxidation of Benzene Producing Eight High Value Compounds Using Nitric Acid and Hydrogen Peroxide

2015 ◽  
Vol 19 (0) ◽  
pp. 55-58
Author(s):  
Zhen-xue Liu ◽  
◽  
Zhong-xue Gan ◽  
Jun-jie Gu ◽  
Qing-feng Song
Keyword(s):  
Hydrogen Peroxide ◽  
Nitric Acid ◽  
One Step ◽  
Oxidation Of Benzene

Atmosphere × Canopy Interactions of Nitric Acid Vapor in Loblolly Pine Grown in Open‐Top Chambers

1993 ◽  
Vol 22 (1) ◽  
pp. 70-80 ◽  
Author(s):  
G. E. Taylor ◽  
J. G. Owens ◽  
T. Grizzard ◽  
W. J. Selvidge
Keyword(s):  
Nitric Acid ◽  
Loblolly Pine ◽  
Acid Vapor ◽  
Open Top Chambers
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