HPLC Studies on the Organic Subset of the Oscillatory BZ Reaction. 2. Two Different Types of Malonyl Radicals in the Ce4+−Malonic Acid Reaction

1996 ◽  
Vol 100 (8) ◽  
pp. 3051-3055 ◽  
Author(s):  
Atchara Sirimungkala ◽  
Horst-Dieter Försterling ◽  
Zoltan Noszticzius
Keyword(s):  
Malonic Acid ◽  
Bz Reaction ◽  
Different Types ◽  
Acid Reaction

HPLC Studies on the Organic Subset of the Oscillatory BZ Reaction 1. Products of the Ce4+-Malonic Acid Reaction

1994 ◽  
Vol 98 (34) ◽  
pp. 8377-8380 ◽  
Author(s):  
Ying Gao ◽  
Horst-Dieter Foersterling ◽  
Zoltan Noszticzius ◽  
Bernhard Meyer
Keyword(s):  
Malonic Acid ◽  
Bz Reaction ◽  
Acid Reaction

Turing patterns in the chlorine dioxide–iodine–malonic acid reaction with square spatial periodic forcing

2012 ◽  
Vol 14 (18) ◽  
pp. 6577 ◽  
Author(s):  
Daniel Feldman ◽  
Raphael Nagao ◽  
Tamás Bánsági Jr. ◽  
Irving R. Epstein ◽  
Milos Dolnik
Keyword(s):  
Malonic Acid ◽  
Chlorine Dioxide ◽  
Turing Patterns ◽  
Periodic Forcing ◽  
Acid Reaction

HPLC Studies on the Organic Subset of the Oscillatory BZ Reaction. 3. Products of the Ce4+−Bromomalonic Acid Reaction

1998 ◽  
Vol 102 (6) ◽  
pp. 922-927 ◽  
Author(s):  
Julia Oslonovitch ◽  
Horst-Dieter Försterling ◽  
Mária Wittmann ◽  
Zoltán Noszticzius
Keyword(s):  
Bz Reaction ◽  
Bromomalonic Acid ◽  
Acid Reaction

Oxidation of Malonic Acid by Ceric Ions Subset of the Belousov-Zhabotinsky Reaction

1987 ◽  
Vol 42 (9) ◽  
pp. 963-969 ◽  
Author(s):  
H.D. Försterling ◽  
R. Pachl ◽  
H. Schreiber
Keyword(s):  
Sulfuric Acid ◽  
Malonic Acid ◽  
Reaction Rate ◽  
Primary Source ◽  
Acid Solutions ◽  
Bz Reaction ◽  
Sulfuric Acid Solutions ◽  
Belousov Zhabotinsky Reaction ◽  
Kinetics Of

The kinetics of the Ce4+-decay and the formation of CO2 are measured in sulfuric acid solutions of malonic acid. The reaction rate is slowed down by Ce3+ -ions due to a reaction of Ce3+ with malonic acid radicals. The primary source of CO2 is the decarboxylation of malonic acid radicals. Implications on the mechanism of the BZ reaction are discussed.

Rapid Identification of Polyisoprene in Cured and Uncured Compounds

1960 ◽  
Vol 33 (2) ◽  
pp. 591-594
Author(s):  
Eloisa B. Mano
Keyword(s):  
Natural Rubber ◽  
British Literature ◽  
Industrial Development ◽  
Rapid Identification ◽  
X Ray Diffraction ◽  
Routine Work ◽  
Great Utility ◽  
Different Types ◽  
Acid Reaction ◽  
Chromic Oxidation

Abstract On account of the industrial development of synthetic elastomers the identification of the different types of rubber in artifacts became a necessity. Several methods have been tried and periodically reviewed by Bekkedhal and by Tyler and Higuchi. As far as the synthetic rubbers are concerned, the types being produced in industrial quantities have characteristic groups which permit their easy detection by chemical means. However, natural rubber, poly-cis-isoprene, presents a more difficult identification, especially if in admixture with other elastomers and compound ingredients, in vulcanizates—and the same is true for the synthetic poly-cis-isoprene, the production of which has just recently started. The use of special techniques as X-ray diffraction, infrared spectroscopy and chromatography permits the identification of the natural rubber hydrocarbon, but equipment for them is not always available for routine work. Simple techniques have been tried. Not mentioning methods which depend on experimenter interpretation, as behavior to burning, which furnishes valuable preliminary information for an experimenter, we verified that two tests in the British literature are of great utility. These consist of determining the swelling ratios in benzene, petroleum ether and aniline and the time of reaction in a mixture of concentrated nitric and sulfuric acids. As chemical reactions, characteristic of natural rubber and its reclaim, the old Weber reaction, the trichloroacetic acid reaction and the well known chromic oxidation to acetic acid are mentioned.

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