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1990 (1)
1988 (1)
1Author    H. D. Försterling, H. SchreiberRequires cookie*
 Title      
 Abstract    The reaction HBr02 + Br " + H + -»2 HOBr, which is the most important control reaction in the Belousov-Zhabotinsky (BZ) system, is investigated in competition to the AgBr precipitation reaction Ag+ + Br" — ► AgBr. It turns out that the bromite-bromide reaction starts even in the presence of Ag^ in high concentration; the rate of consumption of bromite by bromide, however, is slowed down significantly if silver ions are present in the system. The experiments reveal that the AgBr precipita­ tion reaction proceeds in a series of several steps, starting with a fast equilibrium. This way different experimental results on the influence of silver ions on the kinetics of the BZ reaction may now be better understood. 
  Reference    Z. Naturforsch. 43a, 956—960 (1988); received August 8 1988 
  Published    1988 
  Keywords    Belousov-Zhabotinsky Reaction, Bromous Acid, Bromide, Silver Bromide 
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 TEI-XML for    default:Reihe_A/43/ZNA-1988-43a-0956.pdf 
 Identifier    ZNA-1988-43a-0956 
 Volume    43 
2Author    Szilvia Murányi, Horst-Dieter FörsterlingRequires cookie*
 Title    Chloride Induced Oscillations in the Classical Belousov-Zhabotinsky Reaction Explained by the "Radicalator"-Model  
 Abstract    We detected non-bromide controlled oscillations, which appear in a classical Belousov-Zhabotin-sky (BZ) system at a high malonic acid/bromate ratio in the presence of added chloride. The oscillations start immediately after the addition of the catalyst. To explain the oscillations we assume control by a synergetic process involving both chloride ions and malonyl radicals. The experiments are well in accordance with calculations based on the "Radicalator" model. This model is also capable of explaining the rate of formation of C0 2 in the BZ system. 
  Reference    Z. Naturforsch. 45a, 135—144 (1990); received October 24 1989 
  Published    1990 
  Keywords    Belousov-Zhabotinsky reaction, Bromous acid, Chloride, Autocatalysis 
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 TEI-XML for    default:Reihe_A/45/ZNA-1990-45a-0135.pdf 
 Identifier    ZNA-1990-45a-0135 
 Volume    45