Browsing by Author "Kirilov P.P."

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    Conversion of ammonium cyanate solution at 293.15 K
    (2018-01-01) Lilov M.E.; Kirilov P.P.
    Conversion of 0.064 mol L-1 ammonium cyanate solution has been studied at 298.15 K over a time period of 90 days. The data is obtained by periodic measurement of the electric conductivity, pH and concentration of the main species of the solution such as cyanate, urea, ammonim carbonate and ammonium hydrogencarbonate. The distribution of the species in the solution during this period is presented in graphic mode. The pH value increases gradually due to the formation of NH4HCO3 and (NH4)2CO3. The spontaneous conversion of the ammonium cyanate ions to a neutral substance, urea, is accompanied by a sharp conductance decrease. Ammonium cyanate hydrolysis to NH4HCO3 and (NH4)2CO3 proceeds to a much smaller extent than that of urea conversion. During 90 days storage of the solution at 298.15 K the degree of overall transformation of ammonium cyanate is found equal to 96.3 %.