Accession Number : AD0647886

Title :   INHIBITION OF THE THERMAL REACTION BETWEEN HYDROGEN AND OXYGEN.

Descriptive Note : Final scientific rept.,

Corporate Author : MANCHESTER COLL OF SCIENCE AND TECHNOLOGY (ENGLAND) DEPT OF CHEMISTRY

Personal Author(s) : Clark,D. R. ; Simmons,R. F.

Report Date : 01 DEC 1966

Pagination or Media Count : 20

Abstract : It was shown that the effect of hydrogen bromide on the second limit of the hydrogen-oxygen reaction in B2O3-coated reaction vessels can be explained in terms of the inhibition mechanism: H + HBr yields H2 + Br; Br + H2 yields HBr + H; Br + HO2 yields HBr + O2; Br + H2O2 yields HBr + HO2. A preliminary analysis of the experimental results suggests that k18 is approx. 1 x 100000/(mm Hg)/sec and k20 is approx. 1 x 10000/(mm Hg)/sec at 500C. A computer study of the surface destruction of chain centres was also made to establish whether the removal processes are independent of each other when two types of species are destroyed at the surface. It was found that these processes are almost independent of each other except when the efficiencies with which the two species are destroyed are vastly different. The application of these calculations to the first limit of the hydrogen-oxygen reaction is discussed. (Author)

Descriptors :   (*OXIDATION REDUCTION REACTIONS, INHIBITION), (*HYDROGEN, CHEMICAL REACTIONS), (*OXYGEN, CHEMICAL REACTIONS), CATALYSIS, BROMIDES, HYDROGEN COMPOUNDS, SURFACES, GREAT BRITAIN, REACTION KINETICS

Subject Categories : Inorganic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE