Gasoline bromine number

The effect of hydrotreating on the bromine number (olefinic content) of the catalytic cracker products is shown in Figures 11 and 12. The bromine numbers for gasoline and LCO fractions were measured directly using ASTM procedure D 1159. For the HCO, the bromine number could not be measured because of procedural problems. For the low severity cracking case. Figure 11, the... 

The simultaneous hydrogenation of olefins and thiophens in shale gasoline was studied by Bertil Hammar91. The selectivity of the process under different conditions was judged by determining bromine numbers (Br) and sulphur contents (5) of the reaction products. 

Lubeck, A.J. Cook, R.D., Bromine number should replace FIA in gasoline olefins testing. 

A2.1.1 This procedure covers the calculation of the volume percentage of olefins from the bromine number in straight-run, reformed, cracked gasolines and commercial gasolines t t have a 90 % boiling point below 200 C (392 F) and turbine fuel and l%rosine etc., boiling below 31S C (600 F) and having a bromine number of less than 20. 

Leaded gasoline, originally developed to decrease pollution, is now banned because the lead(II) bromide, PbBr2, emitted when it burns decomposes in the atmosphere into two serious pollutants, lead and bromine. The equation for this reaction is below. Determine the oxidation number for each atom in the equation and identify whether the reaction is a redox reaction or not. If the reaction is redox, identify what is oxidized and what is reduced. 

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