Promoter (mol dm-3) Micellar catalyst (mol dm-3) 104 × kobs (sec-1) t1/2 (hrs)
None None 0.125 ± 0.01 15.4
1,10 - phenanthroline (phen) 0.0025
0.005
0.0075
0.01
0.0125
                                                        None 0.33 ± 0.03
0.833 ± 0.02
1.33 ± 0.01
1.5 ± 0.04
1.8 ± 0.02
5.83
2.31
1.44
1.28
1.07
1,10 - phenanthroline (phen) 0.0025
0.005
0.0075
0.01
0.0125
  SDS   0.02 2 ± 0.01
4 ± 0.03
5 ± 0.02
7 ± 0.01
9 ± 0.02
0.962
0.481
0.385
0.275
0.214
1,10 - phenanthroline (phen) 0.0025
0.005
0.0075
0.01
0.0125
  TX-100   0.02 3.33 ± 0.02
2.83 ± 0.04
2.5 ± 0.03
2.3 ± 0.04
1.8 ± 0.01
0.57
0.68
0.77
0.83
1.06
1,10 - phenanthroline (phen) 0.0025
0.005
0.0075
0.01
         
CPC
  0.02 0.5 ± 0.01
0.67 ± 0.02
1.0 ± 0.02
0.86 ± 0.03
3.85
2.87
1.92
2.32
(Cr(VI))T=5 × 10-4 mol dm-3, (H2SO4)T=0.5 mol dm-3, (DMSO)T=75 × 10-4 mol dm-3, Temp=30°C
Table 1: kobs and half life of the reaction in presence and absence of promoter and non-functional micellar catalyst.