Kinetics and Mechanism of Micellar Catalyzed Oxidation of Dextrose by N-Bromosuccinimide in H₂SO₄ Medium

Table 2

Dependence of first-order rate constants on NBS, dextrose, and H₂SO₄ for the oxidation of dextrose by N-bromosuccinimide in the absence and presence of SDS and TX-100 at 40°C.

10^2, dextrose; mol dm^−3	10^4, NBS; mol dm^−3	10^4, H2SO4; mol dm^−3	Acetic acid; (%) (v/v)	10^4, s^−1
				Aqueous^a	SDS^b	TX-100^c
1.0	2.0	0.5	30	0.36	0.46	1.54
2.5				0.59	0.68	2.30
5.0				0.78	0.98	3.07
10				1.13	1.35	4.63
20				1.6	1.95	5.59
2.5	1.0	0.5	30	0.78	0.69	2.34
	2.0			0.78	0.68	2.30
	3.0			0.78	0.68	2.29
	4.0			0.76	0.68	2.28
	5.0			0.74	0.67	2.25
2.5	2.0	0.5	30	0.78	0.68	2.30
		1.0		0.64	0.54	1.74
		2.5		0.48	0.38	1.0
		5.0		0.38	0.30	0.65
		10		0.31	0.24	0.46
2.5	2.0	0.5	20	0.39	0.94	2.64
			30	0.42	0.86	2.47
			35	0.57	0.68	2.30
			40	0.78	0.57	2.10
			50	0.88	0.48	1.55

Hg(OAc)₂ = 5.0 10⁻⁴ mol dm⁻³.
^bSDS = 1.0 10⁻² mol dm⁻³; Hg(OAc)₂ = 5.0 10⁻⁴ mol dm⁻³.
^cTX-100 = 1.0 10⁻³ mol dm⁻³; Hg(OAc)₂ = 5.0 10⁻⁴ mol dm⁻³.