Catalytic Reduction of Nitroarenes with Hydrazine Hydrate in Suitable Solvents

Surfactant mediated nanoparticle assembly of catalytic mesoporous crystalline iron oxide materials

“…Conventionally (H 3 O)Fe 3 (SO 4 ) 2 (OH) 6 can be prepared by the hydrolysis of Fe 3+ ions in Fe 2 (SO 4 ) 3 solutions at 120 or 140 • C [30,31]. In the present work, the groups of SO 4 2− in the formed ((H 3 O)Fe 3 (SO 4 ) 2 (OH) 6 can only be from the surfactant dodecylsulfonate. This suggests that the surfactant SDS did take a role in the formation of the mesoporous iron oxide materials, as also verified by the low-angle diffraction peaks.…”

“…4 shows the XRD patterns of the samples synthesized at 80 • C in the presence of different surfactants. The Brij 56-and CPCl-mediated samples still presented akaganeite structure, which was transformed to hematite structure after degassing at 300 • C. Whereas the SDS-mediated samples presented a bicrystalline structure of akaganeite and hydronium jarosite ((H 3 O)Fe 3 (SO 4 ) 2 (OH) 6 , JCPDS no. 31-0650) (Fig.…”

“…Miyata et al [3] studied the catalytic activity of several iron oxides and oxide hydroxides of various particle sizes in the reduction of 4-nitrotoluene using hydrazine hydrate as reducing agent, and found ␤-FeOOH was the most effective catalyst. A recently developed iron hydroxide catalyst [4], prepared by rapid precipitation of iron hydroxides from solutions of iron(III) chloride, with a ferrihydrite structure [5] showed a much higher activity than the ␤-FeOOH used by Miyata et al [3] and Ayyangar et al [6]. Various organic contaminants (for example, toxic 2-chlorophenol) in water or soil could be oxidized by hydrogen peroxide in the presence of iron oxides [7].…”

Bis(3-aminophenyl) sulfone acetonitrile solvate

“…For related literature, see: Yang et al (2003); Rudyk et al (2003); Ayyangar et al (1981). For bond-length data, see: Allen et al (1987).…”

“…The title compound, (I), was prepared according to the literature method (Ayyangar et al, 1981). Crystals suitable for Xray analysis were obtained by dissolving (I) (0.2 g) in acetonitrile (25 ml) and evaporating the solvent slowly at room temperature for about 7 d.…”