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Nitrobenzene

About: Nitrobenzene is a research topic. Over the lifetime, 5285 publications have been published within this topic receiving 83368 citations. The topic is also known as: essence of mirbane & nitrobenzol.


Papers
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Journal ArticleDOI
TL;DR: The catalytic properties of the palladium complex for the hydrogenation of aromatic nitro compounds were investigated in this article, where copolymers, poly(4-vinylpyridine- co-acrylic acid) (PVPA), with different composition were synthesized, and their palladium complexes were prepared.
Abstract: Copolymers, poly(4-vinylpyridine- co -acrylic acid) (PVPA), with different composition were synthesized, and their palladium complexes were prepared. The catalytic properties of the palladium complex for the hydrogenation of aromatic nitro compounds were investigated. The palladium complex of PVPA can form a homogeneous system in ethanol. The optimum catalytic activity for hydrogenation of nitrobenzene was obtained when the molar content of 4-vinylpyridine (VPy) units in PVPA was 57.5% and VPy/Pd molar ratio was 6. The presence of 0.1 mol/l KOH can promote the catalytic activity to a great extent. In most cases, the hydrogenation of aromatic nitro compounds yields the corresponding aniline compounds almost quantitatively. The catalyst shows especially good activity for the hydrogenation of nitrophenols and nitroanisoles. The catalytic stability was also examined.

32 citations

Journal ArticleDOI
23 Oct 2017
TL;DR: The Au/Al2O3 was found to be highly active and selective for conversion of nitrobenzene to aniline when used with formic acid in acetonitrile or to azobenzene when performed with KOH in 2-propanol under irradiation with green light-emitting diode.
Abstract: Au nanoparticles supported on alumina (Au/Al2O3) with average particle size of 3.9 ± 0.7 nm and surface plasmon band centerned at 516.5 nm were prepared by deposition–precipitation method, and their photocatalytic activities for the reduction of nitrobenzene using either formic acid in acetonitrile (method A) or KOH in 2-propanol (method B) were investigated. Even at room temperature, the Au/Al2O3 was found to be highly active and selective for conversion of nitrobenzene to aniline when used with formic acid in acetonitrile or to azobenzene when performed with KOH in 2-propanol under irradiation with green light-emitting diode (517 nm).

32 citations

Journal ArticleDOI
TL;DR: In this article, the barrier heights to the internal rotation of the nitro group in 2-nitroresorcinol, 4-6-dinitro-resorcinol, and nitrobenzene have been determined by the application of a dynamic model to the electron diffraction data.

32 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the micro amounts of strontium and barium extracted by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−1) in the presence of benzo-18-crown-6 (B18C6, L) with the equilibrium data been explained assuming that the complexes HL+, ML2+, ML22+ and MHL23+ (M2+ = Sr2+, Ba2+) are extracted into the organic phase.
Abstract: Extraction of microamounts of strontium and barium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−1) in the presence of benzo-18-crown-6 (B18C6, L) has been investigated. The equilibrium data been explained assuming that the complexes HL+, ML2+, ML22+ and MHL23+ (M2+ = Sr2+, Ba2+) are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined.

32 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of solvent, temperature, pressure, reaction time, and molar-ratio of substrate/catalyst on product composition were studied, which shed light on possible application to polyurethane chemistry since these amines are used as important precursors for diisocyanates.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023171
2022342
2021123
2020129
2019123
2018146