535-87-5Relevant articles and documents
Synthesis of CoFe2O4@Pd/Activated carbon nanocomposite as a recoverable catalyst for the reduction of nitroarenes in water
Hamadi, Hosein,Kazeminezhad, Iraj,Mohammadian, Sara
, (2021/07/06)
Efficient reduction of nitro compounds into amines is an important industrial transformation. So, it is a great deal to design new catalysts for efficient reduction of the nitro compounds especially in water. In this work, a new magnetic Pd/activated carbon nanocomposite (CoFe2O4@Pd/AC) was synthesized via metal-impregnation-pyrolysis method. The CoFe2O4@Pd/AC was fully characterized by FT-IR, PXRD, FESEM, TEM, VSM, EDX-mapping and BET techniques. The results showed that CoFe2O4@Pd/AC is a highly reactive and easily recoverable magnetic catalyst for the reduction of the nitro compounds by using NaBH4 in water. For instance, aniline was obtained in high yield (99%) after 75 ?min at 25 ?C by using just 6 ?mg of the catalyst. In addition, CoFe2O4@Pd/AC was recovered by a simple magnetic decantation and it exhibits stable activity and remains intact during the catalytic process with no significant loss in activity (8 cycles).
Heterogeneous AgPd Alloy Nanocatalyst for Selective Reduction of Aromatic Nitro Compounds Using Formic Acid as Hydrogen Source
Babel, Vikram,Hiran
, p. 1865 - 1869 (2020/01/28)
Abstract: A Heterogeneous catalyst developed for selective reduction of nitroarenes to the analogous anilines using formic acid as hydrogen source. This catalytic procedure offers a simplistic path to prepare aromatic amines in good to excellent yields. Especially, even anilines functionalized with other potentially reducible moieties are obtained with high selectivity. Herein, we report convenient and stable bimetallic AgPd nanocatalyst supported on metal organic framework coated with polyaniline. Hydrogenation of nitroarenes gave analogues anilines with excellent yields at 90?°C in 6?h with no use of additives. Catalyst maintained stable performance in five repeated cycles. Graphic Abstract: [Figure not available: see fulltext.].
Preparation method of 3,5-diaminobenzoic acid
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Paragraph 0025; 0026; 0031; 0036; 0040; 0045; 0053, (2018/02/04)
The invention discloses a preparation method of 3,5-diaminobenzoic acid. The preparation method comprises steps as follows: m-dinitrobenzoic acid and hydrogen are subjected to a reduction reaction in a solvent under the action of a hydrogenation catalyst, and after the reaction, 3,5-diaminobenzoic acid is obtained through treatment, wherein the hydrogenation catalyst is an Ni-M-Al three-way catalyst, and M is La, Yb or Ce. According to the preparation method of 3,5-diaminobenzoic acid, the new three-way catalyst is adopted as the hydrogenation catalyst, the pressure of hydrogenation is effectively reduced, meanwhile, the usage quantity of the catalyst is reduced, and accordingly, 3,5-diaminobenzoic acid prepared through catalytic hydrogenation has higher industrial application value.