Recently Used Nanocatalysts in Reduction of Nitroarenes

Sedghi, Roya; Heravi, Majid M.; Asadi, Sareh; Nazari, Niousha; Nabid, Mohammad Reza

doi:10.2174/1385272819666150907192826

Cited by 23 publications

(5 citation statements)

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“…Therefore, the development of effective catalysts for the decomposition of nitrophenols is an urgent and necessary task. To date, many papers have dealt with the reaction of liquid phase hydrogenation of aromatic nitro compounds by using nanoscale heterogeneous catalysts (Figure 7) [69][70][71][72][73][74]. The influence of various factors such as deposition temperature, testing mode, template modification, etc.…”

Section: Assessment Of Catalytic Activitymentioning

confidence: 99%

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

et al. 2020

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One of the promising applications of nanomaterials is to use them as catalysts and sorbents to remove toxic pollutants such as nitroaromatic compounds and heavy metal ions for environmental protection. This work reports the synthesis of Cu/CuO-deposited composite track-etched membranes through low-temperature annealing and their application in catalysis and sorption. The synthesized Cu/CuO/poly(ethylene terephthalate) (PET) composites presented efficient catalytic activity with high conversion yield in the reduction of nitro aryl compounds to their corresponding amino derivatives. It has been found that increasing the time of annealing raises the ratio of the copper(II) oxide (CuO) tenorite phase in the structure, which leads to a significant increase in the catalytic activity of the composites. The samples presented maximum catalytic activity after 5 h of annealing, where the ratio of CuO phase and the degree of crystallinity were 64.3% and 62.7%, respectively. The catalytic activity of pristine and annealed composites was tested in the reduction of 4-nitroaniline and was shown to remain practically unchanged for five consecutive test cycles. Composites annealed at 140 °C were also tested for their capacity to absorb arsenic(III) ions in cross-flow mode. It was observed that the sorption capacity of composite membranes increased by 48.7% compared to the pristine sample and reached its maximum after 10 h of annealing, then gradually decreased by 24% with further annealing.

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Section: Assessment Of Catalytic Activitymentioning

confidence: 99%

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

et al. 2020

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“…In the last years, reviews on the topic of nitro compounds reduction appeared in the literature. − However, many of them deal exclusively with noble-metal catalysts, , specific substrates or reducing agents, or focus on synthetic methodologies . Complementary, herein the progress of nitro compounds reduction using non-noble metal catalysts is comprehensively reviewed focusing our attention from 2000 on.…”

Section: Introduction: Setting the Scenementioning

confidence: 99%

Reduction of Nitro Compounds Using 3d-Non-Noble Metal Catalysts

et al. 2018

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The reduction of nitro compounds to the corresponding amines is one of the most utilized catalytic processes in the fine and bulk chemical industry. The latest development of catalysts with cheap metals like Fe, Co, Ni and Cu has led to their tremendous achievements over the last years prompting to their greater application as "standard" catalysts. In this review we will comprehensively discuss the use of homogeneous and heterogeneous catalysts based on non-noble 3d-metals for the reduction of nitro compounds using various reductants. The different systems will be revised considering both the catalytic performances and synthetic aspects highlighting also their advantages and disadvantages.

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“…In the past, a noncatalytic process was used for the reduction of nitro compounds using stoichiometric reducing agents ( 5 ), an approach that demonstrated some drawbacks, such as the release of wastes and the high cost of reducing agents. Therefore, considerable attention has shifted to the catalytic reduction of nitro compounds into amines because of the compatibility of environmentally friendly catalytic methods with industrial processes ( 6 , 7 ).…”

Section: Introductionmentioning

confidence: 99%