Mesoporous silica-immobilized FeCl3 as a highly efficient and recyclable catalyst for the nitration of benzene with NO2 to nitrobenzene

Zhou, Shuli; You, Kuiyi; Gao, Hongxu; Deng, Renjie; Zhao, Fu‐Gang; Liu, Pingle; Ai, Qiuhong; Luo, He’an

doi:10.1016/j.mcat.2016.12.001

Cited by 35 publications

(20 citation statements)

References 49 publications

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“…This result confirmed that only a slight loss of the catalyst occurred during the course of the work‐up process. We think that the possible reason for the extreme stability of FeCl 3 /SiO 2 may be due to the immobilization of FeCl 3 on the surface of SiO 2 by bonding of FeCl 3 and silicon hydroxy groups (Si–OH) in forming the new Lewis acid sites of Si–O–FeCl 2 . These satisfying results of the gram‐scale reaction and recyclable catalyst highlight its suitability for a potential industrial application.…”

Section: Resultsmentioning

confidence: 97%

A General and Practical Approach for the Synthesis of 1,2,4‐Trioxanes Catalyzed by Silica‐Ferric Chloride

et al. 2017

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An efficient andp ractical method has been developed for the facile synthesiso f1 ,2,4-trioxanes by the condensation of b-hydroperoxy alcohols and carbonylcompoundsinthe presence of acatalytic amount of silica-supported ferric chloride (FeCl 3 / SiO 2 )a tr oom temperature.T he method has the benefits of operational simplicity, high yieldsa nd potential large-scale application. Moreover, the catalyst can be readily recovered by simple filtration and reused up to five times while almost maintaining its catalytic activity.

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Section: Resultsmentioning

confidence: 97%

A General and Practical Approach for the Synthesis of 1,2,4‐Trioxanes Catalyzed by Silica‐Ferric Chloride

et al. 2017

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“…Here, 15 % FeCl 3 −SiO 2 ‐system exhibited good catalytic performance in terms of yield. Reusable catalyst, higher selectivity and higher amount of yield make this process green and commercial utility [61] …”

Section: Nitration Using Miscellaneous Reagents Such As Ionic Liquidmentioning

confidence: 99%

Synthetic Protocols for Aromatic Nitration: A Review

Patel

2021

ChemistrySelect

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Nitration of aromatic compounds represents a powerful and widely used transformation that allows introducing nitro group into aromatic systems. New synthetic strategies for aromatic nitration are deeply needed, including highly efficient and selective nitration methods. Aromatic nitration plays an important part in the industry, as the main use of nitration is to produce important products such as dyes & intermediate compounds, drugs, and Agrochemicals. The electrophilic aromatic nitration is most studied and important transformation in industrial process. This review will describe different possible methodologies that apply to this fundamental transformation with special attention to the most recent development that lasted from 2017–2020. The main pros and cons of recent nitration methods are briefly described with their specific reaction mechanism and highlighting the most important feature of the present aromatic nitration method.

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“…For both hypochlorite solutions, an additional clear peak at around 380-390 cm −1 is present. This is most probably related to the Fe-Cl band (Réguer et al 2007), either from FeCl 3 , which is characterized by two peaks at 400 and 600 cm −1 (Zhou et al 2017), or from akaganéite (β-FeO(OH, Cl)), which has main peaks at 307 and 387 cm −1 (Réguer et al 2007), or a combination of these. Both EDS and Raman spectroscopy analyses suggest the presence of chlorine-and iron-containing corrosion products in the case of treatment with hypochlorite solutions.…”

Section: Solutionmentioning

confidence: 99%

Comparison of different surface disinfection treatments of drinking water facilities from a corrosion and environmental perspective

Romanovski

Claesson

Hedberg

2020

Environ Sci Pollut Res

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Surface disinfection of water facilities such as water wells requires measures that can remove pathogens from the walls to ensure a high drinking water quality, but many of these measures might increase corrosion of the contact surfaces (often highly pure steel) and affect the environment negatively due to disinfectant-contaminated waste sludge and wastewater. Today, most treatments worldwide are based on hypochlorites. We investigated the extent of corrosion during treatments of steel at relevant conditions of ozone, sodium, and calcium hypochlorite for drinking water preparation, utilizing weight loss, electrochemical, solution analytical, and surface analytical methods. The ozone treatment caused significantly less corrosion as compared with sodium or calcium hypochlorite with 150-250 mg/L active chlorine. Hypochlorite or other chlorine-containing compounds were trapped in corrosion products after the surface disinfection treatment with hypochlorite, and this risked influencing subsequent corrosion after the surface disinfection treatment. A life cycle impact assessment suggested ozone treatment to have the lowest negative effects on human health, ecosystems, and resources. Calcium hypochlorite showed the highest negative environmental impact due to its production phase. Our study suggests that ozone surface disinfection treatments are preferable as compared with hypochlorite treatments from corrosion, economic, and environmental perspectives.

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Mesoporous silica-immobilized FeCl3 as a highly efficient and recyclable catalyst for the nitration of benzene with NO2 to nitrobenzene

Cited by 35 publications

References 49 publications

A General and Practical Approach for the Synthesis of 1,2,4‐Trioxanes Catalyzed by Silica‐Ferric Chloride

A General and Practical Approach for the Synthesis of 1,2,4‐Trioxanes Catalyzed by Silica‐Ferric Chloride

Synthetic Protocols for Aromatic Nitration: A Review

Comparison of different surface disinfection treatments of drinking water facilities from a corrosion and environmental perspective

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