Cleaner and atomic economy production of hydroxylamine hydrochloride under solvent-free conditions through process intensification

Yu, Haoxuan; Shang, Fangfang; Chu, Qingyan; Wang, Ping; Wang, Ming; Zhu, Hongjun; Song, Feng; Yang, H.; Diao, Tonghe

doi:10.1016/j.jclepro.2020.122187

Cited by 15 publications

(4 citation statements)

References 30 publications

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“…Nitrogen adsorption–desorption isotherms are illustrated in Figure d. The isotherms display a hysteresis loop in the range of relative pressure ( P / P 0 ) of 0.8 to 1.0, indicating the existence of mesopores in the samples, , and the isotherm of Ti-MWW-P shows a larger hysteresis loop than that of other samples. The mesopore volume and the BET surface area of Ti-MWW-P are larger than that of others (listed in Table S1).…”

Section: Resultsmentioning

confidence: 97%

Clean Synthesis of Ti-MWW by Utilizing the Recycled Mother Liquor

Wen

Zhang

et al. 2021

ACS Omega

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This article introduces a clean and efficient method for the synthesis of Ti-MWW by utilizing the recycled mother liquor. The effects of titanium and silicon sources on the synthesis of Ti-MWW and the recycling of the mother liquor are discussed in detail. Precipitated silica prepared with Na2SiO3 and CO2 was selected as the silicon source, and TiCl3 was selected as the titanium source. The mother liquor was recycled five times, and the obtained samples showed good catalytic activity in cyclohexanone ammoximation. This work can be conducive to reducing the influence on the environment and economizing on materials for the industrial production of Ti-MWW.

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Section: Resultsmentioning

confidence: 97%

Clean Synthesis of Ti-MWW by Utilizing the Recycled Mother Liquor

Wen

Zhang

et al. 2021

ACS Omega

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“…The traditional method for NH 2 OH preparation is the hydrolysis of ketoxime, which is prepared under harsh conditions, causing serious environmental and energy concerns (Figure 1a). [1b, 2] Thus, new routes for the sustainable synthesis of NH 2 OH are needed. Nitric oxide (NO) from automobile and industrial exhaust is discharged into the atmosphere, threatening human health [3] .…”

Section: Figurementioning

confidence: 99%

Linear Adsorption Enables NO Selective Electroreduction to Hydroxylamine on Single Co Sites

et al. 2023

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Hydroxylamine (NH2OH), a vital industrial feedstock, is presently synthesized under harsh conditions with serious environmental and energy concerns. Electrocatalytic nitric oxide (NO) reduction is attractive for the production of hydroxylamine under ambient conditions. However, hydroxylamine selectivity is limited by the competitive reaction of ammonia production. Herein, we regulate the adsorption configuration of NO by adjusting the atomic structure of catalysts to control the product selectivity. Co single‐atom catalysts show state‐of‐the‐art NH2OH selectivity from NO electroreduction under neutral conditions (FE NH2OH ${{_{{\rm NH}{_{2}}{\rm OH}}}}$ : 81.3 %), while Co nanoparticles are inclined to generate ammonia (FE NH3 ${{_{{\rm NH}{_{3}}}}}$ : 92.3 %). A series of in situ characterizations and theoretical simulations unveil that linear adsorption of NO on isolated Co sites enables hydroxylamine formation and bridge adsorption of NO on adjacent Co sites induces the production of ammonia.

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“…However, the traditional pathways for producing NH 2 OH in the industry include the hydrolysis of nitromethane, nitrate reduction method, Raschig process, [7] which inevitably require separation units, storage and transportation, leading to low production efficiency, high energy consumption and increased waste emissions. Furthermore, NH 2 OH is chemically unstable, having a greater risk of explosion after heating and an irritating effect on the human respiratory system, skin, eyes, etc [6a,8] . The development of a safer and cleaner system for reforming existing production models is imperative, and the utilization of hydroxylamine produced in situ appears to be a promising approach [9]…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Synthesis of Pyridine Oximes using in Situ Generated NH₂OH from NO species on Nanofiber Membranes Derived from NH₂‐MIL‐53(Al)

Xiang,

Wang,

Liao

et al. 2023

Angew Chem Int Ed

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Pyridine oximes producing from aldehyde or ketone with hydroxylamine (NH2OH) have been widely applied in pharmaceutics, enzymatic and sterilization. However, the important raw material NH2OH, exhibits corrosive and unstable properties, leading to substantial energy consumption during storage and transportation. Herein, this work presents a novel method for directly synthesizing highly valuable pyridine oximes using in situ generated NH2OH from electrocatalytic NO reduction with well‐design nanofiber membranes (Al‐NFM) derived from NH2‐MIL‐53(Al). Particularly, 2‐pyridinealdoxime, the precursor of antidote pralidoxime (2‐PAM) for nerve agents suffering from scarcity and high cost, was achieved with a Faraday efficiency up to 49.8 % and a yield of 92.1%, attributing to the high selectivity of NH2OH production on Al‐NFM, further easily reacted with iodomethane to produce 2‐PAM. This study proposes a creative approach, having wide universality for synthesizing pyridine and other oximes with a range of functional groups, which not only facilitates the conversion of exhaust gas (NO) and waste water (NO2‐) into valuable chemicals especially NH2OH production and in‐situ utilization through electrochemistry, but also holds significant potential for synthesis of neuro detoxifying drugs to humanity security.

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Cleaner and atomic economy production of hydroxylamine hydrochloride under solvent-free conditions through process intensification

Cited by 15 publications

References 30 publications

Clean Synthesis of Ti-MWW by Utilizing the Recycled Mother Liquor

Clean Synthesis of Ti-MWW by Utilizing the Recycled Mother Liquor

Linear Adsorption Enables NO Selective Electroreduction to Hydroxylamine on Single Co Sites

Electrocatalytic Synthesis of Pyridine Oximes using in Situ Generated NH₂OH from NO species on Nanofiber Membranes Derived from NH₂‐MIL‐53(Al)

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Cleaner and atomic economy production of hydroxylamine hydrochloride under solvent-free conditions through process intensification

Cited by 15 publications

References 30 publications

Clean Synthesis of Ti-MWW by Utilizing the Recycled Mother Liquor

Clean Synthesis of Ti-MWW by Utilizing the Recycled Mother Liquor

Linear Adsorption Enables NO Selective Electroreduction to Hydroxylamine on Single Co Sites

Electrocatalytic Synthesis of Pyridine Oximes using in Situ Generated NH2OH from NO species on Nanofiber Membranes Derived from NH2‐MIL‐53(Al)

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Electrocatalytic Synthesis of Pyridine Oximes using in Situ Generated NH₂OH from NO species on Nanofiber Membranes Derived from NH₂‐MIL‐53(Al)