Selectivity control of H2/O2 plasma reaction for direct synthesis of high purity H2O2 with desired concentration

Yi, Yanhui; Xu, C.; Wang, Li; Yu, Jianlin; Zhu, Qingyu; Sun, Shida; Tu, Xin; Meng, Changgong; Zhang, Jialiang; Guo, Hongchen

doi:10.1016/j.cej.2016.12.043

Cited by 13 publications

(9 citation statements)

References 58 publications

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“…Several accounts of the possible elementary steps during the direct synthesis of H2O2 have been described in literature by Wilson and Flaherty [40], Plauck et al [51] and Yi et al [52], to name a few. Scheme 5 depicts the series of steps that lead to the synthesis of H2O2 and H2O during the direct synthesis approach using Pd catalysts in liquid solvents.…”

Section: Series Of Elementary Steps In H2o2 Synthesismentioning

confidence: 99%

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis—A Review

2018

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Hydrogen peroxide is an important chemical of increasing demand in today’s world. Currently, the anthraquinone autoxidation process dominates the industrial production of hydrogen peroxide. Herein, hydrogen and oxygen are reacted indirectly in the presence of quinones to yield hydrogen peroxide. Owing to the complexity and multi-step nature of the process, it is advantageous to replace the process with an easier and straightforward one. The direct synthesis of hydrogen peroxide from its constituent reagents is an effective and clean route to achieve this goal. Factors such as water formation due to thermodynamics, explosion risk, and the stability of the hydrogen peroxide produced hinder the applicability of this process at an industrial level. Currently, the catalysis for the direct synthesis reaction is palladium based and the research into finding an effective and active catalyst has been ongoing for more than a century now. Palladium in its pure form, or alloyed with certain metals, are some of the new generation of catalysts that are extensively researched. Additionally, to prevent the decomposition of hydrogen peroxide to water, the process is stabilized by adding certain promoters such as mineral acids and halides. A major part of today’s research in this field focusses on the reactor and the mode of operation required for synthesizing hydrogen peroxide. The emergence of microreactor technology has helped in setting up this synthesis in a continuous mode, which could possibly replace the anthraquinone process in the near future. This review will focus on the recent findings of the scientific community in terms of reaction engineering, catalyst and reactor design in the direct synthesis of hydrogen peroxide.

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Section: Series Of Elementary Steps In H2o2 Synthesismentioning

confidence: 99%

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis—A Review

2018

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“…Several accounts of the possible elementary steps during the direct synthesis of H 2 O 2 has been described in literature by Wilson and Flaherty 39 , Plauck et al 50 , Yi et al 51 Based on these assumptions, the first step is that the hydrogen adsorbs dissociatively on to the catalyst surface (step 1…”

Section: Series Of Elementary Steps In H 2 O 2 Synthesismentioning

confidence: 99%

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis – a review

Ranganathan¹,

Sieber²

2018

Preprint

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Hydrogen peroxide is an important chemical of increasing demand in today’s world. Currently, the anthraquinone autoxidation process dominates the industrial production of hydrogen peroxide. Herein, hydrogen and oxygen are reacted indirectly in the presence of quinones to yield hydrogen peroxide. Owing to the complexity and multi-step nature of the process, it is advantageous to replace the process with an easier and straightforward one. The direct synthesis of hydrogen peroxide from its constituent reagents is an effective and clean route to achieve this goal. Factors such as water formation due to thermodynamics, explosion risk, and the stability of the hydrogen peroxide produced hinder the applicability of this process at an industrial level. Currently, the catalysis for the direct synthesis reaction is palladium based and the research into finding an effective and active catalyst has been ongoing for more than a century now. Palladium in its pure form, or alloyed with certain metals are some of the new generation of catalysts that are extensively researched. Additionally, to prevent the decomposition of hydrogen peroxide to water, the process is stabilised by adding certain promoters such as mineral acids and halides. A major part of today’s research in this field focusses on the reactor and the mode of operation required for synthesising hydrogen peroxide. The emergence of microreactor technology has helped in setting up this synthesis in a continuous mode, which could possibly replace the anthraquinone process in the near future. This review will focus on the recent findings of the scientific community in terms of reaction engineering, catalyst and reactor design in the direct synthesis of hydrogen peroxide.

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“…26 Our group demonstrated that DBD plasma is a potential method for direct synthesis of high purity H 2 O 2 from H 2 and O 2 without using any catalysts. 27−30 We also reported that high-value liquid chemicals and fuels were produced through a CH 4 –CO 2 reforming reaction in a designed DBD plasma reactor. 31 For the best of our knowledge, the direct synthesis of the C≡N group containing compounds except HCN by CH 4 /NH 3 plasma coupling reaction has not yet been reported.…”

Section: Introductionmentioning

confidence: 99%

Plasma-Triggered CH₄/NH₃ Coupling Reaction for Direct Synthesis of Liquid Nitrogen-Containing Organic Chemicals

Zhang

Wang

et al. 2017

ACS Omega

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Nitrogen-containing organic chemicals such as amines, amides, nitriles, and hydrazones are crucial in chemical and medical industries. This paper reports a direct synthesis of N , N -dimethyl cyanamide [(CH 3 ) 2 NCN] and amino acetonitrile (NH 2 CH 2 CN) through a methane/ammonia (CH 4 /NH 3 ) coupling reaction triggered by dielectric barrier discharge plasma, with by-products of hydrazine, amines, and hydrazones. The influence of CH 4 /NH 3 molar ratio, feedstock residence time, and specific energy input on the CH 4 /NH 3 plasma coupling reaction has been investigated and discussed. Under the optimized conditions, the productivities of (CH 3 ) 2 NCN and NH 2 CH 2 CN reached 0.46 and 0.82 g·L –1 ·h –1 , respectively, with 8.83% CH 4 conversion. In addition, through combining the optical emission spectra diagnosis and the reaction results, a possible CH 4 /NH 3 plasma coupling reaction mechanism has been proposed. This paper provides a potential fine application of CH 4 and NH 3 in green synthesis of liquid nitrogen-containing organic chemicals, such as nitriles, amines, amides, and hydrazones.

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Selectivity control of H2/O2 plasma reaction for direct synthesis of high purity H2O2 with desired concentration

Cited by 13 publications

References 58 publications

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis—A Review

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis—A Review

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis – a review

Plasma-Triggered CH₄/NH₃ Coupling Reaction for Direct Synthesis of Liquid Nitrogen-Containing Organic Chemicals

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Selectivity control of H2/O2 plasma reaction for direct synthesis of high purity H2O2 with desired concentration

Cited by 13 publications

References 58 publications

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis—A Review

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis—A Review

Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis &ndash; a review

Plasma-Triggered CH4/NH3 Coupling Reaction for Direct Synthesis of Liquid Nitrogen-Containing Organic Chemicals

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Product

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Recent Advances in the Direct Synthesis of Hydrogen Peroxide Using Chemical Catalysis – a review

Plasma-Triggered CH₄/NH₃ Coupling Reaction for Direct Synthesis of Liquid Nitrogen-Containing Organic Chemicals