Production of hydrogen peroxide and organic peroxides in the gas phase reactions of ozone with natural alkenes

1991 ◽  
Vol 18 (1) ◽  
pp. 9-12 ◽  
Author(s):  
R. Simonaitis ◽  
K. J. Olszyna ◽  
J. F. Meagher
Keyword(s):  
Hydrogen Peroxide ◽  
Gas Phase ◽  
Organic Peroxides ◽  
Gas Phase Reactions ◽  
Production Of Hydrogen

Gas phase reactions of hydrogen peroxide and hydrogen peroxide/methanol mixtures with air pollutants

1996 ◽  
Vol 26 (2) ◽  
pp. 2125-2132 ◽  
Author(s):  
Vladimir M. zamansky ◽  
Loc Ho ◽  
Peter M. Maly ◽  
W. Randall Seeker
Keyword(s):  
Hydrogen Peroxide ◽  
Gas Phase ◽  
Air Pollutants ◽  
Gas Phase Reactions

scholarly journals Effect of textual features and surface properties of activated carbon on the production of hydrogen peroxide from hydroxylamine oxidation

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25305-25313 ◽  
Author(s):  
Wei Song ◽  
Lin Yu ◽  
Xiaowei Xie ◽  
Zhifeng Hao ◽  
Ming Sun ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Activated Carbon ◽  
Liquid Phase ◽  
Gas Phase ◽  
Surface Properties ◽  
Textural Features ◽  
Production Of Hydrogen ◽  
Textual Features

Herein, the textural features and surface properties of activated carbon were mediated by oxidation in the gas-phase or liquid-phase.

scholarly journals Partitioning of hydrogen peroxide in gas-liquid and gas-aerosol phases

2020 ◽  
Vol 20 (9) ◽  
pp. 5513-5526 ◽  
Author(s):  
Xiaoning Xuan ◽  
Zhongming Chen ◽  
Yiwei Gong ◽  
Hengqing Shen ◽  
Shiyi Chen
Keyword(s):  
Hydrogen Peroxide ◽  
Gas Phase ◽  
Pure Water ◽  
Average Concentration ◽  
Urban Atmosphere ◽  
Hydrolysis Rate ◽  
Ambient Atmosphere ◽  
Organic Peroxides ◽  
Henry's Law ◽  
Henry’S Law

Abstract. Hydrogen peroxide (H2O2) is a vital oxidant in the atmosphere and plays critical roles in the oxidation chemistry of both liquid and aerosol phases. The partitioning of H2O2 between the gas and liquid phases, or the aerosol phase, could affect its abundance in these condensed phases and eventually the formation of secondary components. However, the partitioning processes of H2O2 in gas-liquid and gas-aerosol phases are still unclear, especially in the ambient atmosphere. In this study, field observations of gas-, liquid-, and aerosol-phase H2O2 were carried out in the urban atmosphere of Beijing during the summer and winter of 2018. The effective field-derived mean value of Henry's law constant (HAm, 2.1×105 M atm−1) was 2.5 times of the theoretical value in pure water (HAt, 8.4×104 M atm−1) at 298±2 K. The effective derived gas-aerosol partitioning coefficient (KPm, 3.8×10-3 m3 µg−1) was 4 orders of magnitude higher on average than the theoretical value (KPt, 2.8×10-7 m3 µg−1) at 270±4 K. Beyond following Henry's law or Pankow's absorptive partitioning theory, the partitioning of H2O2 in the gas-liquid and gas-aerosol phases in the ambient atmosphere was also influenced by certain physical and chemical reactions. The average concentration of liquid-phase H2O2 in rainwater during summer was 44.12±26.49 µM. In 69 % of the collected rain samples, the measured level of H2O2 was greater than the predicted value in pure water calculated by Henry's law. In these samples, 41 % of the measured H2O2 was from gas-phase partitioning, while most of the rest may be from residual H2O2 in raindrops. In winter, the level of aerosol-phase H2O2 was 0.093±0.085 ng µg−1, which was much higher than the predicted value based on Pankow's absorptive partitioning theory. The contribution of partitioning of the gas-phase H2O2 to the aerosol-phase H2O2 formation was negligible. The decomposition/hydrolysis rate of aerosol-phase organic peroxides could account for 11 %–74 % of the consumption rate of aerosol-phase H2O2, and the value depended on the composition of organic peroxides in the aerosol particles. Furthermore, the heterogeneous uptake of HO2 and H2O2 on aerosols contributed to 22 % and 2 % of the aerosol-phase H2O2 consumption, respectively.

scholarly journals Gas phase stabiliser-free production of hydrogen peroxide using supported gold–palladium catalysts

2016 ◽  
Vol 7 (9) ◽  
pp. 5833-5837 ◽  
Author(s):  
Adeeba Akram ◽  
Simon J. Freakley ◽  
Christian Reece ◽  
Marco Piccinini ◽  
Greg Shaw ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Gas Phase ◽  
Palladium Catalysts ◽  
Pd Catalysts ◽  
Production Of Hydrogen ◽  
Gold Palladium Catalysts ◽  
Supported Gold

Gas phase hydrogen peroxide is postulated to be a key intermediate in many gas phase oxidations. Using Au–Pd catalysts we show it is possible to synthesise H2O2 in the gas phase from H2 and O2.

Gas-Phase Reactions

1981 ◽  
Author(s):  
Victor N. Kondratiev ◽  
Evgeniĭ E. Nikitin
Keyword(s):  
Gas Phase ◽  
Gas Phase Reactions

scholarly journals Photocatalytic Production of Hydrogen Peroxide over Modified Semiconductor Materials: A Minireview

2020 ◽  
Vol 63 (9-10) ◽  
pp. 895-912
Author(s):  
Haiyan Song ◽  
Lishan Wei ◽  
Luning Chen ◽  
Han Zhang ◽  
Ji Su
Keyword(s):  
Hydrogen Peroxide ◽  
Semiconductor Materials ◽  
Production Of Hydrogen

Influence of Gas Mixing and Heating on Gas-Phase Reactions in GaN MOCVD Growth

2012 ◽  
Vol 1 (1) ◽  
pp. P46-P53 ◽  
Author(s):  
Ran Zuo ◽  
Haiqun Yu ◽  
Nan Xu ◽  
Xiaokun He
Keyword(s):  
Gas Phase ◽  
Gas Mixing ◽  
Gas Phase Reactions ◽  
Mocvd Growth

Gas Phase Reactions Activated by Nuclear Processes

1957 ◽  
Vol 79 (17) ◽  
pp. 4609-4616 ◽  
Author(s):  
Adon A. Gordus ◽  
John E. Willard
Keyword(s):  
Gas Phase ◽  
Gas Phase Reactions ◽  
Nuclear Processes
Sign in / Sign up

Export Citation Format

Share Document