Pd–Au Bimetal Supported on Rutile–TiO2for Selective Synthesis of Hydrogen Peroxide by Oxidation of H2with O2under Atmospheric Pressure

2007 ◽  
Vol 36 (7) ◽  
pp. 878-879 ◽  
Author(s):  
Tatsumi Ishihara ◽  
Yuiko Hata ◽  
Yohei Nomura ◽  
Kenji Kaneko ◽  
Hiroshige Matsumoto
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Selective Synthesis

Enhanced Long-Term Color Stability of Teeth Treated with Hydrogen Peroxide and Non-Thermal Atmospheric Pressure Plasma Jets

2014 ◽  
Vol 11 (11) ◽  
pp. 1010-1017 ◽  
Author(s):  
Seoul Hee Nam ◽  
Hyun Wook Lee ◽  
Jin Woo Hong ◽  
Hae June Lee ◽  
Gyoo Cheon Kim
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Color Stability ◽  
Plasma Jets ◽  
Pressure Plasma

ChemInform Abstract: Selective Synthesis of Sulfoxides and Sulfones from Sulfides Using Silica Bromide as the Heterogeneous Promoter and Hydrogen Peroxide as the Terminal Oxidant.

ChemInform ◽  
2015 ◽  
Vol 46 (12) ◽  
pp. no-no
Author(s):  
Behrooz Maleki ◽  
Saba Hemmati ◽  
Alireza Sedrpoushan ◽  
Samaneh Sedigh Ashrafi ◽  
Hojat Veisi
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Synthesis

scholarly journals COHERENT SYNCHRONIZATION OF PYRIDINE DIMERIZATION REACTIONS AND DECOMPOSITION OF “GREEN OXIDANTS” – H2O2 AND N2O

2021 ◽  
Vol 0 (4) ◽  
pp. 6-11
Author(s):  
I.T. Nagieva ◽  
◽  
N.I. Ali-zadeh ◽  
T.М. Nagiev ◽  
◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Nitrous Oxide ◽  
Gas Phase ◽  
Atmospheric Pressure ◽  
Raw Materials ◽  
Oxidizing Agent ◽  
Optimal Conditions ◽  
Pyridine Bases ◽  
Pharmaceutical Industries ◽  
Oxidation By Hydrogen Peroxide

In recent years, hydrogen peroxide and nitrous oxide (1) "green oxidants" – have attracted much attention of researchers as a selective oxidizing agent for the catalytic oxidation of pyridine bases. In this regard, the reaction of pyridine oxidation by hydrogen peroxide and nitrous oxide under homogeneous conditions, in the gas phase, without the use of catalysts, at atmospheric pressure, has been experimentally investigated. Areas of selective oxidation of pyridine with hydrogen peroxide and nitrous oxide have been established, and optimal conditions have been found for obtaining valuable raw materials required in the petrochemical, chemical, and pharmaceutical industries

scholarly journals Analysis of Plasma-activated Medium (PAM) in aqueous solution by an Atmospheric Pressure Plasma Jet (APPJ)

2018 ◽  
Vol 197 ◽  
pp. 02013 ◽  
Author(s):  
Andi Wibowo Kinandana ◽  
Sumariyah Sumariyah ◽  
Muhammad Nur
Keyword(s):  
Hydrogen Peroxide ◽  
Species Composition ◽  
Exposure Time ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Reactive Species ◽  
Atmospheric Pressure Plasma Jet ◽  
Liquid Media ◽  
Pressure Plasma

Plasma-activated medium (PAM) has been produced by exposing a liquid media to Argon plasma jet. The jet plasma exposure to liquid media has produced reactive Oxygen species (ROS) in liquid phase. This study aims to determine the number of reactive species in plasma-activated medium. An atmospheric pressure plasma jet (APPJ) was generated with a dielectric barrier discharge (DBD) column by AC high voltage. Some parameters varied including exposure time; i.e. 5, 10, 15, 20, 25, and 30 min; and the distance between reactor and active media; i.e. 1, 2 and 3 cm. Some analysis conducted including variation of exposure times, the distances of reactor to PAM which affect produced concentration, and the reactive species composition in plasma-activated medium. In addition, temperature characteristics, pH levels, dissolved ozone and dissolved hydrogen peroxide concentrations were also observed in this study. The results showed that increased exposure time resulted in decreased pH, increased temperature and increased concentrations of ozone and hydrogen peroxide. The maximum reactive species composition was obtained at the distance between reactor and plasma-activated medium of 2 cm. Maximum reactive species composition obtained in this study has temperature of 29-30 Celsius degrees; pH 3.5; dissolved ozone 2.97 ppm; and Hydrogen Peroxide 215 ppm.

scholarly journals Determination of stigmasterol hydroperoxides using high-performance liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization

2004 ◽  
Vol 22 (SI - Chem. Reactions in Foods V) ◽  
pp. S144-S146 ◽  
Author(s):  
S. Kemmo ◽  
V. Ollilainen ◽  
Lampi A-M ◽  
V. Piironen
Keyword(s):  
Mass Spectrometry ◽  
Hydrogen Peroxide ◽  
High Performance Liquid Chromatography ◽  
Atmospheric Pressure ◽  
High Performance ◽  
Chemical Ionization ◽  
Atmospheric Pressure Chemical Ionization ◽  
Liquid Chromatography Mass Spectrometry ◽  
Pressure Chemical Ionization ◽  
Pressure Chemical

A new specific method using high-performance liquid chromatography-mass spectrometry (HPLC-MS) for the detection of stigmasterol hydroperoxides was developed. Hydroperoxides of stigmasterol were obtained by photo-oxidation (90 min) in the presence of methylene blue as a sensitizer. The separation was performed using normal-phase chromatographic conditions. The MS detection was carried out with an ion-trap mass spectrometer using atmospheric pressure chemical ionization (APCI) and positive ion mode. Stigmasterol hydroperoxides were seen to produce no protonated molecular ions [M + H]<sup>+</sup> but instead fragments representing loss of one or two water molecules [M – H<sub>2</sub>O + H]<sup>+</sup>, [M – 2H<sub>2</sub>O + H]<sup>+</sup>, loss of hydrogen peroxide [M – H<sub>2</sub>O<sub>2</sub> + H]<sup>+</sup> or loss of hydrogen peroxide and water [M – H<sub>2</sub>O<sub>2</sub> – H<sub>2</sub>O + H]<sup>+</sup>. The results showed that positional isomers of hydroperoxides had different fragmentation patterns and relative ion abundances. On the other hand anomeric isomers had more similar fragmentation. As a conclusion the method developed showed to be a useful tool for investigation the oxidation mechanism of sterols.

Hydrogen peroxide in lactate solutions irradiated by non-equilibrium atmospheric pressure plasma

2020 ◽  
Author(s):  
Yang Liu ◽  
Kenji Ishikawa ◽  
Camelia Miron ◽  
Hiroshi Hashizume ◽  
Hiromasa Tanaka ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Pressure Plasma ◽  
Non Equilibrium

scholarly journals Tailoring the Chemistry of Plasma-Activated Water Using a DC-Pulse-Driven Non-Thermal Atmospheric-Pressure Helium Plasma Jet

Plasma ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 127-137 ◽  
Author(s):  
Oh ◽  
Szili ◽  
Hatta ◽  
Ito ◽  
Shirafuji
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Pulse Width ◽  
Plasma Jet ◽  
Plasma Jets ◽  
Helium Plasma ◽  
Uv Absorption Spectroscopy ◽  
Pulse Polarity ◽  
Plasma Activated Water

We investigate the use of a DC-pulse-driven non-thermal atmospheric-pressure He plasma jet in the regulation of hydrogen peroxide (H2O2), nitrite (NO2−), nitrate (NO3−), and oxygen (O2) in deionized (DI) water. The production of these molecules is measured by in situ UV absorption spectroscopy of the plasma-activated water (PAW). Variations in the pulse polarity and pulse width have a significant influence on the resultant PAW chemistry. However, the trends in the concentrations of H2O2, NO2−, NO3−, and O2 are variable, pointing to the possibility that changes in the pulse polarity and pulse width might influence other plasma variables that also impact on the PAW chemistry. Overall, the results presented in this study highlight the possibility of using DC-pulse-driven plasma jets to tailor the chemistry of PAW, which opens new opportunities for the future development of optimal PAW formulations across diverse applications ranging from agriculture to medicine.

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