scholarly journals THE REDUCTION OF VANADIC ACID IN CONCENTRATED SULFURIC ACID SOLUTION BY HYDROGEN PEROXIDE AND BY PERSULFATES.

1912 ◽  
Vol 34 (3) ◽  
pp. 274-276 ◽  
Author(s):  
J. R. Cain ◽  
J. C. Hostetter
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Vanadic Acid ◽  
Concentrated Sulfuric Acid

Synchronous Current Oscillations in Electrochemical Reduction Reactions on Two Platinum Electrodes in Sulfuric Acid Solution Containing Hydrogen Peroxide

1996 ◽  
Vol 25 (6) ◽  
pp. 463-464 ◽  
Author(s):  
Yoshiharu Mukouyama ◽  
Hayato Hommura ◽  
Toshihiko Matsuda ◽  
Shinji Yae ◽  
Yoshihiro Nakato
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Acid Solution ◽  
Electrochemical Reduction ◽  
Sulfuric Acid Solution ◽  
Platinum Electrodes ◽  
Reduction Reactions ◽  
Current Oscillations

scholarly journals Evaluation of Corrosion Resistant of Amorphous Fe-Ni-Cr-Ta Alloys in Hot Concentrated Sulfuric Acid Solution

2000 ◽  
Vol 64 (5) ◽  
pp. 367-370
Author(s):  
Hideyuki Ogishi ◽  
Takeshi Suemitsu ◽  
Akira Takashima ◽  
Hyoe Ono ◽  
Hidemi Ukai ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Corrosion Resistant ◽  
Concentrated Sulfuric Acid

Photolysis of cerium/thallous solutions. Enhanced reduction rate in the presence of titanium dioxide

1983 ◽  
Vol 36 (1) ◽  
pp. 191 ◽  
Author(s):  
RW Matthews
Keyword(s):  
Hydrogen Peroxide ◽  
Titanium Dioxide ◽  
Sulfuric Acid ◽  
Acid Solution ◽  
Hydroxyl Radical ◽  
Sulfuric Acid Solution ◽  
Reduction Rate ◽  
Aqueous Suspensions ◽  
Dilute Sulfuric Acid

Aqueous suspensions of titanium dioxide (anatase) in dilute sulfuric acid solution containing ceric and thallous ions have been photolysed. The presence of TiO2 enhances the reduction rate by at least 40%. The observations are consistent with the formation of an additional yield of oxidizing radicals in the presence of the TiO2 which react with the same characteristics as the hydroxyl radical. The additional oxidizing radicals generated in the presence of TiO2 cannot be formed via hydrogen peroxide as an intermediate.

Long-Range-Ordered Anodic Porous Alumina with Reduced Hole Interval Formed in Highly Concentrated Sulfuric Acid Solution

2006 ◽  
Vol 45 (No. 14) ◽  
pp. L406-L408 ◽  
Author(s):  
Hideki Masuda ◽  
Mitsutaka Nagae ◽  
Takuya Morikawa ◽  
Kazuyuki Nishio
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Long Range ◽  
Sulfuric Acid Solution ◽  
Porous Alumina ◽  
Anodic Porous Alumina ◽  
Concentrated Sulfuric Acid

scholarly journals Effects of Additives (Hydrogen Peroxide and Ethylene Glycol) and Temperature on the Leaching of Copper from Chalcopyrite by Sulfuric Acid Solution

2016 ◽  
Vol 25 (5) ◽  
pp. 36-43
Author(s):  
So-Hyun Kim ◽  
Jong-Gwan Ahn ◽  
Shun-Myung Shin ◽  
Kyeong-Woo Chung
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Ethylene Glycol ◽  
Acid Solution ◽  
Sulfuric Acid Solution

scholarly journals Hydrogen peroxide formation on several carbon materials in sulfuric acid solution

TANSO ◽  
2010 ◽  
Vol 2010 (244) ◽  
pp. 143-146 ◽  
Author(s):  
Taro Kinumoto ◽  
Junichi Nakamura ◽  
Kenji Kikuchi ◽  
Zempachi Ogumi
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Carbon Materials ◽  
Peroxide Formation ◽  
Hydrogen Peroxide Formation

A Simple and Novel Colorimetric Optimized Assay for Determination of Hydrogen Peroxide Concentration Under Oxidative Stress Conditions

2020 ◽  
Vol 16 (2) ◽  
pp. 112-118
Author(s):  
Anahita K. Masooleh ◽  
Asadollah Ahmadikhah
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Vanadium Pentoxide ◽  
Pyricularia Oryzae ◽  
Stress Conditions ◽  
Detection Range

Background: Reactive oxygen species are formed through the electron transfer reactions in the mitochondria and chloroplasts and rapidly converted to H2O2.Therefore, H2O2 as a more stable ROS can be considered as an indicator of cellular stress and it can be used in a steady state to monitor intracellular stress level. In this regard, the increasing use of various nanoparticles, most of which are associated with biological systems, are essential to be studied for their possible adverse effects. We measured the concentration of hydrogen peroxide in samples collected before and after the treatment with silver nanoparticles by a novel method and optimized this method for the living tissue. Methods: In this study, we evaluated the endogenous H2O2 production from Pyricularia oryzae tissue under normal and stress conditions (such as after treatment with nanoparticles) by spectrophotometric assay. The method used is based on instant reaction of hydrogen peroxide with vanadium pentoxide in sulfuric acid solution, forming a peroxovanadate complex that has a maximum absorption at 454 nm. This method was also compared with other methods. Results: The results of this method compared with other methods in the same tissue showed that the method is simple, inexpensive and more efficient, and the complex is stable for several hours and can be used for a variety of H2O2 concentrations. Also, the detection range of the mentioned method equals with high-sensitivity methods such as available commercial kits. Furthermore, this method can also measure higher values of H2O2. Conclusion: The optimized methods for measuring the H2O2 concentration with vanadium pentoxide in sulfuric acid solution by the colorimetric method are simple, efficient, rapid, accurate, cost-effective and do not have problems of other methods. The measurements using this method in Pyricularia oryzae under oxidative stress showed that the created oxidative stress caused by the use of silver nanoparticles increased H2O2 in fungal tissue. H2O2 is the SOD reaction product that is later decomposed by CAT. This method is able to measure H2O2 in different ranges and under normal and stress conditions which are indicative of antioxidant defense. Therefore, we recommend it to the researchers in similar conditions.

Electrically Conductive Composite of Polyaniline and Poly(p-Phenylene-Terephthalamide)

1989 ◽  
Vol 173 ◽  
Author(s):  
Xian-Tong Bi ◽  
C. Wang ◽  
J. S. Bao
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Liquid Crystalline ◽  
Conductive Polymer ◽  
Electrically Conductive ◽  
Electrical Conductivities ◽  
Concentrated Sulfuric Acid ◽  
Electrically Conductive Composite ◽  
Poly Aniline

ABSTRACTThe improvement of the processibility and mechanical properties of poly-aniline (PAn) by processing a concentrated sulfuric acid solution of the mixture of chemically prepared conductive PAn powders and poly(p-phenylene-terephthalamide) (PPTA) in different weight ratios are presented.The concentrated sulfuric acid solution of PAn and PPTA were processed to films and threads, they are liquid crystalline conductive polymer composites, the electrical conductivities of the composites are between 10−4 -10−1 s/cm.PAn enhanced the tensile strength of PPTA, but does not effect the elongation. The morphology of the PPTA/PAn composite surfaces are fiberlike texture.

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