1. Oxidative Synthesis of Acid Blue 7 Dye Catalyzed by CuO/Silicotungstic Acid in Water-Phase.
- Author
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Nomoto, Akihiro, Okada, Tomoya, Yamamoto, Yuki, Kuroda, Shota, Marui, Kuniaki, Yamamoto, Mika, Tsujimoto, Hidetaka, Ueshima, Michio, Nishigahana, Tamotsu, Itoh, Keiji, Kobata, Gohei, Kodama, Shintaro, and Ogawa, Akiya
- Subjects
CATALYTIC oxidation ,LEAD oxides ,COPPER oxide ,OXIDIZING agents ,MANGANESE oxides ,HYDROGEN peroxide - Abstract
A catalytic oxidation reaction for Acid Blue 7 dye synthesis was evaluated in water. Without lead oxide or manganese oxide derivatives as oxidants, polyoxometalate catalysts were investigated to reduce the usage of harmful heavy metal. A catalyst was prepared by mixing silicotungstic acid with copper oxide, and aqueous hydrogen peroxide (30%) was used as an oxidizing agent. This reaction proceeded to produce Acid Blue 7 from the corresponding leuco acid after 45 min at 95 °C and was viable for a 10 g-scale synthesis. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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