Highly Efficient Adsorption of Organic Impurities in Industrial-Grade H<sub>2</sub>O<sub>2</sub> Using π–π Interaction
Electronic-grade H2O2 with few impurities is crucial for the preparation of semiconductor chips. The organic impurities in H2O2 produced by the anthraquinone method are difficult to completely remove. Herein, KOH-modified activated carbon (KAC) is prepared to promote the adsorption of organic impurities through copious π–π interaction. The results indicate that KAC-800 showed an excellent adsorption capacity of organic impurities. The removal rates of organic impurities in 35 wt % H2O2 and 50 wt % H2O2 can reach ∼100% and 98.2%, respectively. Besides, the adsorption process of KAC-800 was based on the pseudo-second-order adsorption isotherm and Freundlich kinetic model. Therefore, KAC-800 is an effective and suitable adsorbent for eliminating organic impurities in H2O2.
Authors
- Huiming Zeng
- Liang Lv
- Kang Shao (ORCID: https://orcid.org/0000-0002-6802-5410)
- Jianliang Zhang (ORCID: https://orcid.org/0000-0003-2494-0040)
- Haijie Ben (ORCID: https://orcid.org/0000-0003-3370-4568)
- Yulin Wang (ORCID: https://orcid.org/0000-0002-0788-2304)
- Tong Wang (ORCID: https://orcid.org/0000-0002-7907-4701)
- Yuechao Wu
- Feng Lin (ORCID: https://orcid.org/0000-0001-5837-2366)
- Xue Dang
- Jianguang Li (ORCID: https://orcid.org/0009-0009-6282-4711)
Institutions
- Quzhou University (CN)
- Zhejiang University of Technology (CN)
Publication Details
- Journal
- Industrial & Engineering Chemistry Research
- Published
- 2024-09-13
- DOI
- https://doi.org/10.1021/acs.iecr.4c02101
- Citations
- 1
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.16
Funders
- Natural Science Foundation of Zhejiang Province