Catalytic oxidation of harmful chlorine- and sulphur-containing VOC emissions. A study of supported Au, Pt and Cu catalysts

Thesis event information

Date and time of the thesis defence

Place of the thesis defence

Linnanmaa, auditorium L2. Remote connection: https://oulu.zoom.us/j/63277442072?pwd=VHNVVWhiWExsdEx1eUhKY0l3dmplUT09

Topic of the dissertation

Catalytic oxidation of harmful chlorine- and sulphur-containing VOC emissions. A study of supported Au, Pt and Cu catalysts

Doctoral candidate

Master of Science (Tech.) Tuomas Nevanperä

Faculty and unit

University of Oulu Graduate School, Faculty of Technology, Environmental and Chemical Engineering Research Unit

Subject of study

Environmental Engineering

Opponent

Professor Hanna Härelind, Chalmers University of Technology

Custos

Professor Riitta Keiski, University of Oulu

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Catalytic treatment of volatile organic compounds emitted from industry

In this study, new gold-containing catalyst materials were developed for treatment of chlorine- and sulphur-containing volatile organic compounds. The scope was to prepare, characterise and investigate several precious metal and metal oxide catalyst combinations in dichloromethane and dimethyldisulphide oxidation. Based on the study, it was proven that gold-containing catalysts are effective in the treatment of these organic compounds. The results of this study can be applied in designing more effective commercial environmental catalysts hence affecting positively to air quality and reduction of air pollution.

Role of the catalyst during treatment is to accelerate oxidation reactions to minimise energy consumption of the treatment. Desired oxidation products can be ensured by using selective catalysts. A favorable catalyst is also highly stable avoiding the loss of performance during treatment.

Chlorine- and sulphur-containing volatile organic compounds are emitted to the atmosphere due to human activities. Typical industrial sources are petroleum, chemical and wood processing industries and wastewater treatment plants. Especially, the chlorine-containing are very hazardous to human health and the environment. The sulphur-containing are extremely malodorous at very low concentrations – even before they cause severe threat to human health and the environment.
Last updated: 23.8.2021