研究目的
Investigating the selective conversion of methanol to dimethoxymethane (DMM) using TiO2/zeolite bifunctional catalysts at room temperature, focusing on the role of Br?nsted acidity.
研究成果
The study successfully demonstrated the selective conversion of methanol to DMM at room temperature using TiO2/zeolite bifunctional catalysts, highlighting the significant role of Br?nsted acid sites in enhancing selectivity. The findings suggest potential applications in designing more efficient and environmentally friendly catalytic processes for DMM production.
研究不足
The study is limited to room temperature conditions for photocatalytic reactions. The influence of higher temperatures and different reactor configurations on the selectivity and conversion efficiency was not extensively explored.
1：Experimental Design and Method Selection:
The study involved the preparation of TiO2/zeolite bifunctional catalysts by solid state dispersion of TiO2 with various materials. The photocatalytic activity was evaluated under UV irradiation at room temperature.
2：Sample Selection and Data Sources:
Various zeolites and oxides were used as supports, including SiO2, LZY-54, LZY-64, ZSM-5, Beta, and γ-alumina.
3：List of Experimental Equipment and Materials:
A Nicolet Magna 550-FT-IR spectrometer for IR spectroscopy, a modified operando IR cell for photocatalytic reactions, and a Pfeiffer Omnistar mass spectrometer for gas phase analysis.
4：Experimental Procedures and Operational Workflow:
The catalysts were activated under synthetic air, and methanol photooxidation was performed under controlled conditions. The reaction products were analyzed by IR spectroscopy and mass spectrometry.
5：Data Analysis Methods:
The selectivity and conversion were calculated using calibration curves for the different products involved in the reaction.
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