Xu Zhuang, Li Mengli, Shen Guowang, Chen Yuhao, Lu Dashun, Ren Peng, Jiang Hao, Wang Xugen, Dai Bin
School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China.
Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi 832000, China.
Nanomaterials (Basel). 2023 Jan 18;13(3):393. doi: 10.3390/nano13030393.
The role of solvents is crucial in catalyst preparation. With regard to catalysts prepared with activated carbon (AC) as the carrier, when water is used as a solvent it is difficult for the solution to infiltrate the AC. Because AC comprises a large number of C atoms and is a nonpolar material, it is more effective for the adsorption of nonpolar substances. Since the water and active ingredients are polar, they cannot easily infiltrate AC. In this study, the dispersion of the active component was significantly improved by optimizing the solvent, and the particle size of the active component was reduced from 33.08 nm to 15.30 nm. The specific surface area of the catalyst is significantly increased, by 10%, reaching 991.49 m/g. Under the same reaction conditions, the conversion of acetic acid by the catalyst prepared with the mixed solvent was maintained at approximately 65%, which was 22% higher than that obtained using the catalyst prepared with water as the solvent.
溶剂在催化剂制备中起着至关重要的作用。对于以活性炭（AC）为载体制备的催化剂，当使用水作为溶剂时，溶液很难渗透到AC中。由于AC包含大量的C原子，是一种非极性材料，对非极性物质的吸附更有效。由于水和活性成分是极性的，它们不容易渗透到AC中。在本研究中，通过优化溶剂显著改善了活性成分的分散性，活性成分的粒径从33.08nm减小到15.30nm。催化剂的比表面积显著增加，增加了10%，达到991.49m/g。在相同的反应条件下，用混合溶剂制备的催化剂对乙酸的转化率保持在约65%，比用水作为溶剂制备的催化剂高出22%。
