Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6971672 | Journal of Hazardous Materials | 2014 | 9 Pages |
Abstract
Treatment of liquid crystal has important significance for the environment protection and human health. This study proposed a hydrothermal process to decompose the liquid crystal of 4-octoxy-4â²-cyanobiphenyl. Experiments were conducted with a 5.7 mL stainless tube reactor and heated by a salt-bath. Factors affecting the decomposition rate of 4-octoxy-4â²-cyanobiphenyl were evaluated with HPLC. The decomposed liquid products were characterized by GC-MS. Under optimized conditions i.e., 0.2 mL H2O2 supply, pH value 6, temperature 275 °C and reaction time 5 min, 97.6% of 4-octoxy-4â²-cyanobiphenyl was decomposed into simple and environment-friendly products. Based on the mechanism analysis and products characterization, a possible hydrothermal decomposition pathway was proposed. The results indicate that hydrothermal technology is a promising choice for liquid crystal treatment.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
Xuning Zhuang, Wenzhi He, Guangming Li, Juwen Huang, Shangming Lu, Lianjiao Hou,