The organic modification of nano-scale TiO2 and the effect factors were studied by using dodecanoic acid and hexadecanoic acid as modifier.The results showed that the optimal modification time was 1.5h and the optimal...The organic modification of nano-scale TiO2 and the effect factors were studied by using dodecanoic acid and hexadecanoic acid as modifier.The results showed that the optimal modification time was 1.5h and the optimal temperature was 100℃.The surfaces of TiO2 particles were modified from hydrophilic to hydrophobic.The modification effect of hexadecanoic acid was better than that of dodecanoic acid.展开更多
采用5因素2水平的部分析因实验设计对十二酸氯化合成α-氯代十二酸的工艺进行优化,方差分析反应温度、反应时间、催化剂用量、Cl2流量和O2流量及其交互作用的统计重要度。通过线性模型回归和响应曲面分析各因素对α-氯代十二酸收率的影...采用5因素2水平的部分析因实验设计对十二酸氯化合成α-氯代十二酸的工艺进行优化,方差分析反应温度、反应时间、催化剂用量、Cl2流量和O2流量及其交互作用的统计重要度。通过线性模型回归和响应曲面分析各因素对α-氯代十二酸收率的影响规律,获得浓硫酸催化合成α-氯代十二酸的最佳实验条件为:十二酸20 g,反应温度135℃,反应3 h,催化剂用量为10%,Cl2流量为100 m L/min,O2流量为50 m L/min。在最优条件下,α-氯代十二酸的收率为96.0%。展开更多
文摘The organic modification of nano-scale TiO2 and the effect factors were studied by using dodecanoic acid and hexadecanoic acid as modifier.The results showed that the optimal modification time was 1.5h and the optimal temperature was 100℃.The surfaces of TiO2 particles were modified from hydrophilic to hydrophobic.The modification effect of hexadecanoic acid was better than that of dodecanoic acid.
文摘采用5因素2水平的部分析因实验设计对十二酸氯化合成α-氯代十二酸的工艺进行优化,方差分析反应温度、反应时间、催化剂用量、Cl2流量和O2流量及其交互作用的统计重要度。通过线性模型回归和响应曲面分析各因素对α-氯代十二酸收率的影响规律,获得浓硫酸催化合成α-氯代十二酸的最佳实验条件为:十二酸20 g,反应温度135℃,反应3 h,催化剂用量为10%,Cl2流量为100 m L/min,O2流量为50 m L/min。在最优条件下,α-氯代十二酸的收率为96.0%。