用四甲基氯化铵(TMAC)和十八烷基三甲基氯化铵(No Ke 1831)复合改性剂对钙基膨润土进行有机化改性,制得有机改性膨润土。研究了反应时间、反应温度、复合改性剂用量及其配比对改性膨润土层间距的影响,结果表明,反应时间为1 h、反应温度...用四甲基氯化铵(TMAC)和十八烷基三甲基氯化铵(No Ke 1831)复合改性剂对钙基膨润土进行有机化改性,制得有机改性膨润土。研究了反应时间、反应温度、复合改性剂用量及其配比对改性膨润土层间距的影响,结果表明,反应时间为1 h、反应温度为60℃、改性剂用量为0.2 g、TMAC和No Ke 1831的摩尔比为1∶4时改性最佳。利用傅里叶变换红外光谱仪和X射线衍射仪对样品进行表征,证明了复合改性剂成功插入膨润土的晶层间。展开更多
Under the conditions of tetramethyl ammonia chloride (TMAC) used as starting material, Ti-based Dimensionally Stable Anode (DSA), stainless steel used as cathode and Nafion 900 cation membrane as cell diaphragm, this ...Under the conditions of tetramethyl ammonia chloride (TMAC) used as starting material, Ti-based Dimensionally Stable Anode (DSA), stainless steel used as cathode and Nafion 900 cation membrane as cell diaphragm, this paper studies the synthesis of tetramethyl ammonium hydroxide (TMAH) by cell diaphragm electrolytic method, examining not only the effects of current density, concentration of starting material and cell temperature, on the product purity and current efficiency, but also the effects of electrolyte circulation rate on the service life of Ti-based DSA. The experiment puts forward an optimum processing condition, and experimental findings show that preparing TMAH by using this technique can obtain a current efficiency 74.7% and get product with a purity greater than 99.9%.展开更多
文摘用四甲基氯化铵(TMAC)和十八烷基三甲基氯化铵(No Ke 1831)复合改性剂对钙基膨润土进行有机化改性,制得有机改性膨润土。研究了反应时间、反应温度、复合改性剂用量及其配比对改性膨润土层间距的影响,结果表明,反应时间为1 h、反应温度为60℃、改性剂用量为0.2 g、TMAC和No Ke 1831的摩尔比为1∶4时改性最佳。利用傅里叶变换红外光谱仪和X射线衍射仪对样品进行表征,证明了复合改性剂成功插入膨润土的晶层间。
文摘Under the conditions of tetramethyl ammonia chloride (TMAC) used as starting material, Ti-based Dimensionally Stable Anode (DSA), stainless steel used as cathode and Nafion 900 cation membrane as cell diaphragm, this paper studies the synthesis of tetramethyl ammonium hydroxide (TMAH) by cell diaphragm electrolytic method, examining not only the effects of current density, concentration of starting material and cell temperature, on the product purity and current efficiency, but also the effects of electrolyte circulation rate on the service life of Ti-based DSA. The experiment puts forward an optimum processing condition, and experimental findings show that preparing TMAH by using this technique can obtain a current efficiency 74.7% and get product with a purity greater than 99.9%.
