CAJ | 학술논문

以含钛电炉熔分渣提钛后的水浸液为原料,采用常压回流法和水热法分别合成了4A 分子筛。在控制硅铝比(n(SiO2)/n(Al2O3)摩尔比)为2的条件下,系统探讨了水钠比(n(H2O)/n(Na2O)摩尔比)、反应时间和温度对合成4A分子筛物相和微观形貌的影响。当控制水钠比为80且反应时间为8 h时,采用常压回流法可以制备出尺寸均一且结晶完全的4A分子筛；而采用水热法在120℃条件下,3 h即可制备得到形状规则的4A分子筛。另外,探讨了水热法不同反应温度条件下制备的分子筛对硫酸铜溶液吸附性能的影响。结果表明：反应温度为120℃条件下合成的4A分子筛对铜离子的吸附效率最高,在150 min时其吸附率可达70%。
이함태전로용분사제태후적수침액위원료,채용상압회류법화수열법분별합성료4A 분자사。재공제규려비(n(SiO2)/n(Al2O3)마이비)위2적조건하,계통탐토료수납비(n(H2O)/n(Na2O)마이비)、반응시간화온도대합성4A분자사물상화미관형모적영향。당공제수납비위80차반응시간위8 h시,채용상압회류법가이제비출척촌균일차결정완전적4A분자사；이채용수열법재120℃조건하,3 h즉가제비득도형상규칙적4A분자사。령외,탐토료수열법불동반응온도조건하제비적분자사대류산동용액흡부성능적영향。결과표명：반응온도위120℃조건하합성적4A분자사대동리자적흡부효솔최고,재150 min시기흡부솔가체70%。
4A molecular sieves were successfully synthesized from the leaching solutions of fused titanium-containing electric fur-nace molten slag by using the reflux method and the hydrothermal method, respectively. The effects of H2 O/Na2 O mole ratio, reaction time, and temperature on the crystal phase and microstructure of 4A molecular sieves were systematically investigated when keeping the SiO2/Al2 O3 mole ratio at 2. It is indicated that a 4A molecular sieve with well crystallinity and uniform size can be obtained by using the reflux method when the H2 O/Na2 O mole ratio is controlled at 80 and the reaction time is 8 h. Meanwhile, by using the hydrother-mal method, a 4A molecular sieve can also be successfully prepared when the reaction is controlled at 120℃ only for 3 h. The adsorp-tion properties for Cu2+ by 4A molecular sieves obtained at different temperatures were studied. The optimum adsorption efficiency of 70% is gained for a 4A molecular sieve synthesized at 120℃ for 150 min.