Synthesis of Zeolite-X from Waste Metals
Synthesis of Zeolite-X from Waste Metals
复制标题
DOI：
10.2355/isijinternational.49.1644
复制
发表时间：
2009-01-01
影响因子：
1.8
通讯作者：
Akiyama, Tomohiro
中科院分区：
文献类型：
--
作者：
Hiraki, Takehito;Nosaka, Atsushi;Akiyama, Tomohiro
本文介绍了利用废金属合成x沸石的方法；在此合成中，硅泥和铝渣中的AI(OH)3分别在NaOH溶液中溶解生成氢气，然后按所需的摩尔比混合合成沸石x；重复利用残液作为原料，节约了Si和Na源。在合成过程中，考察了残液循环使用对分子筛性能的影响，并与Al(OH)(3)、Si、NaOH等试剂合成的产物进行了比较。虽然原始原料为工业废料，但所有产品的XRD谱图、Si/Al摩尔比（1.0-1.5）、BET表面积（500-600 m(2)/g）均与市产产品相同。经过三次循环使用，残液的使用提高了硅的利用率（21.4%）和钠的利用率（7.8%）。实验验证了x沸石的逆向制备。
This paper describes the synthesis of zeolite-X from waste metals; in this synthesis, silicon sludge and AI(OH)3 from aluminum dross are separately solved in NaOH solution, leading to the generation of hydrogen, and then mixed with the desired molar ratio to synthesize zeolite-X; and residual liquid was repeatedly used as raw material to save Si and Na sources. During the synthesis, the effect of the cyclic use of residual liquid on the property of zeolite was examined and it was compared with the product synthesized from reagents of Al(OH)(3), Si, and NaOH. Although the original raw materials used were industrial wastes, all products showed the same XRD patterns, Si/Al molar ratio (1.0-1.5), and BET surface area (500-600 m(2)/g) as the commercially available product. The use of the residual liquid increases the utilization ratio-21.4 mol% in Si and 7.8 mol% in Na-after three times of cyclic use. Inverse manufacturing of zeolite-X was experimentally validated.