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我省是天然沸石的产地之一,为扩大它的应用范围这里介绍一下在日本石油学会志中曾发表的一篇关于天然沸石通过 NaOH 与 NaCl 混合液简单处理后制成八面沸石的论文。用此法制成的八面沸石,其 X 光衍射谱和市售商品的 X 或 Y 型沸石一样,而且还可以用不同离子来交换,相交换性与市售沸石几乎相同。总之,用此法处理后的天然沸石,大体上与合成的沸石有其似的性质和活性。由于日本 Linde 公司的 X 或 Y 型沸石主要由八面沸石构成,广泛地被用于催化或催化载体。1.天然沸石的处理方法把天然沸石粉碎到粒径小于0.1mm、在500℃下预热8小时后,用 NaOH 和 NaCl 的混合液在95℃下剧烈搅拌8小时,随后用去离子水反复冲洗,直到洗涤水的 pH 值小于10为止。
My province is one of the natural zeolite origin, in order to expand its scope of application Here to introduce the Japanese Petroleum Institute Chi published a paper on the natural zeolite prepared by simple treatment of NaOH and NaCl mixture of faujasites. The faujasite zeolite produced by this method has the same X-ray diffraction spectrum as the commercially available X, Y-type zeolite, but can also be exchanged with different ions with almost the same exchangeability as the commercially available zeolites. In summary, natural zeolites treated by this method generally have similar properties and activities as synthetic zeolites. Since the Linde X-type or Y-type zeolite from Japan is mainly composed of faujasite, it has been widely used for catalytic or catalytic supports. 1. Treatment of Natural Zeolite The natural zeolite was pulverized to a particle size of less than 0.1 mm and preheated at 500 ° C for 8 hours, then vigorously stirred at 95 ° C for 8 hours using a mixed solution of NaOH and NaCl, followed by repeated deionized water Rinse until the pH of the wash water is less than 10.