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珍珠岩是一种进行沸石化的有用原料,其原理和由浮岩制沸石非常相似。本文表明,价值较低的沸石(相当于天然沸石)和价值较高的沸石(相当于合成沸石)两种产品都能够通过珍珠岩进行工业生产。本文还报导了这些产品目前的各种应用情况及其发展前景。由于最近对沸石的需求在急剧增长,因此对以价值较低的天然铝硅酸盐为原料合成沸石的兴趣在不断的增长。一方面,可以用纯的SiO_2和Al_2O_3作原料在碱性溶液进行沸石的水热合成,另一方面,世界上许多地区(例如,意大利的波佐利、西德的艾弗尔、加利福尼亚的
Perlite is a useful material for zeolitization and its principle is very similar to that of pumice. This article shows that both the less valuable zeolite (equivalent to natural zeolite) and the more valuable zeolite (equivalent to synthetic zeolite) can be produced commercially by perlite. This article also reports on the various current applications and developments of these products. With the recent dramatic increase in demand for zeolites, there is a growing interest in the synthesis of zeolites from the less valuable natural aluminosilicates. On the one hand, pure SiO 2 and Al 2 O 3 can be used as raw materials for the hydrothermal synthesis of zeolites in alkaline solutions. On the other hand, many parts of the world (eg, Pozzuoli, Italy, Eifel, West Germany,