✍ Scribed by J García-Martínez; D Cazorla-Amorós; A Linares-Solano
No coin nor oath required. For personal study only.
The present study is devoted to the transformation of conformed ashes to zeolites by hydrothermal synthesis. A wide range of experimental conditions was tested to prepare selectively zeolites with different structures. Four different zeolites were synthesised: Na‐P1, analcime, cancrinite and sodalite. Stabilisation of the cancrinite phase was achieved by modification of the silica/alumina ratio of the synthesis mixture. The transformation is not restricted to the external surface of the conformed ashes, on the contrary, different techniques have shown that a homogeneous transformation is produced and its yield does not decrease due to the use of a preconformed material. The main contribution of the proposed method is that the final zeolitic material is already compacted and does not require any conformation step or the use of a binder.
© 2002 Society of Chemical Industry
📜 SIMILAR VOLUMES
The amount of ash, and its hazardous impact on the environment, produced from the coal ®red thermal power plants is continuously increasing. This poses a very challenging task of safe handling, proper disposal and utilisation of the ash. A very common method of disposal of the ash is the wet disposa
## Abstract Pure zeolites can be synthesised from silica extracted from fly ash by alkaline leaching. If the process is optimised the solid residue arising from this extraction may also contain a relatively high content of zeolitic material mixed with residual fly ash components. Both the pure and