The ultramicro 4A-zeolite is synthesized with the fly ash by melting-hydrothermal method,and compared with common A-zeolite by XRD,SEM and laser granulometric analysis.

• 以粉煤灰为原料,采用加碱熔融-水热合成法制备超微4A沸石,并采用XRD、SEM和激光粒度分析等手段将合成结果与常规4A沸石进行了对比。