Synthesis and Investigation on Stability in Different pHs and Temperatures in Zeolite A

There are many academic and industrial studies about zeolite synthesis and characterization during the last decades. The synthesis of zeolite A has been of interest of many researchers due to applications as sorbent, separator and ion-exchange in industries. One of the most important usages of this compound is its application in detergents as a builder. Zeolite A is a good substitute for sodium triphosphate (STTP) which is banned in U.S., Europe and Japan, because of its environmental problems. These applications can be good reason for investigation of its stability in different pHs and temperatures. Many methods for preparing zeolite A have been reported in literature without complete details of synthesis conditions, In this report , zeolite A was synthesis by using technical grade materials. X-ray diffraction (XRD), infrared spectroscopy (IR) and optical microscopy were used for characterization of the samples. Stability of this compound in different pHs and temperatures was investigated. XRD was also employed for studying relative crystallinity of the samples.