Nucleation Rate Constant of Ammonium Paratungstate and Activation Energy

According to Arrhenius theory, using the method of nucleation period integral mean rate, the apparent activation energy of ammonium patatungstate (APT) crystal growth is calculated as 94.657KJ/mol. At the same time, the relational expression between APT crystal growth rate constant and temperature is concluded as kn=8.46*10¹⁴ exp (-94657/RT). The results show that the increasing rate of APT nucleation rate is bigger than of APT crystal growth rate as temperature increasing and the granularity of crystal product is fine.

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