Study on the rapid crystallization of ETS-4 and ETS-10

✍ Scribed by Wha Jung Kim; Myung Churl Lee; Jae Churl Yoo; David T. Hayhurst

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 656 KB
• Volume: 41
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/s1387-1811(00)00275-4

✦ Synopsis

The synthesis of ETS-10 was carried out at 200°C using a 2 3 factorial method to optimize the overall composition of reaction mixture to produce pure ETS-10 within a short time. The results show that ETS-10 with a high crystallinity and well-de®ned morphology was successfully synthesized at high water content and low alkalinity within 18 h of reaction. The results also show that the eect of water on crystal size and morphology was not signi®cant. A kinetic study on ETS-10 was performed using the optimum composition and the apparent activation energy was calculated as 66.78 kJ/ mol. In addition, a kinetic study on ETS-4 was also performed and the apparent activation energy was calculated as 14.47 kJ/mol.