Temperature-controlled, two-stage synthesis of ZSM-5 zeolite nanoparticles with Al atoms tetrahedrally coordinated in the framework

• Published in: Microporous and mesoporous materials Vol. 270; pp. 200 - 203
• Main Authors: Deguchi, Makiko, Iyoki, Kenta, Anand, Chokkalingam, Yanaba, Yutaka, Yoshikawa, Takeshi, Okubo, Tatsuya, Wakihara, Toru
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01-11-2018
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2018.05.009

Herein, we demonstrate a novel strategy of two-stage synthesis for the ZSM-5 nanoparticles that have tetrahedrally coordinated Al atoms in their framework. The particle size is significantly decreased at low temperatures during the synthesis; however, high temperatures are required for the successful incorporation of the Al atoms into the zeolite framework. Because of the rapid heating and cooling of the specially-designed tubular reactor with high thermal conductivity, suppression of the Ostwald ripening and incorporation of Al into the framework are simultaneously accomplished.
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•A novel two-stage synthesis strategy for ZSM-5 nanoparticles was demonstrated.•Crystal growth was suppressed in nanoparticle formation step at low temperature.•Al atoms were introduced into framework during subsequent high temperature step.