Related Experiment Video
Updated: Apr 17, 2026
Organic Structure-directing Agent-free Synthesis for *BEA-type Zeolite Membrane
Published on: February 22, 2020
Charge density mismatch synthesis of MEI- and BPH-type zeolites in the TEA(+)-TMA(+)-Li(+)-Sr(2+)
Min Bum Park1, Sang Hyun Ahn, Nak Ho Ahn
1Center for Ordered Nanoporous Materials Synthesis, Department of Chemical Engineering and School of Environmental Science and Engineering, POSTECH, Pohang 790-784, Korea. sbhong@postech.ac.kr.
Abstract:
Nanocrystalline MEI- and BPH-type zeolites, denoted as PST-11 and PST-12, respectively, have been synthesized using both tetraethylammonium and tetramethylammonium ions, the two simplest alkylammonium species, in the presence of Li(+) and Sr(2+). PST-12 formation is the first example of a combination of forced and multiple cooperative structure-directions in the charge density mismatch synthesis of zeolites.
