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Updated: Oct 25, 2026
Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route
Published on: April 3, 2016
3D-to-3D Topotactic Transformation in Extra-Large-Pore Pure-Silica Zeolite
Feng Jiao1,2, Zhenghan Zhang3, Jing Niu4
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun130012, P. R. China.
Abstract:
Stable silica-based extra-large-pore (ELP) zeolites are highly desirable for processing bulky molecules but remain exceedingly challenging to synthesize directly. Here, we report JU-87, a stable, fully connected pure-silica ELP zeolite formed through a 3D-to-3D topotactic condensation of an interrupted 24-membered-ring zeolite precursor (JU-86). The calcination-induced full condensation of the SiO-···HOSi defects in JU-86 yields JU-87, which features one-dimensional 18-membered-ring channels (max. dimension: 17.36 Å) lined with pocket-like cavities and contains abundant, unprecedented, highly strained three-membered-ring units. Owing to its spacious channels, JU-87 can accommodate bulky dye molecules, demonstrating its potential for the adsorption and catalytic upgrading of large substrates.
