The Synthesis of an Extra‐Large‐Pore Zeolite with Double Three‐Ring Building Units and a Low Framework Density

The great wide open: High-throughput techniques have allowed an extra-large-pore zeolite to be obtained that has an 18×12×12 ring pore system. This material (see picture) has the lowest framework density for a silica-based fully-connected zeolite, and is the first example with double three-ring units in its framework. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.