Assertion: chabazite's al ratio | /r/HasProperty | 12>si/al>4
Facets:
Source sentences:
text: It is therefore advantageous to classify the zeolitic materials based on their composition: 1) purely siliceous materials (Si/Al→∞), 2) high‐silica zeolites (Si/Al>12), 3) zeolites with intermediate Si/Al ratios (12>Si/Al>4), and 4) Al‐rich zeolites (Si/Al<4).