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AssigneeExxonMobil Technology and Engineering Company
InventorsTrong D. PHAM, Emiel De Smit, Michael P. Lanci, Mary S. Abdulkarim
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The present disclosure relates to a method of making aluminum-containing molecular sieves of TON framework type. The present disclosure further relates to small crystal forms of aluminum-containing molecular sieves of TON framework type, and uses thereof. It has been found that the use of imidazolium cations selected from 1,3-dimethylimidazolium cations and 1-ethyl-3-methylimidazolium (or 1-methyl-3-ethylimidazolium) cations as structure directing agents (SDAs) allows the preparation of aluminum-containing molecular sieves of TON framework type, in particular in the form of small crystals. Methods of making aluminum-containing molecular sieves of TON framework type using said SDAs are provided, along with corresponding compositions.
A method of making an aluminum-containing molecular sieve of TON framework type, comprising the steps of:
An aluminum-containing molecular sieve of TON framework type, wherein the molecular sieve is in the form of crystals having at least one of a maximal particle size of less than 500 nm and an average maximal particle size of less than 500 nm, and wherein at least 50% of the molecular sieve crystals (as vol %) have an aspect ratio (L/D) of at most 3, as determined by scanning electron microscopy (SEM).
Dependencies are inferred from the claim text.