EMM-58 Zeolite Compositions, Syntheses, and Uses
AssigneeExxonMobil Technology and Engineering Company
InventorsAllen W. Burton, Hilda B. VROMAN, Joseph M. FALKOWSKI
Life of this patent
Estimating the term…
Abstract
An aluminosilicate zeolite may have a molar ratio of Si to Al of about 3 to about 10, a monoclinic space group C2/m with unit cell dimensions of a of 13.6 Å+/−5%, b of 21.7 Å+/−5%, c of 6.7 Å+/−5%, and β of 93°+/−3°, 12-ring pores along a c-axis having dimensions of 7 Å+/−5% by 6 Å+/−5%, and 8-ring pores along an a-axis having dimensions of 3 Å+/−5% by 3 Å+/−5%. Said aluminosilicate zeolites may be useful in hydrocarbon conversion processes, selective catalytic reduction of NOx, CO2 and/or N2 adsorption, carbonylation reactions, and the monoalkylamine and dialkylamine syntheses.
Claims12
A method comprising:
- maintaining an aqueous reaction mixture comprising a silicon atom source, an aluminum atom source, and a structure directing agent selected from the group consisting of N,N′,2-trimethylbenzimidazolium, N,N′,2-dimethylbenzimidazolium, and a combination thereof at a temperature of about 135° C. to about 180° C. to yield an aluminosilicate zeolite having (i) a molar ratio of Si to Al of about 3 to about 10 and (ii) a structure having (a) a monoclinic space group C2/m with unit cell dimensions of a of 13.6 Å+/-5%, b of 21.7 Å+/-5%, c of 6.7 Å+/-5%, and β of 93°+/−3°, (b) 12-ring pores along a c-axis having dimensions of 7 Å+/−5% by 6 Å+/−5%, and (c) 8-ring pores along an a-axis having dimensions of 3 Å+/-5% by 3 Å+/-5%.
Dependencies are inferred from the claim text.