Back to results
US 12,037,255 B2Granted
Zeolite syntheses using diquaternary structure directing agents
AssigneeExxonMobil Technology and Engineering Company
InventorsRoss Mabon, Allen W. Burton, Hilda B. Vroman, Simon C. Weston
Life of this patent
Estimating the term…
Abstract
A method can include heating an aqueous reaction mixture comprising a silicon source and a boron source and/or an aluminum source in the presence of a diquaternary structure directing agent to a temperature of at least 75° C. to produce a zeolite. A composition can include a borosilicate zeolite, an aluminosilicate zeolite, or an aluminoborosilicate zeolite having a framework symmetry of C2/m and a unit cell with measurements of a of 3.5 Å to 4.5 Å, b of 20.1 Å to 21.1 Å, c of 15.5 to 16.5 Å, and β of 97° to 98°.
Claims14
A method comprising:
- heating an aqueous reaction mixture comprising (a) a silicon source and (b) a boron source and/or an aluminum source in the presence of a structure directing agent to a temperature of at least 75° C. to produce a zeolite, wherein the structure directing agent is represented by Formula 1:
- wherein
- n is 1 or 2;
- each of R1 and R2 is independently methyl or ethyl, or R1 and R2 are joined to form a pyrrolidinium or piperidinium ring;
- R3 is methyl or ethyl;
- and
- X− is OH−, F−, Cl−, Br−, or I−.
4 more elements
Dependencies are inferred from the claim text.