Patent ID: 11896963
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 12:
13. The process of claim 10, where recrystallizing the ZSM-5 zeolite constituents comprises:
cooling the first mixture to a temperature of from 20° C. to 50° C.;
adjusting the pH of the first mixture to a pH of 9.0 to produce a second mixture;
stirring the second mixture for a second time period of from 10 hours to 30 hours; and
hydrothermally treating the second mixture by increasing the temperature to 100° C. and stirring for a third period of from 10 hours to 30 hours, where stirring for the second time period and hydrothermally treating the second mixture for the third period recrystallizes the zeolite constituents in the presence of the surfactant to produce the recrystallized ZSM-5 zeolite.