The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2019
Filed:
May. 01, 2017
Saudi Arabian Oil Company, Dhahran, SA;
Ke Zhang, Stoneham, MA (US);
Sergio Fernandez, Somerville, MA (US);
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
Methods for producing mesoporous beta zeolites from parent beta zeolites having a Si/Al molar ratio of at least 10 comprise selecting a target average mesoporous size between 2 nm and 8 nm for the parent beta zeolites, selecting a pore directing agent (PDA) based on the target average mesopore size, where a non-ionic surfactant, a small cationic surfactant has a molecular weight of greater than 100 grams/mole, or both may be selected as the PDA when the target average mesopore size is at least 5 nm, and a large cationic surfactant having a molecular weight of less than 100 grams/mole may be selected as the PDA when the target average mesopore size is less than 5 nm. The method further comprises adding the selected PDA to an alkaline solution to form a PDA-base mixture, and adding the parent beta zeolites to the PDA-base mixture to produce the mesoporous beta zeolites.