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:
Jan. 30, 2024
Filed:
Oct. 24, 2019
Pacific Industrial Development Corporation, Ann Arbor, MI (US);
De Gao, Troy, MI (US);
Yunkui Li, Ann Arbor, MI (US);
David Shepard, Canton, MI (US);
Jeffery Lachapelle, Northville, MI (US);
Wei Wu, Ann Arbor, MI (US);
Pacific Industrial Development Corporation, Ann Arbor, MI (US);
Abstract
A method of forming an SSZ-13 zeolite in a hydrothermal synthesis yields an SSZ-13 zeolite that exhibits a silica to alumina (SiO:AlO) molar ratio (SAR) that is less than 16:1; has a morphology that includes one or more of cubic, spheroidal, or rhombic particles with a crystal size that is in the range of about 0.1 micrometer (μm) to 10 μm. This SSZ-13 also exhibits a Brönsted acidity that is in the range of 2.0 mmol/g to 3.4 mmol/g as measured by ammonia temperature programmed desorption. A catalyst formed by substituting a metal into the framework of the zeolite provides for low temperature light-off of the NOx conversion reactions, while maintaining substantial performance at higher temperatures demonstrating hydrothermal stability.