Delaminated layered zeolite precursors and method of preparing same without sonication

US11389788B2 · kind B2 · utility

Assignees

• CHEVRON U.S.A. INC. · US
• The Regents of the University of California · US

Inventors

• Alexander Katz · Richmond, US
• Alexander Okrut · San Francisco, US
• Martina Aigner · Berkeley, US
• Xiaoying Ouyang · San Ramon, US
• Stacey I. Zones · San Francisco, US

Key dates

• Filing date: Feb 14, 2019
• Grant date: Jul 19, 2022
• Expiry date: Feb 22, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2002/72
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Provided is a scalable delamination of a SSZ-70 framework zeolite, without the need for sonication, which has been previously made difficult by the charged nature of the imidazolium structure-directing agents that are required for zeolite synthesis. The method comprises contacting a B-SSZ-70 zeolite precursor with a zinc source such as zinc nitrate and a fluoride source.