High surface area layered double hydroxides

US10040695B2 · kind B2 · utility

Assignee

• SCG Chemicals Co. Ltd · TH

Inventors

• Dermot O'Hare · Felton, GB
• Chunping Chen · Felton, GB
• Aunchana Wangriya · Bangkok, TH
• Anchalee Wangariyakawee · Bangkok, TH
• Qiang Wang · Karlsruhe, DE

Key dates

• Filing date: Mar 25, 2015
• Grant date: Aug 7, 2018
• Expiry date: Mar 25, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Layered double hydroxides having a high surface area (at least 125 m2/g) and the formula (I) [Mz+1−xM′y+x(OH)2]a+(Xn−)a/nbH2O.c(AMO-solvent)  (I) wherein M and M′ are different and each is a charged metal cation (and must be present), z=1 or 2; y=3 or 4, 0<x<0.9, b is 0 to 10, c=0 to 10, X is an anion, n is the charge on the anion, and a=z(1−x)+xy−2; AMO-solvent is aqueous miscible organic solvent, may be prepared by a method which comprises The high surface area products have low particle size and are particularly suitable for use as catalysts, catalyst supports, sorbents and coatings.