Patent · US Active

Process for forming expanded hexagonal layered minerals and derivatives using electrochemical charging

US9221687B2 · kind B2 · utility

3Cited by

3References

19Claims

0Family size

Assignee

NATIONAL UNIVERSITY OF SINGAPORE · SG

Inventors

Kian Ping Loh · Singapore, SG
Junzhong Wang · Singapore, SG
Gordon Chiu · Richmond, CA

Key dates

Filing date	Nov 22, 2012
Grant date	Dec 29, 2015
Priority date	—
Expiry date	Nov 7, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Processes for forming expanded hexagonal layered minerals (HLMs) and derivatives thereof using electrochemical charging are disclosed. The process includes employing HLM rocks (20) as electrodes (100) immersed in an electrolytic slurry (50) that includes an organic solvent, metal ions and expanded HLM (24). The electrolysis introduces organic solvent and ions from the metal salt from the slurry into the interlayer spacings that separate the atomic interlayers of the HLM rock, thereby forming 1st-stage charged HLM that exfoliates from the HLM rock. The process includes expanding the electrochemically 1st-stage charged HLM by applying an expanding force.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.