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Separation of Fullerene C60 and C70 Using Crystallization利用結晶方法分離富勒烯C60和C70

This invention provides for a method and process for simultaneously producing two highly pure fullerenes from mixed fullerenes that mainly contains the two components, wherein the solid-liquid phase equilibrium behavior of certain process streams are manipulated such that pure fullerenes, solid solutions, or fullerene solvates are crystallized out.

Additional purification steps are also provided to purify the solid solution or the fullerene solvate into a highly pure fullerene final product if the solid product from the crystallizers is in the form a solid solution or a fullerene solvate.
Technology Benefits
1. Simultaneously isolate the two components
2. High yield
3. Low cost
Technology Application
- Lubricants
- Controlled-release agent in drugs
- As a component in superconductors
Supplementary Information
Patent Number: US7875086B2
Application Number: US2007652475A
Inventor: Ng, Ka Ming
Priority Date: 12 Jan 2006
Priority Number: US7875086B2
Application Date: 12 Jan 2007
Publication Date: 25 Jan 2011
IPC Current: B01D000900
US Class: 023295R | 023296
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Separation of fullerene C60 and C70 using crystallization
Usefulness: Separation of fullerene C60 and C70 using crystallization
Summary: For separating pure fullerenes from mixture of fullerenes and solvent.
Novelty: Separation of pure fullerenes from mixture with solvent, involves crystallizing fullerenes, with phase equilibrium behavior of mixture exhibiting region where pure fullerene or its solid solution/solvate can be crystallized out
Sub Category
Chemical/Material Application
Application Date
12 Jan 2007
Application No.
US 11/652475
Patent Information
US 7875086
ID No.
Hong Kong

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