HKUST-1 membranes on porous supports using secondary growth

Here we report the synthesis of continuous HKUST-1 membranes on porous supports via the secondary (i.e., seeded) growth method. A new seeding technique ("thermal seeding") was developed to strongly anchor HKUST-1 seed crystals on porous a-alumina supports. It was found critical to have bot...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry 2010-05, Vol.20 (19), p.3938-3943
Main Authors: Guerrero, V V, Yoo, Y, McCarthy, M C, Jeong, H-K
Format: Article
Language:English
Subjects:
Anchors
Cooling
Crystals
Fracture mechanics
Membranes
Nucleation
Permeation
Seeds
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Here we report the synthesis of continuous HKUST-1 membranes on porous supports via the secondary (i.e., seeded) growth method. A new seeding technique ("thermal seeding") was developed to strongly anchor HKUST-1 seed crystals on porous a-alumina supports. It was found critical to have both organic ligands and copper species in the seed suspension as well as to seed the crystals at elevated temperature. The HKUST-1 seed crystals on the supports were then hydrothermally grown into continuous HKUST-1 films. The formation of cracks and fractures in the films was prevented by controlling the cooling and the drying processes after crystallization. The permeation results of HKUST-1 membranes show moderate separation of hydrogen over other small gas molecules such as carbon dioxide, nitrogen, oxygen, and methane.
ISSN:0959-9428
DOI:10.1039/b924536g