Molecular-Sieve Honeycomb for Air Separation from Picea abies

✍ Scribed by György Onyestyák; Lovat V. C. Rees; Krisztina László

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: German
• Weight: 143 KB
• Volume: 87
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.200490167

✦ Synopsis

Abstract

The cellular structure of Norway spruce (Picea abies) was transformed via a simple, single‐step carbonization process into a carbon monolith with molecular‐sieve properties. The monolith exhibited a genuine honeycomb structure derived from the original intrinsic H~2~O channels of the wood. The micropores formed during carbonization from the walls of the channels were shown to have a high adsorption capacity. The honeycomb monolith was tested for air separation. Micropore diffusion of N~2~ and O~2~ was found by the frequency‐response (FR) technique to be the rate‐controlling process of mass transport.