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Molecular‐Sieve Honeycomb for Air Separation from Picea abies
Author(s) -
Onyestyák György,
Rees Lovat V. C.,
László Krisztina
Publication year - 2004
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200490167
Subject(s) - monolith , chemistry , carbonization , molecular sieve , honeycomb , microporous material , chemical engineering , adsorption , picea abies , diffusion , sieve (category theory) , honeycomb structure , chromatography , composite material , botany , organic chemistry , materials science , catalysis , thermodynamics , physics , mathematics , combinatorics , engineering , biology
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.