Synthesis of MOF having hydroxyl functional side groups and optimization of activation process for the maximization of its BET surface area

Title
Synthesis of MOF having hydroxyl functional side groups and optimization of activation process for the maximization of its BET surface area
Authors
김종식Dong Ok KimDong Wook KimKil Sagong
Keywords
MOF; Postsynthetic modification; Organic-metal precursor; Hydroxyl functional side group; Activation process; CO2 supercritical drying
Issue Date
2013-01
Publisher
Journal of solid state chemistry
Citation
VOL 197-265
Abstract
To accomplish the postsynthetic modification of MOF with organic-metal precursors (OMPs) described in our previous researches more efficiently, synthesis of MOF (HCC-2) possessing relatively larger pore size as well as higher number of hydroxyl functional side groups per its base unit than those of HCC-1 has been successfully conducted via adopting 1,4-di-(4-carboxy-2,6-dihydroxyphenyl)benzene as an organic ligand and Zn(NO3)(2)center dot 6H(2)O as a metal source, respectively. Also, optimization about the Activation process of HCC-2 was performed to maximize its BET (Brunauer-Emmett-Teller) surface area which was proved to be proportional to the number of exposed active sites on which its postsynthetic modification occurred. However, Activation process having been validated to be so effective with the acquirement of highly-purified HCC-1 (CO2 supercritical drying step followed by vacuum drying step) was less satisfactory with the case of HCC-2. This might be attributed to relatively higher hydrophilicity and bulkier molecular structure of organic ligand of HCC-2. However, it was readily settled by simple modification of above Activation process. Moreover, indispensable residues composed of both DMF and its thermally degraded derivatives which were chemically attached via coordination bond with hydroxyl functionalities even after Activation process III might enable their H-2 adsorption properties to be seriously debased compared to that of IRMOF-16 having no hydroxyl functionalities.
URI
http://pubs.kist.re.kr/handle/201004/67197
ISSN
0022-4596
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE