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Joo, Sang Hoon
Nanomaterials & Catalysis Lab
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  • Catalyst, energy conversion, fuel cells, electrolyzer, ORR, HER, OER

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Nitrogen adsorption of cobalt-incorporated MCM-41 materials after compression at high pressure

Cited 3 times inthomson ciCited 4 times inthomson ci
Title
Nitrogen adsorption of cobalt-incorporated MCM-41 materials after compression at high pressure
Author
Pak, CJoo, Sang HoonHaller, GL
Issue Date
2005-09
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.11, no.5, pp.756 - 761
Abstract
Cobalt-incorporated MCM-41 samples were synthesized using different concentrations of Cobalt (Si/Co ratios from 20 to 100) and a direct hydrothermal method. To investigate the mechanical stability of Co-MCM-41 samples, nitrogen adsorption-desorption isotherms were measured after compressing the sample under high pressure. X-Ray diffraction patterns of Co-MCM-41 samples obtained after calcination, but before compressing, showed four diffraction peaks irrespective of the cobalt loading; this finding indicates that the mesoporous silica has a highly ordered hexagonal symmetry. After compressing the Co-MCM-41 sample (Si/Co=50) up to 392 MPa, the surface area deceased from 1343 to 782 m(2)/g. However, the mesopore structure of the Co-MCM-41 sample was maintained and the pore size (3.7 nm) was the same as that of the pristine sample. These findings suggest that Co-incorporated mesoporous silica materials are very sustainable to compression at high pressure.
URI
https://scholarworks.unist.ac.kr/handle/201301/6623
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=26644440189
ISSN
1226-086X
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CHM_Journal Papers
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