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Title: High-cobalt-loaded MCM-41 via the gas-phase method

Abstract

The mesoporous high surface area MCM-41 material was synthesized and used as a support material for the preparation of Co/MCM-41 samples. Co{sub 2}(CO){sub 8} was deposited from the gas phase onto the MCM-41 surface in a fluidized bed reactor. Pure MCM-41 and Co/MCM-41 samples were characterized by various spectroscopic and analytical methods. The MCM-41 mesoporous material showed considerable ability to adsorb Co{sub 2}(CO){sub 8} from the gas phase. The monolayer coverage after one direct deposition and decarbonylation cycle was ca. 20 wt% of cobalt. The metal loading increased up to 41 wt% using the pulse deposition method. The results of IR spectroscopy indicated that all silanols are accessible to the cobalt carbonyl. According to the N{sub 2} adsorption/desorption studies, the surface area and pore size distribution were almost unaffected even in the case of high cobalt loadings. The samples were found to have a good metal dispersion.

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of Joensuu (FI)
OSTI Identifier:
20075538
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 16; Journal Issue: 9; Other Information: PBD: 2 May 2000; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; MOLECULAR SIEVES; COBALT; CHEMICAL PREPARATION; CATALYSTS

Citation Formats

Suvanto, S., Hukkamaeki, J., Pakkanen, T.T., and Pakkanen, T.A. High-cobalt-loaded MCM-41 via the gas-phase method. United States: N. p., 2000. Web. doi:10.1021/la991176l.
Suvanto, S., Hukkamaeki, J., Pakkanen, T.T., & Pakkanen, T.A. High-cobalt-loaded MCM-41 via the gas-phase method. United States. doi:10.1021/la991176l.
Suvanto, S., Hukkamaeki, J., Pakkanen, T.T., and Pakkanen, T.A. Tue . "High-cobalt-loaded MCM-41 via the gas-phase method". United States. doi:10.1021/la991176l.
@article{osti_20075538,
title = {High-cobalt-loaded MCM-41 via the gas-phase method},
author = {Suvanto, S. and Hukkamaeki, J. and Pakkanen, T.T. and Pakkanen, T.A.},
abstractNote = {The mesoporous high surface area MCM-41 material was synthesized and used as a support material for the preparation of Co/MCM-41 samples. Co{sub 2}(CO){sub 8} was deposited from the gas phase onto the MCM-41 surface in a fluidized bed reactor. Pure MCM-41 and Co/MCM-41 samples were characterized by various spectroscopic and analytical methods. The MCM-41 mesoporous material showed considerable ability to adsorb Co{sub 2}(CO){sub 8} from the gas phase. The monolayer coverage after one direct deposition and decarbonylation cycle was ca. 20 wt% of cobalt. The metal loading increased up to 41 wt% using the pulse deposition method. The results of IR spectroscopy indicated that all silanols are accessible to the cobalt carbonyl. According to the N{sub 2} adsorption/desorption studies, the surface area and pore size distribution were almost unaffected even in the case of high cobalt loadings. The samples were found to have a good metal dispersion.},
doi = {10.1021/la991176l},
journal = {Langmuir},
issn = {0743-7463},
number = 9,
volume = 16,
place = {United States},
year = {2000},
month = {5}
}