Hydrogen adsorption on porous silica
A number of MCM-41 samples were produced with different ageing times and zinc dopantlevels. Hydrogen adsorption experiments performed at 77K on pure MCM-41 samplesshowed a maximum excess wt% uptake of 2.01%. Samples were doped with Zn in the Si:Znratio of 50:1, 25:1 and 10:1. These samples showed an...
| Main Authors: | , |
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| Format: | Journal Article |
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Pergamon-Elsevier Science Ltd
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/8668 |
| _version_ | 1848745724599074816 |
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| author | Sheppard, Drew Buckley, Craig |
| author_facet | Sheppard, Drew Buckley, Craig |
| author_sort | Sheppard, Drew |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A number of MCM-41 samples were produced with different ageing times and zinc dopantlevels. Hydrogen adsorption experiments performed at 77K on pure MCM-41 samplesshowed a maximum excess wt% uptake of 2.01%. Samples were doped with Zn in the Si:Znratio of 50:1, 25:1 and 10:1. These samples showed an increase in d-spacing in their XRDpatterns, suggestive of Zn incorporation into the structure but resulting in a decrease inlong range pore ordering and surface area with increasing Zn content. Two of the threedoped samples showed an increase in H2 adsorbed per unit surface area suggestive ofincreased interaction strength. However, definitive confirmation is difficult due todegradation of the pore structure and surface area. Adsorption at room temperature wasminimal, being 0.1wt% or below. |
| first_indexed | 2025-11-14T06:21:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-8668 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:21:55Z |
| publishDate | 2008 |
| publisher | Pergamon-Elsevier Science Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-86682017-02-28T01:31:41Z Hydrogen adsorption on porous silica Sheppard, Drew Buckley, Craig MCM-41 Silica Zinc Porous material Hydrogen storage material Hydrogen Doping A number of MCM-41 samples were produced with different ageing times and zinc dopantlevels. Hydrogen adsorption experiments performed at 77K on pure MCM-41 samplesshowed a maximum excess wt% uptake of 2.01%. Samples were doped with Zn in the Si:Znratio of 50:1, 25:1 and 10:1. These samples showed an increase in d-spacing in their XRDpatterns, suggestive of Zn incorporation into the structure but resulting in a decrease inlong range pore ordering and surface area with increasing Zn content. Two of the threedoped samples showed an increase in H2 adsorbed per unit surface area suggestive ofincreased interaction strength. However, definitive confirmation is difficult due todegradation of the pore structure and surface area. Adsorption at room temperature wasminimal, being 0.1wt% or below. 2008 Journal Article http://hdl.handle.net/20.500.11937/8668 Pergamon-Elsevier Science Ltd restricted |
| spellingShingle | MCM-41 Silica Zinc Porous material Hydrogen storage material Hydrogen Doping Sheppard, Drew Buckley, Craig Hydrogen adsorption on porous silica |
| title | Hydrogen adsorption on porous silica |
| title_full | Hydrogen adsorption on porous silica |
| title_fullStr | Hydrogen adsorption on porous silica |
| title_full_unstemmed | Hydrogen adsorption on porous silica |
| title_short | Hydrogen adsorption on porous silica |
| title_sort | hydrogen adsorption on porous silica |
| topic | MCM-41 Silica Zinc Porous material Hydrogen storage material Hydrogen Doping |
| url | http://hdl.handle.net/20.500.11937/8668 |