NO decomposition in non-reducing atmospheres. Technical progress report, September 1995--November 1995

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New samples of Co(II)-ZSM-5 zeolites were prepared, and Co-containing ZSM-5 and erionite were studied via diffuse reflectant spectroscopy after being dehydrated at 350 and 500{degrees}C and after adsorption of carbon monoxide, water, and ethylene. In general, Co-ZSM-5 contains three different Co sites. However, Co-ZSM-5 prepared at acidic conditions contained only two different sites. One of these sites is probably identical with the Co site in Co-erionite. After dehydration at 500{degrees}C, Co siting in these zeolites was changed. In erionite at this same condition, Co ions were located in the plane of the single regular six-ring. Only strong ligands such as ... continued below

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43 p.

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Klier, K.; Herman, R.G. & Dedeck, J. February 1, 1996.

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Description

New samples of Co(II)-ZSM-5 zeolites were prepared, and Co-containing ZSM-5 and erionite were studied via diffuse reflectant spectroscopy after being dehydrated at 350 and 500{degrees}C and after adsorption of carbon monoxide, water, and ethylene. In general, Co-ZSM-5 contains three different Co sites. However, Co-ZSM-5 prepared at acidic conditions contained only two different sites. One of these sites is probably identical with the Co site in Co-erionite. After dehydration at 500{degrees}C, Co siting in these zeolites was changed. In erionite at this same condition, Co ions were located in the plane of the single regular six-ring. Only strong ligands such as water could be adsorbed on Co ions in ZSM-5 zeolite dehydrated at 350{degrees}C, but Co ions in zeolites dehydrated at 500{degrees}C were also affected by weak ligands. Adsorption studies with NO are underway, and catalytic testing for NO decomposition and reduction over Co-containing zeolites will be carried out during the next quarter.

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43 p.

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OSTI as DE96011568

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  • Other Information: PBD: Feb 1996

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  • Other: DE96011568
  • Report No.: DOE/PC/93222--9
  • Grant Number: FG22-93PC93222
  • DOI: 10.2172/245661 | External Link
  • Office of Scientific & Technical Information Report Number: 245661
  • Archival Resource Key: ark:/67531/metadc671722

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  • February 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 3, 2015, 4:35 p.m.

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Klier, K.; Herman, R.G. & Dedeck, J. NO decomposition in non-reducing atmospheres. Technical progress report, September 1995--November 1995, report, February 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc671722/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.