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http://dspace.mediu.edu.my:8181/xmlui/handle/123456789/4175Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.creator | Nassar Eduardo J. | - |
| dc.creator | Serra Osvaldo A. | - |
| dc.creator | Souza-Aguiar Eduardo F. | - |
| dc.date | 1998 | - |
| dc.date.accessioned | 2013-05-30T10:45:40Z | - |
| dc.date.available | 2013-05-30T10:45:40Z | - |
| dc.date.issued | 2013-05-30 | - |
| dc.identifier | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000200002 | - |
| dc.identifier | http://www.doaj.org/doaj?func=openurl&genre=article&issn=01004042&date=1998&volume=21&issue=2&spage=121 | - |
| dc.identifier.uri | http://koha.mediu.edu.my:8181/jspui/handle/123456789/4175 | - |
| dc.description | Rare earth elements supported in zeolites are the most important catalysts in the fluid cracking of petroleum. The solid state ion exchange of Eu3+ in Y zeolite was investigated. First of all, the hydrated EuCl3 was well mixed in a ball mill and was then heated at 300ºC for different times. The quantitative determination of Eu3+ showed that the degree of ion exchange depends on the reaction time at constant temperature, being ~95% in 4 h. The X-ray study showed that the crystallinity of the zeolite is little affected by the exchange procedure. The study of spectroscopic properties of Eu3+, emission spectra and lifetime, give information about the migration and position of the ion in the zeolite cages. | - |
| dc.publisher | Sociedade Brasileira de Química | - |
| dc.source | Química Nova | - |
| dc.subject | europium | - |
| dc.subject | Y zeolites | - |
| dc.subject | ion exchange | - |
| dc.title | Troca iônica no estado sólido de európio3+ em zeólita Y: influência do tempo de reação | - |
| Appears in Collections: | Chemistry | |
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