| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3r59YDb/KbJia |
| Repository | sid.inpe.br/iris@1917/2006/02.16.12.02 (restricted access) |
| Last Update | 2006:02.16.12.02.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/iris@1917/2006/02.16.12.02.52 |
| Metadata Last Update | 2018:06.05.03.43.40 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| ISSN | 0169-4332 |
| Citation Key | SoaresNetoCoboCruz:2005:EvMoPr |
| Title | Evolution of morphologic properties on the preparation of IrAl2O3 catalysts with high metallic contents  |
| Year | 2005 |
| Access Date | 2024, Apr. 27 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 168 KiB |
| 2. Context | |
| Author | 1 Soares Neto, Turíbio Gomes. 2 Cobo, Antonio José Gomes. 3 Cruz, Gilberto Marques. |
| Group | 1 LCP-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Universidade Estadual de Campinas (UNICAMP) 3 Faculdade de Engenharia Quý´mica de Lorena (FAENQUIL) |
| Journal | Applied Surface Science |
| Volume | 240 |
| Pages | 355-365 |
| History (UTC) | 2006-02-16 12:08:20 :: ignes -> administrator :: 2012-11-24 01:38:59 :: administrator -> ignes :: 2005 2013-02-20 14:54:14 :: ignes -> administrator :: 2005 2018-06-05 03:43:40 :: administrator -> marciana :: 2005 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | Alumina Catalysts characterization Catalysts preparation Hydrazine decomposition Iridium catalysts Spacecraft propulsion |
| Abstract | Abstract - Ir/Al2O3 catalysts with high metallic contents are applied on satellite thruster to decompose hydrazine. The present work has as principal aim the study of the morphologic evolution of Ir/Al2O3 catalysts with metallic contents from 12 to 30 wt.%. The catalysts were prepared through consecutive impregnations from the H2IrCl6 precursor, using three different types of aluminas. The specific surface area, volume and distribution of pore size, specific metallic area and metallic particles average diameter, as well as the mechanical resistance were determined. Results show that the Ir addition leads to a decrease of the specific surface area and the pores volumes, while increases the mechanical resistance. Values for average diameter of metallic particles are comprised between 1.4 and 2.4 nm when the metallic content increases from 12 to 30 wt.%. Catalysts containing 30 wt.% of Ir presents specific metallic areas around 30 m2/g, although pores volumes and distributions of pore size were considerably different for the three supports. Their metallic particles dispersion and size values are very close to those of a commercial catalyst Shell 405, even though the preparation methods were different. These results show that there is a strong interaction between the alumina and the iridium precursor. |
| Area | COMB |
| Arrangement | urlib.net > Fonds > Produção anterior à 2021 > LABCP > Evolution of morphologic... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | evolution.pdf |
| User Group | administrator ignes |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ET38CH |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel documentstage doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository month nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |