Falha do Solitaire Stent retriever durante a trombectomia: há alguma imagem que pode predizer a não recanalização?
AUTOR(ES)
PAGIOLA, Igor; AMARAL, Bruno; SAITO, Celso; NALLI, Dárcio; CARRETE JUNIOR, Henrique; FRUDIT, Michel Eli
FONTE
Arq. Neuro-Psiquiatr.
DATA DE PUBLICAÇÃO
2021-01
RESUMO
In order to increase the specific surface area of Pt-Rh-Pd / Al2O3 automotive three-way catalyst and improve its low-temperature reduction performance, Ce, Zr, and La were added to the Pt-Rh-Pd / Al2O3 catalyst to prepare the fibrous Pt-Rh-Pd / CeO2-ZrO2-La2O3-Al2O3 catalyst via an electrospinning technique. The fibrous catalysts were characterized by XRD, FT-IR, SEM-EDS, H2-TPR and BET analysis. The catalytic effect of the catalyst on automobile exhaust was also studied. Results revealed that the surface of catalysts is mainly mesoporous. Ce, Zr and La can remarkably increase the specific surface area of the Pt-Rh-Pd / Al2O3 catalyst. The specific surface area of the catalyst prepared with Pt Rh Pd molar ratio of 0.75:0.01:1 is 301.5816 m2 g-1, and the average diameter of which is 790 nm. In addition, the reaction temperature of the catalyst is approximately 220 °C, which shows good low-temperature reduction performance. Moreover, the Pt-Rh-Pd / CeO2-ZrO2-La2O3-Al2O3 catalyst has a catalytic conversion efficiency for NOX of 90.0% in automobile exhaust, a catalytic conversion efficiency for CO of 88.8%, and a catalytic conversion efficiency for SO2 of 75%.
Documentos Relacionados
- Não há outro caminho que não a colaboração!
- Se nÃo hà sacrifÃcio nÃo hà religiÃo. Se nÃo hà sangue, nÃo hà xangÃ: um estudo do sacrifÃcio no palÃcio de iemanjÃ
- Mechanical thrombectomy with solitaire stent retrieval for acute ischemic stroke in a Brazilian population
- Clinical efficacy of tirofiban combined with a Solitaire stent in treating acute ischemic stroke
- Não há consenso que supere o bom senso