| dc.creator | Lazarin, AM | |
| dc.creator | Borgo, CA | |
| dc.creator | Gushikem, Y | |
| dc.date | 2002 | |
| dc.date | MAY-JUN | |
| dc.date | 2014-11-14T22:28:15Z | |
| dc.date | 2015-11-26T17:17:36Z | |
| dc.date | 2014-11-14T22:28:15Z | |
| dc.date | 2015-11-26T17:17:36Z | |
| dc.date.accessioned | 2018-03-29T00:05:28Z | |
| dc.date.available | 2018-03-29T00:05:28Z | |
| dc.identifier | Quimica Nova. Soc Brasileira Quimica, v. 25, n. 3, n. 499, n. 501, 2002. | |
| dc.identifier | 0100-4042 | |
| dc.identifier | WOS:000175847000024 | |
| dc.identifier | 10.1590/S0100-40422002000300025 | |
| dc.identifier | http://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75992 | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/75992 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/75992 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1282488 | |
| dc.description | ZrO2THIN FILM GRAFTED ON SILICA GEL SURFACE: PREPARATION AND Cr(VI) ADSORPTION PROPERTY. The present experiment describes in easy procedure for obtaining SiO2/ZrO2 by reacting ZrOCl2 with SiO2 with the following characteristics: S-BEC = 500 m(2) g(-1) and an average pore diameter of 6 nm. The material obtained presented 1.3 wt% ZrO2 content corresponding to 140 mumol g(-1). The average density of ZrO2 onto SiO2/ZrO2 matrix is 2.8x10(-11) mol cm(-2). The adsorption isotherm for Cr(VI) showed a maximum of adsorption value (200 mumol g(-1)) at pH 2. The adsorption can be described by the reaction: =Zr(OH)(2) + 2HCrO(4) . + 2H(+) reversible arrow [(=Zr(OH2+)(2)) (HCrO4.)(2)]. Above the zero point of charge, i.e. pH > 5.5 due to the surface charge inversion, desorption of Cr(VI) occurs according to the reaction: [(=Zr(OH2+)(2)) (HCrO4.)(2)] + 60H reversible arrow (=ZrO2)(2.) + 6H(2)O + 2CrO(4)(2-). | |
| dc.description | 25 | |
| dc.description | 3 | |
| dc.description | 499 | |
| dc.description | 501 | |
| dc.language | pt | |
| dc.publisher | Soc Brasileira Quimica | |
| dc.publisher | Sao Paulo | |
| dc.publisher | Brasil | |
| dc.relation | Quimica Nova | |
| dc.relation | Quim. Nova | |
| dc.rights | aberto | |
| dc.source | Web of Science | |
| dc.subject | silica gel | |
| dc.subject | zirconium(IV) oxide | |
| dc.subject | chromium(VI) | |
| dc.subject | Chromium(vi) | |
| dc.subject | Dioxide | |
| dc.subject | Sodium | |
| dc.title | ZrO2 thin film grafted on silica gel surface: Preparation and Cr(VI) adsorption property | |
| dc.type | Artículos de revistas | |
