| Texto completo | |
| Autor(es): |
Iida, Takayuki
[1, 2]
;
Zanchet, Daniela
[2, 3]
;
Ohara, Koji
[4]
;
Wakihara, Toru
[1]
;
Roman-Leshkov, Yuriy
[2]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656 - Japan
[2] MIT, Dept Chem Engn, 25 Ames St, Cambridge, MA 02139 - USA
[3] Univ Estadual Campinas, Inst Chem, PO 6154, BR-13083970 Campinas, SP - Brazil
[4] Japan Synchrotron Radiat Res Inst SPring 8, Kouto 1-1-1, Sayo, Hyogo 6795198 - Japan
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION; v. 57, n. 22, p. 6454-6458, MAY 28 2018. |
| Citações Web of Science: | 11 |
| Resumo | |
Bimetallic nanoparticle encapsulation in microporous zeolite crystals is a promising route for producing catalysts with unprecedented reaction selectivities. Herein, a novel synthetic approach was developed to produce PtZnx nanoclusters encapsulated inside zeolite micropores by introducing Pt2+ cations into a zincosilicate framework via ion exchange, and subsequent controlled demetallation and alloying with framework Zn. The resulting zeolites featured nanoclusters with sizes of approximately 1 nm, having an interatomic structure corresponding to a PtZnx alloy as confirmed by pair distribution function (PDF) analysis. These materials featured simultaneous shape and substrate specificity demonstrated by the selective production of p-chloroaniline from the competitive hydrogenation of p-chloronitrobenzene and 1,3-dimethyl-5-nitrobenzene. (AU) | |
| Processo FAPESP: | 15/23900-2 - Avaliação de materiais alternativos abundantes como próxima geração de catalisadores para conversão de biomassa lignocelulósica |
| Beneficiário: | Daniela Zanchet |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |