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Titolo:
Effect of pretreatment methods on catalytic performance of titanium silicalite-1
Autore:
Guo, XW; Liu, M; Wang, XS; Li, G; Chen, YY; Liu, S;
Indirizzi:
Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China Dalian Univ Technol Dalian Peoples R China 116012 16012, Peoples R China
Titolo Testata:
CHINESE JOURNAL OF CATALYSIS
fascicolo: 4, volume: 22, anno: 2001,
pagine: 370 - 372
SICI:
0253-9837(200107)22:4<370:EOPMOC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
CHI
Keywords:
titanium silicalite-1; pretreatment; hydrochloric acid; ammonium fluoride; nitric acid; sulfuric acid; propylene; epoxidation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Guo, XW Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China Dalian Univ Technol Dalian Peoples R China 116012 eoples R China
Citazione:
X.W. Guo et al., "Effect of pretreatment methods on catalytic performance of titanium silicalite-1", CHIN J CATA, 22(4), 2001, pp. 370-372

Abstract

Titanium silicalite-1 (TS-1) was pretreated by solution of HCl-H2O2, NH4F-H2O2, HNO3-H2O2 or H2SO4-H2O2. The pretreated samples were characterized byIR, XRD, UV-Vis, XRF and Al-27 MAS NMR and evaluated by epoxidation of propylene with H2O2. The results showed that almost all Na+ and about 20% of TiO2 are removed from TS-1 after pretreatment. The TiO2 removed from TS-1 isextra-framework titanium species. After pretreatment, the selectivity for PO decreases, and the utilization of H2O2 increases obviously. Concerning the utilization and the conversion of H2O2, the pretreatment method with NH4F-H2O2 is the best one.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 00:50:23