Synthesis and NMR Characterization of Titanium and Zirconium Oxides Incorporated in SBA-15

被引：22

作者：

Degirmenci, Volkan ^{[1
]}

Erdem, Oezlen Ferruh ^{[1
,2
]}

Ergun, Orcun

Yilmaz, Aysen ^{[3
]}

Michel, Dieter ^{[2
]}

Uner, Deniz ^{[1
]}

机构：

[1] Middle E Tech Univ, Dept Chem Engn, TR-06531 Ankara, Turkey

[2] Univ Leipzig, Inst Expt Phys 2, D-04103 Leipzig, Germany

[3] Middle E Tech Univ, Dept Chem, TR-06531 Ankara, Turkey

来源：

TOPICS IN CATALYSIS | 2008年 / 49卷 / 3-4期

关键词：

Titania; Zirconia; Si-29 MAS NMR; SBA-15; Mesoporous silica;

D O I：

10.1007/s11244-008-9078-z

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Single oxides of Ti and Zr incorporated SBA-15 were prepared and characterized by N-2 adsorption, NMR, and XPS techniques. Si-29 MAS NMR results suggest the formation of Si-O-X linkages (X: Ti or Zr) by an increase in the ratio of Q(3)/Q(4) in the presence of Ti or Zr. XPS analysis of Ti-SBA-15 catalysts indicate the presence of Ti-O-Si bonds in addition to Ti-O-Ti and Si-O-Si bonds, supporting the NMR evidence.

引用

页码：204 / 208

页数：5

共 29 条

[1] Nature of active sites in sol-gel TiO2-SiO2 epoxidation catalysts [J].

Beck, C ;

Mallat, T ;

Bürgi, T ;

Baiker, A .

JOURNAL OF CATALYSIS, 2001, 204 (02) :428-439

[2] Direct impregnation method for preparing sulfated zirconia supported on mesoporous silica [J].

Chen, CL ;

Li, T ;

Cheng, SF ;

Lin, HP ;

Bhongale, CJ ;

Mou, CY .

MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 50 (2-3) :201-208

[3] Enhanced photocatalytic activity of titanium dioxide supported on hexagonal mesoporous silica at lower coverage [J].

Dai, Q ;

He, NY ;

Weng, KP ;

Lin, BP ;

Lu, ZH ;

Yuan, CW .

JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY, 1999, 35 (1-2) :11-21

[4] Titania-silica: A model binary oxide catalyst system [J].

Davis, RJ ;

Liu, ZF .

CHEMISTRY OF MATERIALS, 1997, 9 (11) :2311-2324

[5] Sulfated zirconia in SBA-15 structures with strong Bronsted acidity as observed by 1H MAS NMR spectroscopy [J].

Degirmenci, Volkan ;

Erdem, Ozlen Ferruh ;

Yilmaz, Aysen ;

Michel, Dieter ;

Uner, Deniz .

CATALYSIS LETTERS, 2007, 115 (1-2) :79-85

[6]

Engelhardt G., 1987, HIGH RESOLUTION SOLI

[7]

Ergün O, 2007, TURK J CHEM, V31, P501

[8] SPECTROSCOPIC CHARACTERIZATION OF TIO2/SIO2 CATALYSTS [J].

FERNANDEZ, A ;

LEYRER, J ;

GONZALEZELIPE, AR ;

MUNUERA, G ;

KNOZINGER, H .

JOURNAL OF CATALYSIS, 1988, 112 (02) :489-494

[9] Titania-silica as catalysts: molecular structural characteristics and physico-chemical properties [J].

Gao, XT ;

Wachs, IE .

CATALYSIS TODAY, 1999, 51 (02) :233-254

[10] Preparation and characterization of tungsten carbide confined in the channels of SBA-15 mesoporous silica [J].

Hu, Linhua ;

Ji, Shengfu ;

Xiao, Tiancun ;

Guo, Canxiong ;

Wu, Pingyi ;

Nie, Pingying .

JOURNAL OF PHYSICAL CHEMISTRY B, 2007, 111 (14) :3599-3608

← 1 2 3 →