Aberration-corrected STEM investigation of the M2 phase of MoVNbTeO selective oxidation catalyst

被引：12

作者：

Blom, Douglas A. ^{[1
]}

Pyrz, William D. ^{[2
]}

Vogt, Tom ^{[3
,4
]}

Buttrey, Douglas J. ^{[2
]}

机构：

[1] Univ S Carolina, Ctr Electron Microscopy, Columbia, SC 29208 USA

[2] Univ Delaware, Ctr Catalyt Sci & Technol, Dept Chem Engn, Newark, DE 19716 USA

[3] Univ S Carolina, NanoCtr, Columbia, SC 29208 USA

[4] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA

来源：

JOURNAL OF ELECTRON MICROSCOPY | 2009年 / 58卷 / 03期

关键词：

aberration-corrected STEM; M2; MoVTeNbO; propane (amm)oxidiation; LATTICE-RESOLUTION CONTRAST; COHERENT ELECTRON-PROBE; METAL-OXIDE CATALYSTS; PROPANE AMMOXIDATION; ACTIVE-CENTERS; O CATALYSTS; M1; PHASE; MO; BEHAVIOR; BI;

D O I：

10.1093/jmicro/dfn025

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The 'M2' phase of the oxidation catalyst MoVNbTeO was studied with an aberration-corrected STEM using HAADF imaging, and three 60 degrees twin orientations were identified. Comparisons between the experimental HAADF images and image simulations suggest that the there are two different Te sites, as has been previously reported; however, there are differences between the structure proposed in DeSanto et al. (2004) Z. Kristogr. 219: 152 and the experimental HAADF images.

引用

页码：193 / 198

页数：6

共 22 条

[1] Lattice-resolution contrast from a focused coherent electron probe. Part I [J].

Allen, LJ ;

Findlay, SD ;

Oxley, MP ;

Rossouw, CJ .

ULTRAMICROSCOPY, 2003, 96 (01) :47-63

[2] Structural aspects of the M1 and M2 phases in MoVNbTeO propane ammomidation catalysts [J].

DeSanto, P ;

Buttrey, DJ ;

Grasselli, RK ;

Lugmair, CG ;

Volpe, AF ;

Toby, BH ;

Vogt, T .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 2004, 219 (03) :152-165

[3] Structural characterization of the orthorhombic phase M1 in MoVNbTeO propane ammoxidation catalyst [J].

DeSanto, P ;

Buttrey, DJ ;

Grasselli, RK ;

Lugmair, CG ;

Volpe, AF ;

Toby, BH ;

Vogt, T .

TOPICS IN CATALYSIS, 2003, 23 (1-4) :23-38

[4] Lattice-resolution contrast from a focused coherent electron probe. Part II [J].

Findlay, S.D. ;

Allen, L.J. ;

Oxley, M.P. ;

Rossouw, C.J. .

Ultramicroscopy, 2003, 96 (01) :65-81

[5] On the nature and structure of a new MoVTeO crystalline phase [J].

García-González, E ;

Nieto, JML ;

Botella, P ;

González-Calbett, JM .

CHEMISTRY OF MATERIALS, 2002, 14 (10) :4416-4421

[6] Multifunctionality of active centers in (amm)oxidation catalysts:: from Bi-Mo-Ox to Mo-V-Nb-(Te, Sb)-Ox [J].

Grasselli, RK ;

Burrington, JD ;

Buttrey, DJ ;

DeSanto, P ;

Lugmair, CG ;

Volpe, AF ;

Weingand, T .

TOPICS IN CATALYSIS, 2003, 23 (1-4) :5-22

[7] Fundamental principles of selective heterogeneous oxidation atalysis [J].

Grasselli, RK .

TOPICS IN CATALYSIS, 2002, 21 (1-3) :79-88

[8] Active centers, catalytic behavior, symbiosis and redox properties of MoV(Nb,Ta)TeO ammoxidation catalysts [J].

Grasselli, Robert K. ;

Buttrey, Douglas J. ;

Burrington, James D. ;

Andersson, Arne ;

Holmberg, Johan ;

Ueda, Wataru ;

Kubo, Jun ;

Lugmair, Claus G. ;

Volpe, Anthony F., Jr. .

TOPICS IN CATALYSIS, 2006, 38 (1-3) :7-16

[9] A study of the surface region of the Mo-V-Te-O catalysts for propane oxidation to acrylic acid [J].

Guliants, VV ;

Bhandari, R ;

Brongersma, HH ;

Knoester, A ;

Gaffney, AM ;

Han, S .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (20) :10234-10242

[10] Catalytic behaviour of M1, M2, and M1/M2 physical mixtures of the Mo-V-Nb-Te-oxide system in propane and propene ammoxidation [J].

Holmberg, J ;

Grasselli, RK ;

Andersson, A .

APPLIED CATALYSIS A-GENERAL, 2004, 270 (1-2) :121-134

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