Catalytic Properties of Silver Vanadium Phosphates in <i>n</i>‐Butane Oxidation – Considerations on the Impact of the [V<sub>x</sub>O<sub>y</sub>] Substructure: Fid-Bau Portal

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Catalytic Properties of Silver Vanadium Phosphates in n‐Butane Oxidation – Considerations on the Impact of the [V_xO_y] Substructure

Karpov, Andrey / Dobner, Cornelia‐Katharina / Glaum, Robert / Schunk, Stephan Andreas / Rosowski, Frank

Catalysts based on silver vanadium phosphates with a general chemical formula Ag₂VP_xO_d (1 ≤ x ≤ 2; 6 ≤ d ≤ 8) have been prepared and tested in gas phase oxidation of n‐butane. This general chemical formula comprises the two known phosphates Ag₂(V^VO₂)PO₄ (x = 1; d = 6) and Ag₂(V^IVO)P₂O₇ (x = 2; d = 8) and one novel compound with an approximate composition Ag₂V^IV,VP_1.6O_7+δ (0 ≤ δ ≤ 0.5). Among the prepared compounds, Ag₂(V^VO₂)PO₄ shows the highest activity while Ag₂(V^IVO)P₂O₇ is completely inactive. The novel phase Ag₂V^IV,VP_1.6O_7+δ (0 ≤ δ ≤ 0.5) is the only compound with selectivity to maleic anhydride. A structure‐property relationship for the prepared catalysts is discussed.

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Catalytic Properties of Silver Vanadium Phosphates in n‐Butane Oxidation – Considerations on the Impact of the [V_xO_y] Substructure

Karpov, Andrey / Dobner, Cornelia‐Katharina / Glaum, Robert / Schunk, Stephan Andreas / Rosowski, Frank

Catalysts based on silver vanadium phosphates with a general chemical formula Ag₂VP_xO_d (1 ≤ x ≤ 2; 6 ≤ d ≤ 8) have been prepared and tested in gas phase oxidation of n‐butane. This general chemical formula comprises the two known phosphates Ag₂(V^VO₂)PO₄ (x = 1; d = 6) and Ag₂(V^IVO)P₂O₇ (x = 2; d = 8) and one novel compound with an approximate composition Ag₂V^IV,VP_1.6O_7+δ (0 ≤ δ ≤ 0.5). Among the prepared compounds, Ag₂(V^VO₂)PO₄ shows the highest activity while Ag₂(V^IVO)P₂O₇ is completely inactive. The novel phase Ag₂V^IV,VP_1.6O_7+δ (0 ≤ δ ≤ 0.5) is the only compound with selectivity to maleic anhydride. A structure‐property relationship for the prepared catalysts is discussed.

Catalytic Properties of Silver Vanadium Phosphates in n‐Butane Oxidation – Considerations on the Impact of the [V_xO_y] Substructure

Karpov, Andrey / Dobner, Cornelia‐Katharina / Glaum, Robert / Schunk, Stephan Andreas / Rosowski, Frank

Catalysts based on silver vanadium phosphates with a general chemical formula Ag₂VP_xO_d (1 ≤ x ≤ 2; 6 ≤ d ≤ 8) have been prepared and tested in gas phase oxidation of n‐butane. This general chemical formula comprises the two known phosphates Ag₂(V^VO₂)PO₄ (x = 1; d = 6) and Ag₂(V^IVO)P₂O₇ (x = 2; d = 8) and one novel compound with an approximate composition Ag₂V^IV,VP_1.6O_7+δ (0 ≤ δ ≤ 0.5). Among the prepared compounds, Ag₂(V^VO₂)PO₄ shows the highest activity while Ag₂(V^IVO)P₂O₇ is completely inactive. The novel phase Ag₂V^IV,VP_1.6O_7+δ (0 ≤ δ ≤ 0.5) is the only compound with selectivity to maleic anhydride. A structure‐property relationship for the prepared catalysts is discussed.

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Titel:

Catalytic Properties of Silver Vanadium Phosphates in n‐Butane Oxidation – Considerations on the Impact of the [V_xO_y] Substructure

Beteiligte:

Karpov, Andrey (Autor:in) / Dobner, Cornelia‐Katharina (Autor:in) / Glaum, Robert (Autor:in) / Schunk, Stephan Andreas (Autor:in) / Rosowski, Frank (Autor:in)

Erschienen in:

Chemie Ingenieur Technik ; 83 ; 1697-1704

Erscheinungsdatum:

01.10.2011

Format / Umfang:

8 pages

ISSN:

0009-286X , 1522-2640

DOI:

https://doi.org/10.1002/cite.201100096

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Selective Oxidation , Solid Phases , Vanadium , Silver , Catalysis

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