NDLI: Preparation of Phase-Pure M1 MoVTeNb Oxide Catalysts by Hydrothermal Synthesis—Influence of Reaction Parameters on Structure and Morphology

Content Provider	Springer Nature Link
Author	Celaya Sanfiz, A. Hansen, T. W. Girgsdies, F. Timpe, O. Rödel, E. Ressler, T. Trunschke, A. Schlögl, R.
Copyright Year	2008
Abstract	This work presents a detailed investigation of the preparation of MoVTeNbO$_{ x }$ catalysts by hydrothermal synthesis. Phase-pure synthesis of M1 has been achieved applying the metals in a molar ratio Mo/V/Te/Nb = 1/0.25/0.23/0.12. Raman, UV/Vis spectroscopy, and SEM/EDX analysis show that the elements are inhomogeneously distributed in the initial suspension that is formed after mixing the metal salts in an aqueous medium. Iso- and heteropoly anions of molybdenum, free telluric acid as well as supra-molecular polyoxometalate clusters are observed in the solution, whereas all metals have been found in the precipitate. Complete rearrangement of molecular building blocks under hydrothermal conditions is essential for formation of phase-pure materials. Optimized synthesis conditions with respect to temperature and time result in the formation of a precursor consisting of nano-structured M1 characterized by an extended periodic organization in the [001] direction and a fairly homogeneous distribution of the elements. Residual ammonium containing supra-molecular species in the precursor result in the formation of phase mixtures during the subsequent crystallization by heat treatment in inert gas. Phase-pure M1 exhibits a distinct degree of flexibility with respect to the chemical composition that becomes obvious by incorporating Nb not exclusively into pentagonal bi-pyramidal units, but also into octahedral coordinated positions as shown by EXAFS. Anisotropic growth of the needle-like M1 crystals has been observed during the final heat treatment performed at 873–923 K in inert atmosphere disclosing a potential method to control the catalytic properties of MoVTeNbO$_{ x }$ catalysts.
Starting Page	19
Ending Page	32
Page Count	14
File Format	PDF
ISSN	10225528
Journal	Topics in Catalysis
Volume Number	50
Issue Number	1-4
e-ISSN	15729028
Language	English
Publisher	Springer US
Publisher Date	2008-06-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrothermal synthesis MoVTeNbO$_{ x }$ catalyst M1 phase Propane oxidation Characterization and Evaluation of Materials Industrial Chemistry/Chemical Engineering Pharmacy Physical Chemistry Catalysis
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Preparation of Single M1 Phase MoVTe(Sb)NbO Catalyst: Study of the Effect of M2 Phase Dissolution on the Structure and Catalytic Properties

Propane Oxidation on MoVTeNbO Mixed Oxide Catalysts: Study of the Phase Composition of Active and Selective Catalysts

Original paper preparation of phase-pure m1 movtenb oxide catalysts by hydrothermal synthesis—influence of reaction parameters on structure and morphology (2008).

Influence of the Content and Distribution of Vanadium in the M1 Phase of the MoVTe(Sb)NbO Catalysts on their Catalytic Properties in Light Alkanes Oxidation

Redox State Dynamics at the Surface of MoVTe(Sb)NbO M1 Phase in Selective Oxidation of Light Alkanes

Influence of Nb Content on the Structure, Cationic and Valence Distribution and Catalytic Properties of MoVTe(Sb)NbO M1 Phase Used as Catalysts for the Oxidation of Light Alkanes

Selective oxidation of short-chain alkanes over hydrothermally prepared MoVTeNbO catalysts

On the Role of the Vanadium Distribution in MoVTeNbO$_{ x }$ Mixed Oxides for the Selective Catalytic Oxidation of Propane

Synthesis and Monitoring of MoVSbNbO Oxidation Catalysts Using V K and Sb L$_{1}$-Edge Xanes Spectroscopy

Preparation of Phase-Pure M1 MoVTeNb Oxide Catalysts by Hydrothermal Synthesis—Influence of Reaction Parameters on Structure and Morphology

Similar Documents

Preparation of Single M1 Phase MoVTe(Sb)NbO Catalyst: Study of the Effect of M2 Phase Dissolution on the Structure and Catalytic Properties

Propane Oxidation on MoVTeNbO Mixed Oxide Catalysts: Study of the Phase Composition of Active and Selective Catalysts

Original paper preparation of phase-pure m1 movtenb oxide catalysts by hydrothermal synthesis—influence of reaction parameters on structure and morphology (2008).

Influence of the Content and Distribution of Vanadium in the M1 Phase of the MoVTe(Sb)NbO Catalysts on their Catalytic Properties in Light Alkanes Oxidation

Redox State Dynamics at the Surface of MoVTe(Sb)NbO M1 Phase in Selective Oxidation of Light Alkanes

Influence of Nb Content on the Structure, Cationic and Valence Distribution and Catalytic Properties of MoVTe(Sb)NbO M1 Phase Used as Catalysts for the Oxidation of Light Alkanes

Selective oxidation of short-chain alkanes over hydrothermally prepared MoVTeNbO catalysts

On the Role of the Vanadium Distribution in MoVTeNbO$_{ x }$ Mixed Oxides for the Selective Catalytic Oxidation of Propane

Synthesis and Monitoring of MoVSbNbO Oxidation Catalysts Using V K and Sb L$_{1}$-Edge Xanes Spectroscopy

Preparation of Phase-Pure M1 MoVTeNb Oxide Catalysts by Hydrothermal Synthesis—Influence of Reaction Parameters on Structure and Morphology