Synthesis, characterization and evaluation as catalysts for propane ammoxidation of VMoSbO systems with rutile-type structure

Cimini, Massimo; Millet, J.M.M.; Ballarini, Nicola; Cavani, Fabrizio; Ciardelli, Cristian; Ferrari, C.

doi:10.1016/j.cattod.2004.03.059

Cited by 19 publications

(9 citation statements)

References 18 publications

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“…acrylonitrile, Refs [2,12,14,15,30,[86][87][88][89][90][91][92][93][94][95][96][97][98][99][100][101]. with Â representing results from USPatent 5,336,804 (1994) and (B) propene !…”

mentioning

confidence: 99%

Factors limiting selectivity in C3 and C4 amm(oxidation) reactions

Costine

Hodnett

2005

Applied Catalysis A: General

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“…acrylonitrile, Refs [2,12,14,15,30,[86][87][88][89][90][91][92][93][94][95][96][97][98][99][100][101]. with Â representing results from USPatent 5,336,804 (1994) and (B) propene !…”

mentioning

confidence: 99%

Factors limiting selectivity in C3 and C4 amm(oxidation) reactions

Costine

Hodnett

2005

Applied Catalysis A: General

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“…In a review on ammoxidation [62,63] the ''Bermuda'' phase triangle of selective oxidation is described. The open d-shell elements V, Nb, Mo forming the triangle are combined with Te, Sb (and P).…”

Section: The Empirical Conceptual Basismentioning

confidence: 99%

Selective Oxidation: From a Still Immature Technology to the Roots of Catalysis Science

Schlögl

2016

Top Catal

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The design of heterogeneous selective oxidation catalysts based upon complex metal oxides is governed at present by a set of empirical rules known as “pillars of oxidation catalysis”. They serve as practical guidelines for catalyst development and guide the reasoning about the catalyst role in the process. These rules are, however, not based upon atomistic concepts and thus preclude their immediate application in for example computer-aided search strategies. The present work extends the ideas of the pillar rules and develops the concept of considering a selective oxidation catalyst as enabler for the execution of a reaction network. The enabling function is controlled by mutual interactions between catalyst and reactants. The electronic structure of the catalyst is defined as a bulk semiconductor with a surface state arising form a terminating over layer being different from the structure of the bulk. These components that can be identified by in situ analytical methods form a chemical system with feedback loops, which is responsible for generating selectivity during execution of the reaction network. This concept is based upon physical observables and could allow for a design strategy based upon a kinetic description that combines the processes between reactants with the processes between catalyst and reactants. Such kinetics is not available at present. Few of the constants required are known but many of them are accessible to experimental determination with in situ techniques

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“…Typically, these equilibrated catalysts consist of crystalline (VO) 2 P 2 O 7 with little or no side phases detectable by XRD, the phosphorus : vanadium ratio is close to unity, and the overall oxidation state of the vanadium in these catalysts is close to +IV [69]. Generally, the equilibrated catalyst is more stable against overoxidation to VOPO 4 , probably due to adsorbed carbonaceous species resulting from exposure to the reaction gas [118,199]. Generally, the equilibrated catalyst is more stable against overoxidation to VOPO 4 , probably due to adsorbed carbonaceous species resulting from exposure to the reaction gas [118,199].…”

Section: Conversion Of Butane To Maleic Anhydride: An Overview Of a Mmentioning

confidence: 99%

“…The typical states of valence observed in these materials is vanadium in the states +III and +IV, and antimony in a state of +III and +V (in some cases +IV is reported) [187]. Among the various systems described are Fe − V − Sb − O [195], [196], Cr − Sb − O [197], Ga − Sb − O [198], and V − Mo − Sb − O [199]. Catalyst samples with vanadium enrichment are usually more active in the ammoxidation reaction, but are also much less selective towards the desired reaction products [192][193][194].…”

Section: Rutile-based Structures For Selective Propane Oxidationmentioning

confidence: 99%

Oxyfunctionalization of Alkanes

Schunk

2008

Handbook of Heterogeneous Catalysis

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The sections in this article are Introduction Analyzing the Challenge of Heterogeneously Catalyzed Alkane Oxidation Analysis on a Microscopic Basis of the Critical Steps of Paraffin Oxidation Utilizing Solid Catalysts Utilizing Solid Catalysts A Activation of Oxygen and Paraffin B Models for the Active Site C The Role of Co ‐Feeds in the Educt Stream D The Role of the Crystalline Nature and the Admixture of Different Crystalline Phases for the Catalyst E The Role of the Acid–Base Interaction of Reactant and Catalyst Analysis of the Technical Challenges of Paraffin Oxidation Utilizing Solid Catalysts Conversion of Butane to Maleic Anhydride: An Overview of a Mature Technology Manufacturing Technologies for MA from n ‐Butane The VPO ‐Catalyst: Structural Basis and Synthetic Pathways The VPO ‐Catalyst: Reaction Pathways and Potential Active Sites of the Catalyst Propane Oxidation to Acrylic Acid and Acrylonitrile: Getting Closer to a Technical Solution Rutile‐Based Structures for Selective Propane Oxidation Complex Bronze Structures Based on Molybdenum for Selective Propane Oxidation Ethane to Acetic Acid: The Search for a Viable Pathway Outlook Acknowledgments

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Synthesis, characterization and evaluation as catalysts for propane ammoxidation of VMoSbO systems with rutile-type structure

Cited by 19 publications

References 18 publications

Factors limiting selectivity in C3 and C4 amm(oxidation) reactions

Factors limiting selectivity in C3 and C4 amm(oxidation) reactions

Selective Oxidation: From a Still Immature Technology to the Roots of Catalysis Science

Oxyfunctionalization of Alkanes

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