Catalytic Ammoxidation of Hydrocarbons on Mixed Oxides

Cavani, Fabrizio; Centi, Gabriele; Marion, P

doi:10.1002/9783527626113.ch20

Cited by 15 publications

(19 citation statements)

References 149 publications

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“…Analysis of the literature [20,21], and our experimental data makes it possible to distinguish active sites of the four- • The three-component M2 phase shows the lowest activity in the oxidation of propane, propylene and acrolein. The absence of niobium in the structure reduces the ability of this phase to activate the reactants.…”

Section: Catalyst Preparationmentioning

confidence: 99%

Role of MoVTeNb oxide catalyst constituent phases in propane oxidation to acrylic acid.

Ищенко

Popova

Kardash

et al. 2013

Catalysis for Sustainable Energy

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The catalytic activity of MoVTeNbO catalyst and its constituent phases (M1, M2 and Mo 5 O 14 -like) in the oxidation of propane, as well as propylene and acrolein, which are intermediates of acrylic acid formation from propane, was studied. In all the reactions, the М1 phase shows higher activity and selectivity, compared to M2 and Mo 5 O 14 -like phases; its presence being sufficient for efficient proceeding the propane oxidation to acrylic acid. The elemental microanalysis of the EDX composition was carried out using a Phoenix spectrometer, with a Si (Li) detector and an energy resolution of approximately 130 eV. Catalyst characterization Activity evaluationThe catalysts were tested under atmospheric pressure in a Results and Discussion Catalysts characterization.Due to a complex chemical composition, the preparation of MoVTeNb oxide catalyst can result in the formation of several

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Section: Catalyst Preparationmentioning

confidence: 99%

Role of MoVTeNb oxide catalyst constituent phases in propane oxidation to acrylic acid.

Ищенко

Popova

Kardash

et al. 2013

Catalysis for Sustainable Energy

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“…Today in the chemical industry, ammoxidation is the preferred method to produce acrylonitrile, methacrylonitrile, aryl nitriles (limited to simple benzonitriles) and heteroaromatic nitriles (limited to cyanopyridines and pyrazine nitriles) on a bulkscale [12][13][14][15] . However, most of these processes are performed under drastic conditions and consequently they are restricted to nonfunctionalized substrates.…”

mentioning

confidence: 99%

Green synthesis of nitriles using non-noble metal oxides-based nanocatalysts

2014

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(Hetero)aromatic and aliphatic nitriles constitute major building blocks for organic synthesis and represent a versatile motif found in numerous medicinally and biologically important compounds. In general, these nitriles are synthesized by traditional cyanation procedures using toxic cyanides. With respect to green chemistry, the development of more sustainable and cost-efficient processes for the synthesis of advanced nitriles is highly desired. Here we report an environmentally benign synthesis of all kinds of structurally diverse aryl, heterocyclic, allylic and aliphatic nitriles from easily available alcohols applying aqueous ammonia and molecular oxygen. Key to success for this synthesis is the use of nitrogen-doped graphene-layered non-noble metal oxides as stable and durable nanocatalysts. As an example a renewable synthesis of adiponitrile, an industrially important bulk chemical is presented.

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“…At present, the cost of propylene feedstock represents about 67% of the fixed costs of production. The price differential between propane and propylene has varied from $320 to $360/t (66). Methane, ethane, and butane, which are also less expensive than propylene, and acetonitrile have been disclosed as starting materials for acrylonitrile synthesis in several catalytic process schemes (67)(68)(69).…”

Section: Other Acrylonitrile Processesmentioning

confidence: 99%

Acrylonitrile

Bradzil

2010

Kirk-Othmer Encyclopedia of Chemical Technology

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Acrylonitrile (also called acrylic acid nitrile, propylene nitrile, vinyl cyanide, and propenoic acid nitrile) is among the top 50 chemicals produced in the United States. It is used as a starting material for a wide range of chemical and polymer products. Acrylonitrile is an unsaturated molecule having a carbon‐carbon double bond conjugated with a nitrile group. It is miscible in a wide range or organic solvents, eg, acetone, benzene, carbon tetrachloride, toluene, etc. Acrylonitrile is produced commercially almost exclusively by the vapor‐phase catalytic propylene ammoxidation process. Interest in the use of propane as the feedstock is increasing because of the high cost of propylene. Acrylonitrile undergoes a wide range of reactions at its two chemically active sites, the nitrile group and the carbon‐carbon double bond. Acrylontirile is highly toxic . It will polymerize violently in the absence of oxygen if initiated by heat, light pressure, peroxides or strong acids and bases. The principal uses of acrylonitrile are in the production of acrylic fiber, acrylonitrile‐butadiene‐styrene (ABS) resins, adiponitrile, nitrile rubbers, elastomers, styrene‐acrylonitrile resins (SAN), acrylamide, and polyacryonitrile

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Catalytic Ammoxidation of Hydrocarbons on Mixed Oxides

Cited by 15 publications

References 149 publications

Role of MoVTeNb oxide catalyst constituent phases in propane oxidation to acrylic acid.

Role of MoVTeNb oxide catalyst constituent phases in propane oxidation to acrylic acid.

Green synthesis of nitriles using non-noble metal oxides-based nanocatalysts

Acrylonitrile

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