Examples of 'hydrocyanation' in a sentence
Meaning of "hydrocyanation"
Hydrocyanation is a chemical process involving the addition of a cyanide group to a compound
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- Any reaction in which the elements of hydrogen cyanide are added to a molecule, especially across a double bond.
How to use "hydrocyanation" in a sentence
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hydrocyanation
These trials relate to the hydrocyanation of pentenenitriles to adiponitrile.
Hydrocyanation of olefinically unsaturated nitriles into dinitrile compounds.
The organometallic complex thus extracted can be recycled in a hydrocyanation reaction.
Hydrocyanation may also be carried out in the gas phase.
The alkenyl nitrile may be produced by a batch or continuous hydrocyanation process.
The hydrocyanation reaction is preferably carried out without a solvent.
Said solvents can be selected from those mentioned previously for hydrocyanation.
The hydrocyanation may be carried out with or without a solvent.
These ratios can be different according to the hydrocyanation reaction carried out.
The method of hydrocyanation of the invention can be used continuously or to discontinuously.
The aqueous catalytic solution may then be recycled to a new hydrocyanation reaction.
The first and second hydrocyanation stages are advantageously carried out in series.
This invention relates to processes and catalyst compositions useful in the hydrocyanation of monoolefins.
Hydrocyanation is an industrial method for producing nitriles from hydrogen cyanide and alkenes.
Nickel is the preferred element for the hydrocyanation of unsaturated nitriles and olefins.
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These hydrocyanation reactions are carried out in the presence of homogeneous or heterogeneous catalytic systems.
Such solvents can be chosen from those which were mentioned above for the hydrocyanation.
Hydrocyanation can be carried out in accordance with conventional procedures known in the art.
Numerous other organophosphorus ligands have been provided for the catalysis of these hydrocyanation reactions.
The distribution of products from conjugative hydrocyanation depends both on substrate structure and reaction conditions.
Such solvents may be selected from those which were identified above for the hydrocyanation.
The rate of hydrocyanation was judged by analysis of GC changes.
Such solvents may be chosen from among those which have been mentioned hereinabove for hydrocyanation.
Staged HCN addition within the hydrocyanation reaction zone may be used.
The BD hydrocyanation reaction zone may comprise one or more physical reactors.
The latter stream is fed to the second hydrocyanation reactor 6.
Preferably, the hydrocyanation reaction medium is agitated, such as by stirring or shaking.
The most preferred processes include hydroformylation, hydrocyanation and carbonylation.
Hydrocyanation can also be carried out with a conjugated, unsaturated compound.
Industrially, the main methods for producing nitriles are ammoxidation and hydrocyanation.
Furthermore, in the hydrocyanation reaction of the unsaturated nitrites, a promoter or cocatalyst is generally used.
The linear nitrile compounds, such as pentenenitriles, are fed into a second hydrocyanation step.
The present invention relates more especially to hydrocyanation reactions catalyzed by nickel-based compounds.
By " catalyst precursor composition " is meant the mix of catalyst ingredients entering the hydrocyanation reaction.
The improved process of Claim 15 wherein hydrocyanation is performed as a batch operation.
The process of claim 2 further comprising separating unreacted nickel chloride from the hydrocyanation catalyst.
In the 3PN hydrocyanation reaction, promoters are provided to enhance the production of dinitriles.
Organophosphorus compounds, catalytic systems comprising said compounds and method of hydrocyanation using said catalytic systems.
Hydrocyanation catalysts may comprise phosphorus-containing ligands which are reactive with TBC.
The improved process of Claim 15 wherein hydrocyanation is performed continuously.
The hydrocyanation process of Claim 11 wherein the Lewis acid is zinc chloride or iron chloride.
This Example 23 is a process for making adiponitrile by the double hydrocyanation of butadiene.
In the hydrocyanation reaction of butadiene, the transfer is non-reversible.
The BD-enriched and catalyst-enriched streams may be recycled to the BD hydrocyanation reaction.
A process for the hydrocyanation of alkyl 2-alkenoates of the form,.
The process according to claim 14, wherein the pentenenitriles are obtained by hydrocyanation of butadiene.
Hydrocyanation and isomerization with polymer from Reference Example 4,.
The linear unsaturated nitriles ( PN 1 stream ) are introduced into a second hydrocyanation reactor.
Hydrocyanation is, most fundamentally, the process whereby H+ and - CN ions are added to a molecular substrate.
Its susceptibility to 1,4-addition reactions is illustrated by it hydrocyanation.
