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7371882 Reactor for producing a nitrile compound and method for operating the reactor  
A reactor for producing a nitrile compound from a carbon ring or heterocyclic compound having organic substituents by a gas phase reaction using a fluidized catalyst bed with ammonia and a gas...
7307181 Process for producing a nitrile compound  
In a process for producing a nitrile compound comprising introducing a carbon ring or heterocyclic compound having organic substituents, ammonia and the air into a reactor and reacting the...
7161021 Process for producing a polynitrile compound  
In a process for producing a polynitrile compound comprising introducing a polysubstituted organic compound (POC) which is a carbon ring or heterocyclic compounds having a plurality of organic...
6372908 Preparation of vanadium antimonate based catalyst using sno2h2o  
A method of preparing a catalyst having the elements and the proportions indicated by the following empirical formula: VSbmAaDdOxwhereA is one or more Ti, Sn, where Sn is always presentD is one or...
6107510 Process for producing nitrile compound and catalyst used therefor  
There are disclosed a process for producing a nitrile compound which comprises catalytically reacting an alkyl group-substituted aromatic compound or an alkyl group-substituted heterocyclic...
6072070 Vanadium/antimony/titanium mixed oxide and process of use in vapor phase ammoxidation of an alkane  
Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a...
6057471 Ammoxidation method in fluidized-bed reactor  
An ammoxidation method in a fluidized-bed reactor, in which, when a starting material to be ammoxidized is ammoxidized by means of vapor-phase catalytic fluidized-bed reaction, the reaction is...
5952262 Preparation of aromatic or heteroaromatic nitriles  
Preparation of aromatic or heteroaromatic nitrites of the formula I ##STR1## where X is nitrogen or C-R6 and all of the R substituents represent hydrogen, alkyl, halogen, nitro, amino or similar...
5670694 Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile and 2,6-dichloro-3-fluorobenzonitrile  
A mixture of 2,4-dichloro-5-fluorotoluene and 2,6-dichloro-3-fluorotoluene which cannot be separated in an economically efficient manner and can be reacted individually to give the corresponding...
5554782 Preparation of dicyanobenzenes by ammonoxidation  
A process for the preparation of dicyanobenzenes of the formula ##STR1## in which x denotes hydroxy, C1 -C4 alkoxy, nitro, amino, mono- or di-(C1 -C4 alkyl)amino, phthalimido or a nitrogenous...
5262547 Process for the production of petrochemicals  
Petrochemicals are produced by the vapor phase reaction of a hydrocarbon with substantially pure oxygen in the presence of a suitable catalyst. In the improved process, the principal product is...
5183793 Ammoxidation catalysts and methods for their preparation for use in the production of isophthalonitrile  
Catalysts having the general formula: V1 Bia Sbb Fec Xd Yc Zf Ogwherein, X=Mo, Cu, W, Nb, Te, P, Sn, Ge, As Y=Co, Ni, Ce, La, Mn, Cr Z=Alkali, alkaline earth, B, Tl and,...
5045156 Distillation of isophthalonitrile with a hydrocarbon liquid  
High boiling point aromatic free hydrocarbon liquids partially substituted for isophthalonitrile during its distillation fluidize the bottoms and increase isophthalonitrile yield.
5043308 Crystalline rare earth aluminum borates  
The preparation, structure, and properties of solid inorganic materials containing at least one rare earth element, aluminum, boron and oxygen are described. Also described is the use of such...
5002639 Separation of ortho-, meta- and para-tolunitrile from ternary mixtures of the isomers  
A process for the separation of ortho-, meta- and para-tolunitrile from ternary mixtures of isomers entails removing ortho-tolunitrile from these mixtures by distillation under pressures of from...
4985581 Catalyst and process for producing aromatic nitriles  
The present invention relates to a catalyst which comprises a vanadium oxide, a chromium oxide, a molybdenum oxide and a boron oxide supported on a silica carrier. This catalyst is suitable for use...
4939260 Process for producing aromatic nitriles or heterocyclic nitriles  
A process for producing aromatic or heterocyclic nitriles, which comprises reacting an alkyl-substituted aromatic hydrocarbon or an alkyl-substituted heterocyclic compound with ammonia and oxygen...
4883897 Process for producing 2,6-dichlorobenzonitrile  
A process for producing 2,6-dichlorobenzonitrile by ammoxidation comprising contacting a starting gas consisting of 2,6-dichlorotoluene, air and ammonia, which comprises carrying out this reaction...
4774352 Process for ammoxidation  
The activity of a tellurium-free metal oxide catalyst used for ammoxidation of organic compounds at a temperature of from 300° C. to 600° C. is improved in the presence of (a) elemental tellurium o...
4709071 Process for improving activity of tellurium containing metal oxide catalysts  
A process for improving the activity of tellurium containing metal oxide catalysts useful as catalysts for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds by heating the...
4582647 Process for the preparation of pure 2,6-dichlorobenzonitrile  
The present invention provides a process for the preparation of pure 2,6-dichlorobenzonitrile by the ammonoxidation of 2,6-dichlorotoluene in the presence of a catalyst based on vanadium-molybdenum...
4539409 Process for preparing aromatic nitriles  
A process is disclosed for preparing coated catalysts, inter alia, for gas phase oxidations in organic chemistry, comprised of an inert support and a coating of catalyst material enclosing this...
4530797 Process for producing polychlorobenzonitrile  
A process for producing polychlorobenzonitrile having chlorine atoms at the 2,6-position by ammoxidation of toluene derivative having chlorine atoms at the 2,6-position with a gas containing...
4502997 Treatment of purge gas  
The invention relates to a process for treating purge gas including carbon dioxide, water vapor, organics and ammonia. In accordance with the invention, the purge gas is scrubbed with water to...
4439371 Method for preparing phthalonitriles  
The present invention relates to methods for preparing aromatic nitriles and, more specifically, to a method for preparing phthalonitriles.The present method for preparing phthalonitriles resides...
4410450 Process for producing fluid catalyst having good activity from coarse catalyst  
A process for producing a fluid catalyst having good activity from a coarse catalyst wherein said fluid catalyst is suitable for oxidation, ammoxidation or oxidative dehydrogenation reaction of...
4406841 Process for producing 2,6-difluorobenzonitrile  
A process for producing 2,6-difluorobenzonitrile comprises reducing a chloro fluorobenzonitrile selected from 3-chloro-2,6-difluorobenzonitrile, 3,5-dichloro-2,6-difluorobenzonitrile or a mixture...
4336205 Method for producing aromatic nitriles  
Aromatic nitriles can be produced in high yields by ammoxidation of an alkyl-substituted aromatic compound in the presence of a catalyst containing oxides of (1) vanadium, (2) antimony and (3) at...
4305886 Process for the ammoxidation of alkylaromatic hydrocarbons  
A process for the ammoxidation of aromatic hydrocarbons in a fluidized bed reactor is disclosed. The upper level of a dense bed of fluidized catalyst is maintained near the inlet of the particle...
4284583 Ammoxidation process with external catalyst regeneration zone  
A process for the ammoxidation of alkylaromatic hydrocarbons in a fluidized bed reactor is disclosed. A relatively small stream of catalyst is removed from an unsegregated single catalyst bed...
4284781 Supported vanadia catalyst and use thereof for nitrile production  
Vanadia supported on a silica-alumina or gamma-alumina support in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the...
4203906 Process for catalytic vapor phase oxidation  
A process for catalytic vapor phase oxidation which comprises using a fixed-bed shell and tube heat exchange type reactor in which a bundle of a multiplicity of tubes filled with at least one type...
4178304 Method of producing ortho-aminobenzonitrile  
According to the invention, a method of producing orthoaminobenzonitrile is provided according to which ortho-toluidine is reacted with ammonia at a temperature of 360°-460° C. in the presence of o...
4124631 Process for the production of aromatic nitriles  
A process for the production of aromatic nitrile having the formula (I) ##STR1## wherein X represents a chlorine, bromine, iodine or fluorine atom and n is 1 or 2,By contacting aromatic compound...
4092271 Supported vanadia catalyst for nitrile production and process for preparing the catalyst  
Vanadia supported on a silica-alumina or gamma-alumina support in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the...
4082786 Process of production of aromatic nitriles  
Aromatic nitriles can be produced at a high conversion and at a high selectivity by filling cylindrical wire netting into a fluidized bed reactor when the aromatic nitriles are produced by...
4065487 Process for producing benzonitrile  
A process for producing benzonitrile which comprises reacting toluene with ammonia in the presence of oxygen or a mixture thereof with inert gases and a catalyst; as the latter use is made of a...
4062885 Process for producing phthalonitrile  
A process for producing phthalonitrile, which comprises reacting o-xylene with ammonia in the presence of oxygen or a mixture thereof with inert gases and a catalyst; as the latter use is made of a...
4055587 Ammoxidation of alkyl substituted organic compounds using a solution of ammonium carbonate as the ammonia source  
In the process of converting alkyl substituted aromatic hydrocarbon to nitriles by ammoxidation where the aromatic hydrocarbon compound, oxygen and ammonia are reacted in the presence of an...
3993690 Method of obtaining aromatic tri-or-tetracarboxylic acids  
A method of obtaining aromatic tri- or tetracarboxylic acids characterized in that tri- or tetraalkylbenzenes or the derivatives thereof with a heteroatom in the side chain, are oxidized by oxygen...
3959339 Process for producing aromatic nitriles  
Aromatic nitriles are produced in good yield from a gas mixture comprising alkyl-substituted aromatic compound, ammonia and molecular oxygen by ammoxidation by passing the gas mixture over a...
3944592 Method of producing unsaturated nitriles  
A method of producing unsaturated nitriles by reaction of an unsaturated hydrocarbon with ammonia and oxygen in a reactor having a fluidized catalyst bed comprising a regeneration zone and a...
3927007 Catalysts for the production of aromatic and heteroaromatic nitriles  
Catalysts for the reaction of alkyl substituted aromatic and heteroaromatic hydrocarbons with ammonia and oxygen to form the corresponding nitriles are prepared by heating a compound of the...
3925447 Production of nitriles  
Nitriles are produced by reaction of hydrocarbon and ammonia in the presence of a supported metal oxide, wherein the support has a surface area greater than 50m2 /gm, and a porosity greater than...
3895050 Disposal of waste materials from unsaturated nitrile  
A method of recovering and disposing of waste materials from a plant for manufacturing unsaturated aliphatic nitriles or aromatic nitriles whereby waste water, unreacted ammonia and by-products...
3873595 Production of o-phthalodinitrile  
A catalyst useful in preparing o-phthalodinitrile from o-xylene comprises antimony oxide and vanadium oxide and/or antimony vanadate. The antimony oxide is present as β-antimony tetroxide.
3870743 Preparation of aromatic dinitriles  
In the production of nitriles of aromatic dicarboxylic acids by the reaction of alkyl-substituted benzenes with oxygen and ammonia at elevated temperatures, the improvement which comprises...
3868400 Process for vapor phase ammoxidation  
In the vapor phase ammoxidation of organic compounds to form nitriles where a reactant stream of ammonia, oxygen, and organic reactant is passed over catalyst, the improvement which comprises...
3699147 PROCESS FOR PREPARING NITRILES  
A process for the production of a nitrile having three to 12 carbon atoms per molecule by contacting at a temperature of 400° to 500° C and a contact time of 10 to 0.1 seconds a gaseous mixture o...
3544617 PROCESS FOR THE MANUFACTURE OF AROMATIC NITRILES  
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