Eastman-kodak Company

Thomas H Larkins, Jr

Mark Rule

Donald W Lane

Gerald Charles Tustin

Guy R Steinmetz

Gether Irick, Jr

David A Young

Brent Alan Tennant

Gordon C Newland

Victor H Agreda

Stanley W Polichnowski

Disclosed is a process comprising preparing a product stream rich in naphthalene and 2-monoiodonaphthalene comprising contacting hydrogen and a feed stream containing iodonaphthalenes selected from the group consisting of monoiodonaphthalene, diiodonaphthalene and triiodonaphthalene and mixtures thereof with an X or Y type zeolite containing an ion selected from the group consisting of sodium, potassium and rubidium and a metal selected from the group selected from the group consisting of palladium, platinum, rhodium and ruthenium.

Process for preparing a product stream rich in naphthalene and

A method of preparing an ether corresponding to the structure ##STR1## comprising reacting an aromatic iodine compound corresponding to the structure ##STR2## with methanol in the presence of a basic compound a copper catalyst and an amount of hydrogen which is effective to lower the oxidation state of the copper catalyst.

Method of preparing aromatic ethers from iodoaromatic compounds

Process for the preparation of ethylidene diacetate and/or ethyl acetate by hydrogenating acetic anhydride in the presence of a homogeneous ruthenium catalyst, methyl iodide and, optionally, lithium iodide. The process can also be utilized to hydrogenate mixtures of acetic anhydride and ethylidene diacetate to produce ethyl acetate.

Preparation of ethyl acetate

Disclosed is a process for the co-production of aromatic carboxylic esters and alkyl iodides by the carbonylation of aromatic iodides in the presence of an alkanol and a palladium catalyst.

Process for the coproduction of aromatic carboxylates and alkyl iodides

Disclosed is a process for the co-production of aromatic carboxylates and alkyl iodides by the carbonylation of aromatic iodides in the presence of an alkanol and a nickel catalyst.

Process for the co-production of aromatic carboxylates and alkyl iodides

The invention relates to a process for isomerizing and transiodinating iodoaromatic compounds over a non-acid catalyst.

Process for preparing iodinated aromatic compounds

A process for iodinating an aromatic compound in which a source of iodine is reacted with the aromatic compound in the presence of oxygen over a non-acid catalyst wherein the aromatic compound has a fluoro, chloro, bromo, iodo, hydroxy or cyano group.

Process for preparing iodinated substituted aromatic compounds

This invention relates to a process for iodination of aromatic compounds in the presence of oxygen over a zeolite catalyst.

Processes for preparing iodinated aromatic compounds

This invention relates to a novel carbonylation process for the production of aromatic carboxylic acids or esters of aromatic. More particularly, this invention relates to a process for the carbonylation of aromatic iodides or bromides with carbon monoxide in the presence of a palladium catalyst promoted with a Group VIB carbonyl and in the presence of an alcohol or water in a base reaction medium having a pKa greater than about 8. When the alcohol is used the product is the ester. When water is used the product is the carboxylic acid.

Carbonylation process for the production of aromatic acids or esters

This invention relates to a novel carbonylation process for the production of aromatic carboxylic acids. More particularly, this invention relates to a process for the carbonylation of aromatic iodides with carbon monoxide in the presence of a nickel catalyst in a hydrocarbon carboxylic acid reaction medium to prepare aromatic carboxylic acids.

Carbonylation process for the production of aromatic acids

The present invention provides a process for the preparation of ethyl acetate by hydrogenating acetic anhydride, or mixtures of acetic anhydride and ethylidene diacetate, in the presence of a Raney nickel catalyst and an organic sulfonic acid to produce ethyl acetate.

The present invention provides a process for the recovery of rhodium, lithium, and iodine values from tar which is generated during carbonylation reactions. The process comprises sequentially extracting the tar with water and then leaching the remaining tar with acetic acid, burning the resulting residue, and recycling the resulting rhodium-enriched residue to the reaction process. Preferably, the process further comprises the recovery of iodine values by the incineration of the acetic acid leachate and treatment of the off-gas with aqueous alkali hydroxide. Lithium values are recovered by evaporating water from the aqueous phase of the water extraction step and recycling the resulting residue to the reaction process.

Catalyst recovery process from tar from carbonylation reactions

The present invention provides a process for the preparation of acetaldehyde from hydrogen, carbon monoxide, and methanol. The process comprises conducting the reaction in the presence of a catalyst system comprising cobalt, platinum, and iodide. The cobalt catalyst component is present in a concentration of about 0.01 to 1 weight percent, the platinum catalyst component is present in a concentration of about 0.03 to 3 weight percent, and the iodide catalyst component is present in a concentration of about 0.1 to 40 weight percent, as defined herein. The weight ratio of cobalt to platinum is about 1:0.3 to 1:35. The process is preferably conducted at a temperature of 160.degree.-230.degree. C. and a pressure of 10,000-70,000 kPa.

Process for the preparation of acetaldehyde

The preparation of acetic anhydride by the carbonylation of methyl acetate in the presence of rhodium, an iodine compound and lithium at elevated temperatures and pressures is improved by the inclusion of about 2 to 7 volume percent hydrogen in the gas fed to the carbonylation reactor. The presence of hydrogen suppresses tar formation and increases reaction rate.

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Kingsport, TN, United States of America

Thomas H Larkins, Jr