Abstract: This invention utilizes a mixed salt transesterification catalyst in a transesterification process for the production of esters of alkyl(meth)acrylate monomers.

Abstract: Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alkanes to corresponding alkenes at flame temperatures and at short contact times in combination with one or more oxidation catalysts for catalytically converting the corresponding alkenes to further corresponding oxygenated products using short contact time reactor conditions.

Abstract: Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a hybrid catalyst system and a hybrid process which comprises steam cracking of alkanes, to corresponding alkenes in combination with one or more oxidation catalysts for catalytically converting the corresponding alkenes to further corresponding oxygenated products using short contact time reactor conditions.

Abstract: Unsaturated carboxylic acids (and esters thereof) are prepared directly from alkanes (and alcohols) utilizing vapor phase oxidative esterification.

Abstract: Unsaturated carboxylic acids (and esters thereof) are prepared directly from alkanes (and alcohols) utilizing vapor phase oxidative esterification.

Abstract: The inventors have discovered catalyst ignition promoters comprising one or more activated metals. The catalyst ignition promoters are easily prepared from a number of metal sources, including spent catalysts, are activated quickly and provide effective catalyst ignition independent of the quality of the metals that comprise the catalytic converter. The one or more activated metals comprising the ignition promoter are prepared by contacting them with one or more chemical treatments. The activated metal components are prepared into suitable articles, referred to as ignition strips, that are placed in contact with one or more oxidative coupling catalysts, typically in the form of gauzes. The ignition promoters reduce the activation energy for catalyst ignition (also referred to “light off”), enabling ignition of catalyst gauzes that are new, used, contaminated, damaged and combinations thereof at a relatively low auto-ignition temperatures.

Abstract: Structured catalysts useful for oxidizing alkanes, alkenes and combinations of alkanes and alkenes are described. The structure catalysts comprise one or more mixed metal oxide catalysts having a three dimensional structure that is self-supporting and that facilitates movement of gas phase reactants and products and one or more mixed metal oxide catalysts deposited on a three dimensional form of continuous unitary structures having openings that facilitates movement of gas phase reactants and products.

Abstract: Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared directly from corresponding alkanes utilizing using a mixed bed catalyst at flame temperatures in a short contact time reactor.

Abstract: A method is provided herein for purifying (meth)acrylic acid to provide a purified (meth)acrylic acid product having a low aldehyde concentration and not more than 0.2 wt % water. One embodiment of the method includes distilling (meth)acrylic acid in the presence of an aldehyde treating compound. Another embodiment of the method includes also distilling crude (meth)acrylic acid in the presence of a reactive drying agent. (Meth) acrylic acid produced in this manner is especially suitable for use in specialty (meth)acrylic acid polymers, such as for example superabsorbent polymers, binders, and ethylene-(M)AA copolymers.

Abstract: Unsaturated carboxylic acids (and esters thereof) are prepared directly from alkanes (and alcohols) utilizing vapor phase oxidative esterification.

Abstract: A method which reduces iron contamination of a system which receives ammonia from an ammonia recovery process by one or more of the following techniques: a) Physically separating iron oxide, iron containing colloidal particles, and liquid droplets from the gas stream; b) Preventing AC from depositing on piping via elimination of condensation, thereby preventing corrosion of the piping; or c) Installing piping and equipment that is not susceptible to corrosive attack by AC, thereby eliminating the source of iron contamination.

Abstract: A high yield process for the production of methyl methacrylate or methacrylic acid and an apparatus for increasing the yield in a process for the production of methyl methacrylate or methacrylic acid are disclosed.

Abstract: An improved process for ammonia recovery is provided for the recovery of substantially pure ammonia for use in industrial processes. In this improved method, specific raw materials and/or specific materials of construction are used. Overall efficiency and operational cost savings are increased as a result of the process of the present invention.

Abstract: A method which reduces iron contamination of a system which receives ammonia from an ammonia recovery process by one or more of the following techniques:

Abstract: The present invention provides a novel process of recovering unreacted ammonia from a reactor effluent. This novel process includes at least the following steps: (1) quenching a reactor effluent containing ammonia with a first aqueous ammonium phosphate quench solution, wherein the pH of the solution is less than about 3.5, thereby absorbing ammonia to form a second aqueous ammonium phosphate solution richer in ammonium (NH4+) ions than the first solution but substantially free of dissolved CO2, (2) heating the second solution to an elevated temperature to reduce the amount of ammonium ions present to substantially the same level present in the first solution and thereby generate a vaporous stream containing ammonia, (3) recycling said vaporous stream containing ammonia to a reaction zone in a manner that minimizes the contamination of the reaction zone.

Abstract: Hydrogen cyanide or ammonia present in a gaseous stream is decomposed catalytically in the presence of oxygen at relatively low temperature by contact with carbonaceous adsorbents doped with oxides of first row transition metals, silver or lanthanide elements, preferably with cobalt, chromium, manganese, silver, and cerium, in the presence or absence of a gaseous reducing agent such as a hydrocarbon or a volatile carboxylic acid.

Abstract: A method for inhibiting the corrosion of metals exposed to aqueous mixtures of sulfuric acid and hydrocyanic acid by the use of iron salts.