A process for producing isomerized olefins, branched aldehydes and branched alcohols through isomerization, hydroformylation and hydrogenation.

Process for the hydroformylation of olefins using a cobalt pre-catalyst.

A method for preparing an aldehyde including forming a reaction product including an aldehyde by reacting an olefin-based compound with a synthetic gas in a hydroformylation reactor in the presence of a hydroformylation catalyst; introducing the reaction product including the aldehyde to a vaporizer; separating low-boiling point components of the reaction product from an upper part of a vaporizer catch pot included in the vaporizer; separating high-boiling point components of the reaction product from a lower part of the vaporizer catch pot; and recirculating at least a portion of the low-boiling point components separated from an upper part of the vaporizer catch pot back to the vaporizer.

A recycle content oxo glycol and method of making a recycle content oxo glycol wherein the recycle content is derived directly or indirectly from the cracking of recycle content pyrolysis oil and/or gas. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.

A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of methylcyclohexane as a reaction solvent and a catalyst system comprising a rhodium complex and a substituted or unsubstituted diphosphine ligand. The use of the methylcyclohexane increases the reaction rate while also giving a high yield of 4-hydroxybutyraldehyde compared to 3-hydroxy-2-methylpropionaldehyde and improving the separation of the hydroxyaldehyde products from the catalyst system.

A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of methylcyclohexane as a reaction solvent and a catalyst system comprising a rhodium complex and a substituted or unsubstituted diphosphine ligand. The use of the methylcyclohexane increases the reaction rate while also giving a high yield of 4-hydroxybutyraldehyde compared to 3-hydroxy-2-methylpropionaldehyde and improving the separation of the hydroxyaldehyde products from the catalyst system.

This invention relates to a composition comprising a compound having a formula of M2(CO)m(PF3)n, wherein M is a group 9 metal (such as cobalt), m is 1, 2, 3, 4, 5, 6, or 7, n is 1, 2, 3, 4, 5, 6, or 7, and the sum of m and n is 8, that may be used as a hydroformylation pre¬catalyst for converting (such as hydroformylating) olefinic feeds, especially complex feeds comprising internal olefins and high degrees of branching.

A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C.sub.4 to C.sub.20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.

A process for producing branched alcohols through isomerization, hydroformylation and hydrogenation.

Catalyst preforming rates during hydroformylation may decrease in the presence of carbonates. Carbonate mitigation methods may comprise treating a hydroformylation reaction product with an aqueous carboxylic acid under oxidizing conditions to form a deactivated catalyst aqueous solution having a pH of about 4 or less, reducing the hydroformylation reaction product to form a reduced reaction product, conveying a gas stream through the reduced reaction product to strip carbon dioxide therefrom, contacting caustic aqueous solution with the stripped reduced reaction product to form partially spent caustic aqueous solution, combining at least a portion of the partially spent caustic aqueous solution with the deactivated catalyst aqueous solution to form a combined aqueous mixture sufficiently acidic to decompose carbonate, and extracting a Group 9 transition metal carboxylate from the combined aqueous mixture into an organic phase.