The present invention relates to a method for producing an aldehyde by a hydroformylation reaction of reacting an olefin with hydrogen and carbon monoxide in the presence of a Group 8 to 10 metal-phosphine complex catalyst, including the following steps (1) and (2): (1) a step of oxidizing by withdrawing a reaction solution having accumulated therein a high-boiling-point byproduct from a reaction zone and bringing the withdrawn reaction solution into contact with an oxygen-containing gas, and (2) a step of, after the step (1), mixing a poor solvent and hydrogen with the reaction solution, then crystallizing the Group 8 to 10 metal-phosphine complex catalyst by crystallization, and recovering the crystallized complex catalyst from the reaction solution.

Selective hydrogenation processes are disclosed that can upgrade impure feeds, such as those obtained from biomass and containing a number of small (e.g., 2-6 carbon atom) molecules having aldehyde and/or ketone carbon atoms. For example, whereas glycolaldehyde and its methylated derivative, hydroxyacetone (acetol) are both high value intermediates for certain downstream processing reactions, they are normally recovered in a condensate from pyrolysis of carbohydrates (e.g., aldose-containing sugars) together with glyoxal and its methylated derivative, pyruvaldehyde. The selective hydrogenation of these compounds bearing two carbonyl carbon atoms, without over-hydrogenation to ethylene glycol and propylene glycol, can increase the concentration of the desired intermediates. These beneficial effects of selective hydrogenation may be achieved through the use of a hydrogenation catalyst comprising noble metals such as Ru and Pt.

The present disclosure relates to an organometallic framework modified using a compound having a hydroxyl group (—OH), a catalyst for a hydrogenation reaction including the same, and a method of manufacturing the same. The catalyst according to the present disclosure has high activity to the hydrogenation reaction even at a low temperature of 30 to 40° C., thus making low-grade waste heat usable.

Methods of making N-hydroxyalkylated polyamines are provided, in which the method includes reacting a polyamine comprising Formula (XXIV): ##STR00001##
with a cyclic oxide to produce the N-hydroxyalkylated polyamine, where R.sup.1 and R.sup.2 are independently a —C or —CH group; R.sup.3 is an aliphatic hydrocarbyl; and R.sup.4 and R.sup.5 are independently acyclic hydrocarbyls, or are covalently connected to form an unsaturated cyclic hydrocarbyl.

Methods of making N-hydroxyalkylated polyamines are provided, in which the method includes reacting a polyamine comprising Formula (XXIV): ##STR00001##
with a cyclic oxide to produce the N-hydroxyalkylated polyamine, where R.sup.1 and R.sup.2 are independently a —C or —CH group; R.sup.3 is an aliphatic hydrocarbyl; and R.sup.4 and R.sup.5 are independently acyclic hydrocarbyls, or are covalently connected to form an unsaturated cyclic hydrocarbyl.

The disclosure relates to dicarbonyl complexes of ruthenium and osmium with bi- and tridentate nitrogen and phosphine ligands. The disclosure relates to methods for preparing these complexes and the use of these complexes, isolated or prepared in situ, as catalysts for reduction reactions of ketones and aldehydes both via transfer hydrogenation or hydrogenation with hydrogen.

The present invention relates generally to methods for producing detergent compounds from waste plastic feedstocks. More specifically, the invention relates to methods for producing detergent intermediates, including alkylbenzenes, paraffins, olefins, oxo alcohols, and surfactant derivatives thereof from waste plastic feedstock.

The present invention relates generally to methods for producing detergent compounds from waste plastic feedstocks. More specifically, the invention relates to methods for producing detergent intermediates, including alkylbenzenes, paraffins, olefins, oxo alcohols, and surfactant derivatives thereof from waste plastic feedstock.

The present disclosure provides petrochemical processing methods and systems, including ethylene conversion processes and systems, for the production of higher hydrocarbon compositions, for example liquid hydrocarbon compounds, with reduced amount of unsaturated hydrocarbons.

The present disclosure provides petrochemical processing methods and systems, including ethylene conversion processes and systems, for the production of higher hydrocarbon compositions, for example liquid hydrocarbon compounds, with reduced amount of unsaturated hydrocarbons.