C07C51/44

REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION

A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, and contacting the solution with a polymer-bound polyol.

REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION

A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, and contacting the solution with a polymer-bound polyol.

REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION

A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, and contacting the solution with a polymer-bound polyol.

SYSTEM AND METHOD FOR TWO-STEP SIMULTANEOUS CONVERSION OF CARBON DIOXIDE (CO2) AND HYDROCARBON CONTAINING AT LEAST ONE HYDROXY GROUP

Proposed is a two-pot-two-step simultaneous conversion system for carbon dioxide and a hydrocarbon containing at least one hydroxy group and a method thereof. The system integrates a process of producing a metal salt that is a dehydrogenated form of the hydrocarbon, hydrogen, and water by reacting a hydrocarbon containing at least one hydroxy group in the presence of water and a metal oxalate, and a process of converting carbon dioxide or carbon dioxide-derived carbonate into formate by hydrogenation, thereby increasing energy efficiency while maintaining a higher hydrocarbon conversion rate and a higher carbon dioxide conversion rate than the one-pot conversion system for hydrocarbon and carbon dioxide.

SYSTEM AND METHOD FOR TWO-STEP SIMULTANEOUS CONVERSION OF CARBON DIOXIDE (CO2) AND HYDROCARBON CONTAINING AT LEAST ONE HYDROXY GROUP

Proposed is a two-pot-two-step simultaneous conversion system for carbon dioxide and a hydrocarbon containing at least one hydroxy group and a method thereof. The system integrates a process of producing a metal salt that is a dehydrogenated form of the hydrocarbon, hydrogen, and water by reacting a hydrocarbon containing at least one hydroxy group in the presence of water and a metal oxalate, and a process of converting carbon dioxide or carbon dioxide-derived carbonate into formate by hydrogenation, thereby increasing energy efficiency while maintaining a higher hydrocarbon conversion rate and a higher carbon dioxide conversion rate than the one-pot conversion system for hydrocarbon and carbon dioxide.

Levulinic acid purification

The present invention refers to a process for the purification of levulinic acid, an aqueous solution comprising levulinic acid and a process for the production of levulinic acid.

Levulinic acid purification

The present invention refers to a process for the purification of levulinic acid, an aqueous solution comprising levulinic acid and a process for the production of levulinic acid.

Formic acid formation from a carbon dioxide source

The disclosure concerns a process for producing formic acid, having (a) a carbon capture step in which a source of carbon dioxide is contacted with an amine solution in a closed-top scrubber, to obtain an ammonium bicarbonate solution; (b) inducing crystallization in the ammonium bicarbonate solution to obtain a concentrated ammonium bicarbonate solution; (c) subjecting the concentrated ammonium bicarbonate solution to a hydrogenation step to obtain an ammonium formate; and (d) heating the ammonium formate to a temperature in the range of 50-150° C., to obtain a gaseous product containing the amine and a liquid product stream containing formic acid. The source of carbon dioxide has a carbon dioxide content of at least 95 vol % and the amine used in step (a) and reformed in step (d) has a partial vapour pressure above a 40 wt % solution of the amine in water at 20° C. of at least 40 kPa. The disclosure further concerns a system for performing the process.

RENEWABLE CHEMICAL PRODUCTION ENGAGING METATHESIS AND MICROBIAL OXIDATION
20220356131 · 2022-11-10 · ·

A process for combined renewable 1-decene and renewable carboxylic diacid production from a fatty acid ester containing feedstock, wherein the feedstock is first subjected to metathesis reaction conditions, recovery of 1-decene and then to microbial oxidation to yield diacids in a fermentation broth. Diacids of unusual carbon chains lengths are thereby obtainable.

RENEWABLE CHEMICAL PRODUCTION ENGAGING METATHESIS AND MICROBIAL OXIDATION
20220356131 · 2022-11-10 · ·

A process for combined renewable 1-decene and renewable carboxylic diacid production from a fatty acid ester containing feedstock, wherein the feedstock is first subjected to metathesis reaction conditions, recovery of 1-decene and then to microbial oxidation to yield diacids in a fermentation broth. Diacids of unusual carbon chains lengths are thereby obtainable.