Proposed is a catalyst complex having high activity for carbon dioxide conversion reaction that converts carbon dioxide to useful compounds through reaction of carbon dioxide and hydrocarbon containing at least one hydroxyl group, and a carbon dioxide conversion process using the same, wherein the catalyst complex includes, as an active metal in the catalyst complex, at least one of noble metals and at least one of transition metals other than noble metals, thereby having high activity for the carbon dioxide conversion reaction.

Proposed is a high-yield simultaneous conversion method for a hydrogen source and a carbon dioxide source. The method significantly increases a yield of a formate through conversion of carbon dioxide. To this end, a carbon dioxide source and a hydrocarbon containing one or more hydroxy groups undergo a simultaneous conversion reaction in the presence of a solvent containing one or more alcohols and having a pH of 10 to 14.

Proposed is a high-yield simultaneous conversion method for a hydrogen source and a carbon dioxide source. The method significantly increases a yield of a formate through conversion of carbon dioxide. To this end, a carbon dioxide source and a hydrocarbon containing one or more hydroxy groups undergo a simultaneous conversion reaction in the presence of a solvent containing one or more alcohols and having a pH of 10 to 14.

The concerns a process for producing formic acid, (a) a carbon capture step in which a source of carbon dioxide is contacted with an amine solution in an amine scrubber, to obtain an ammonium bicarbonate solution, where the carbon capture uses a chilled amine solution having a temperature in the range of 0-20 ° C.; (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 application further concerns a system for performing the process.

The concerns a process for producing formic acid, (a) a carbon capture step in which a source of carbon dioxide is contacted with an amine solution in an amine scrubber, to obtain an ammonium bicarbonate solution, where the carbon capture uses a chilled amine solution having a temperature in the range of 0-20 ° C.; (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 application further concerns a system for performing the process.

A method for producing carbon monoxide includes decomposing formic acid, in the presence of water, by hydrothermal reaction under conditions with a temperature T of 350° C. or less and a pressure P being equal to or more than the saturated vapor pressure of water at the temperature T.

A method for producing carbon monoxide includes decomposing formic acid, in the presence of water, by hydrothermal reaction under conditions with a temperature T of 350° C. or less and a pressure P being equal to or more than the saturated vapor pressure of water at the temperature T.

A method including collecting exhaust gas comprising carbon dioxide (CO.sub.2) at a wellsite to provide a collected exhaust gas, separating CO.sub.2 from the collected exhaust gas to provide a separated CO.sub.2, and forming formic acid utilizing at least a portion of the separated CO.sub.2. At least a portion of the formic acid can be utilizing in a wellbore servicing fluid (e.g., a fracturing fluid) introduced downhole via a wellbore. The exhaust gas can be produced during a wellbore servicing operation at the or another wellbore. A system for carrying out the method is also provided.

A method including collecting exhaust gas comprising carbon dioxide (CO.sub.2) at a wellsite to provide a collected exhaust gas, separating CO.sub.2 from the collected exhaust gas to provide a separated CO.sub.2, and forming formic acid utilizing at least a portion of the separated CO.sub.2. At least a portion of the formic acid can be utilizing in a wellbore servicing fluid (e.g., a fracturing fluid) introduced downhole via a wellbore. The exhaust gas can be produced during a wellbore servicing operation at the or another wellbore. A system for carrying out the method is also provided.

The invention relates to a method for catalytically producing an alkyl formate, wherein at least one alpha-hydroxy aldehyde, at least one alpha-hydroxy carboxylic acid, at least one carbohydrate, and/or at least one glycoside is reacted by means of a vanadium-oxygen compound, which contains vanadium in the oxidation stage +IV or +V, or a salt thereof as a catalyst in the solution, wherein the solution contains an alkanol, and the alkyl formate produced as a reaction product is separated from at least one other resulting reaction product. The catalyst which is reduced during the catalytic reaction is restored to its starting state in an oxidation process.