One variation of a method includes: ingesting an air sample captured during an air capture period at a target location for collection of a first mixture including carbon dioxide and a first concentration of impurities; conveying the first mixture through a liquefaction unit to generate a second mixture including carbon dioxide and a second concentration of impurities less than the first concentration of impurities; in a methanation reactor, mixing the second mixture with hydrogen to generate a first hydrocarbon mixture comprising a third concentration of impurities comprising nitrogen, carbon dioxide, and hydrogen; conveying the first hydrocarbon mixture through a separation unit configured to remove impurities from the first hydrocarbon mixture to generate a second hydrocarbon a fourth concentration of impurities less than the third concentration of impurities; and depositing the second hydrocarbon mixture in a diamond reactor containing a set of diamond seeds to generate a first set of diamonds.

A process for adsorbing impurities from hydrocarbon gas streams is disclosed. The process involves passing a hydrocarbon gas stream and a solid dry adsorbent under inert environment to a scrubbing chamber for adsorbing impurities from the hydrocarbon gas streams within the scrubbing chamber. The process adsorption of impurities in scrubbing chamber is carried under non-oxidative conditions to generate a clean product gas.

A process for adsorbing impurities from hydrocarbon gas streams is disclosed. The process involves passing a hydrocarbon gas stream and a solid dry adsorbent under inert environment to a scrubbing chamber for adsorbing impurities from the hydrocarbon gas streams within the scrubbing chamber. The process adsorption of impurities in scrubbing chamber is carried under non-oxidative conditions to generate a clean product gas.

The invention relates to the extraction of organic compounds from mixtures of said compounds with water, using a nanoporous carbon membrane. The invention can be used in any field where it is desired to separate an organic compound of interest from water, such as the drying of alcohols or alkanes.

The invention relates to the extraction of organic compounds from mixtures of said compounds with water, using a nanoporous carbon membrane. The invention can be used in any field where it is desired to separate an organic compound of interest from water, such as the drying of alcohols or alkanes.

A photoreactor having computer actuated input/output ports is operated by introducing reactant through an input port and collecting product through an output port, and upon closure of the input and output ports, treating photocatalyst within the photoreactor to remove intermediates limiting performance of the photocatalyst. Once the photocatalyst is regenerated, introduction of reactant to the photoreactor through the input port and collection of product from the output port can be resumed. The automated process does not require removal of catalyst from the photoreactor and significantly improves process economics.

A photoreactor having computer actuated input/output ports is operated by introducing reactant through an input port and collecting product through an output port, and upon closure of the input and output ports, treating photocatalyst within the photoreactor to remove intermediates limiting performance of the photocatalyst. Once the photocatalyst is regenerated, introduction of reactant to the photoreactor through the input port and collection of product from the output port can be resumed. The automated process does not require removal of catalyst from the photoreactor and significantly improves process economics.

The invention relates to a method for the heterogeneous catalysis of a reaction for the hydrogenation of a carbon oxide in the gaseous state, such as a methanation reaction, using, in a reactor (1), carbon dioxide and gaseous dihydrogen and at least one solid catalytic compound capable of catalyzing said reaction in a given temperature range T, comprising contacting said gaseous reactant and said catalytic compound in the presence of a heating agent, and heating the heating agent to a temperature within said temperature range T. The method is characterized in that the heating agent comprises a ferromagnetic material in the form of micrometric powder and/or wires, said ferromagnetic material being heated by magnetic induction by means of a field inductor, such as a coil (2) external to the reactor (1). According to one embodiment, the catalyst support for implementing said method comprises a ferromagnetic material in the form of wires of micrometric diameters, on the surface of which metal catalyst particles are deposited.

The invention relates to a method for the heterogeneous catalysis of a reaction for the hydrogenation of a carbon oxide in the gaseous state, such as a methanation reaction, using, in a reactor (1), carbon dioxide and gaseous dihydrogen and at least one solid catalytic compound capable of catalyzing said reaction in a given temperature range T, comprising contacting said gaseous reactant and said catalytic compound in the presence of a heating agent, and heating the heating agent to a temperature within said temperature range T. The method is characterized in that the heating agent comprises a ferromagnetic material in the form of micrometric powder and/or wires, said ferromagnetic material being heated by magnetic induction by means of a field inductor, such as a coil (2) external to the reactor (1). According to one embodiment, the catalyst support for implementing said method comprises a ferromagnetic material in the form of wires of micrometric diameters, on the surface of which metal catalyst particles are deposited.

A volume of natural gas including a volume of methane and a volume of other alkanes may be cleaned of the other alkanes using a steam reformer system to create synthesis gas.