Dihydrogen generator (5) comprising a chamber (10) and a catalytic system (15), the catalytic system being rigidly fastened to the chamber in a removable manner and comprising a catalysis housing (25) containing a catalyst (205) for the reaction for generating dihydrogen from a reagent (405) chosen from a hydride, a liquid organic hydrogen carrier and mixtures thereof, the chamber defining a chamber internal space (45), the catalysis housing being positioned at least partly in the chamber internal space.

Dihydrogen generator (5) comprising a chamber (10) and a catalytic system (15), the catalytic system being rigidly fastened to the chamber in a removable manner and comprising a catalysis housing (25) containing a catalyst (205) for the reaction for generating dihydrogen from a reagent (405) chosen from a hydride, a liquid organic hydrogen carrier and mixtures thereof, the chamber defining a chamber internal space (45), the catalysis housing being positioned at least partly in the chamber internal space.

The invention relates to a method for storing and re-releasing dihydrogen (1) comprising at least: a step of generating hydrogen (G) by dehydrogenating hydroxyl groups of dipropylene glycol into respective carbonyl groups, in order to produce a dehydrogenated substrate (SD) and gaseous dihydrogen (H.sub.2), a step of regenerating (R) at least a portion of the dipropylene glycol (DG), by hydrogenating said carbonyl groups into respective hydroxyl groups by means of gaseous dihydrogen (H.sub.2).

The invention is particularly suitable for storing dihydrogen as an energy carrier.

The invention relates to a method for storing and re-releasing dihydrogen (1) comprising at least: a step of generating hydrogen (G) by dehydrogenating hydroxyl groups of dipropylene glycol into respective carbonyl groups, in order to produce a dehydrogenated substrate (SD) and gaseous dihydrogen (H.sub.2), a step of regenerating (R) at least a portion of the dipropylene glycol (DG), by hydrogenating said carbonyl groups into respective hydroxyl groups by means of gaseous dihydrogen (H.sub.2).

The invention is particularly suitable for storing dihydrogen as an energy carrier.

The present invention concerns a process for producing hydrogen by partial dehydrogenation of an organic liquid, said process comprising a step of supplying at least one organic liquid having a Degree of Hydrogenation DHplus, a step of partially dehydrogenating said liquid, a step of recovering firstly gaseous hydrogen and secondly said organic liquid having a Degree of Hydrogenation DHminus, and wherein the ratio DHplus/DHminus is between 1 and 25, endpoints excluded.

The invention likewise concerns a hydrogenation/dehydrogenation cycle comprising at least the process of the invention for producing hydrogen by partial dehydrogenation of an organic liquid and at least one hydrogenation reaction of said organic liquid.

The present invention concerns a process for producing hydrogen by partial dehydrogenation of an organic liquid, said process comprising a step of supplying at least one organic liquid having a Degree of Hydrogenation DHplus, a step of partially dehydrogenating said liquid, a step of recovering firstly gaseous hydrogen and secondly said organic liquid having a Degree of Hydrogenation DHminus, and wherein the ratio DHplus/DHminus is between 1 and 25, endpoints excluded.

The invention likewise concerns a hydrogenation/dehydrogenation cycle comprising at least the process of the invention for producing hydrogen by partial dehydrogenation of an organic liquid and at least one hydrogenation reaction of said organic liquid.

Provided is a hydrogen supply system that supplies hydrogen. The hydrogen supply system includes: a dehydrogenation reaction unit that subjects a raw material including a hydride to a dehydrogenation reaction to obtain a hydrogen-containing gas; a hydrogen purification unit that removes a dehydrogenation product from the hydrogen-containing gas obtained in the dehydrogenation reaction unit to obtain a purified gas including high-purity hydrogen; and a degassing unit that removes an inorganic gas contained in the raw material on an upstream side of the dehydrogenation reaction unit in a flow of the raw material.

Provided is a hydrogen supply system that supplies hydrogen. The hydrogen supply system includes: a dehydrogenation reaction unit that subjects a raw material including a hydride to a dehydrogenation reaction to obtain a hydrogen-containing gas; a hydrogen purification unit that removes a dehydrogenation product from the hydrogen-containing gas obtained in the dehydrogenation reaction unit to obtain a purified gas including high-purity hydrogen; and a degassing unit that removes an inorganic gas contained in the raw material on an upstream side of the dehydrogenation reaction unit in a flow of the raw material.

A hydrogen composition having a recycle content value is obtained by processing a recycle content feedstock to make a recycle content hydrogen or by deducting from a recycle inventory a recycle content value applied to a hydrogen composition. At least a portion of the recycle content value in the feedstock or in an allotment obtained by a hydrogen manufacturer has its origin in recycled waste plastics.

Herein disclosed is a method of producing value-added product from light gases, the method comprising: (a) providing light gases comprising at least one compound selected from the group consisting of C1-C6 compounds and combinations thereof; (b) intimately mixing the light gases with a liquid carrier in a high shear device to form a dispersion of gas in the liquid carrier, wherein the dispersion is supersaturated with the light gases and comprises gas bubbles at least some of which have a mean diameter of less than or equal to about 5 micron(s); (c) allowing the value-added product to form and utilizing vacuum to extract unreacted light gases from the liquid carrier; (d) extracting the value-added product; wherein the value-added product comprises at least one component selected from the group consisting of higher hydrocarbons, hydrogen, olefins, alcohols, aldehydes, and ketones. A system for producing value-added product from light gases is also disclosed.