According to an embodiment of the present disclosure, a method of controlling a rate of hydrogen release from a decomposition reaction of a hydrogen carrier includes: relating the rate to a temperature and a composition of the metastable hydrogen carrier; determining the composition of the metastable hydrogen carrier; and adjusting the temperature according to the relating of the rate and the determining of the composition.

According to an embodiment of the present disclosure, a method of controlling a rate of hydrogen release from a decomposition reaction of a hydrogen carrier includes: relating the rate to a temperature and a composition of the metastable hydrogen carrier; determining the composition of the metastable hydrogen carrier; and adjusting the temperature according to the relating of the rate and the determining of the composition.

The invention provides particulate compositions, which generate hydrogen when contacted with water, the compositions comprising particles of: aluminium; one or more metal oxides; and one or more chloride salts of alkali metals or alkaline earth metals.

The invention also provides methods of preparing such compositions and methods of generating hydrogen by contacting the compositions with water.

A gas turbine engine includes a core engine that includes a core flow path where air is compressed in a compressor section, communicated to a combustor section, mixed with an ammonia based fuel and ignited to generate a high energy combusted gas flow that is expanded through a turbine section. The turbine section is mechanically coupled to drive the compressor section. An ammonia flow path communicates an ammonia flow to the combustor section. A cracking device is disposed in the ammonia flow path. The cracking device is configured to decompose the ammonia flow into a fuel flow containing hydrogen (H2). At least one heat exchanger is upstream of the cracking device that provides thermal communication between the ammonia flow and a working fluid flow such that the ammonia fluid flow accepts thermal energy from the working fluid flow.

This invention relates to a supported catalyst for synthesizing ammonia (NH.sub.3) from nitrogen gas (N.sub.2) and hydrogen gas (H.sub.2), method of making the support, and methods of decorating the support with the catalyst.

Catalysts for NH.sub.3 cracking and/or synthesis generally include barium calcium aluminum oxide compounds decorated with ruthenium, cobalt, or both. These catalysts can be bonded to a metal structure, which improves thermal conductivity and gas conductance.

The present disclosure is related to the field of chemistry and provides methods and devices for stimulation of endothermic reactions in gas phase with high activation barriers by nanosecond pulsed electrical discharge. It can be used for, e.g., CO.sub.2 functionalization of methane, H.sub.2S dissociation, hydrogen and syngas production, for processing ammonia synthesis and dissociation, etc. Some embodiments include methods and devices associated with the stimulation of plasma chemical reactions with nanosecond pulse electric discharge in the presence of gas flow.

A method for preparing hydrogen gas includes a decomposition step, a first adsorption step, a second adsorption step, a first regeneration step, a third heat-exchange step, and a second regeneration step.

The invention relates to a carbon dioxide-neutral bio converter facility (BKA) according to FIG. 1, comprising: —at least one bio converter (BK) for a single-stage or multistage production of biogas (BG) by fermenting biomass (BM) in a fermentation liquid (GF) which is moved using agitation means in the presence of elemental hydrogen, hydrogenotrophic and methanogenic archaea, and activated carbon compositions (K; KM), —an ammonia store (NH3) which, by means of an ammonia line (NH3L), is connected to—an ammonia cracker (AC) for producing hydrogen and nitrogen (H2/N2) by catalytically cracking ammonia, and—a line (LH2/N2) for introducing the generated hydrogen (H2) or the hydrogen-nitrogen mixture (H2/N2) into the at least one bio converter (BK), and/or—a device (VBK) for treating the activated carbon compositions (K; KM) with hydrogen (H2) at a high pressure, comprising a pressure line (25) and an injection lance (28) for injecting the hydrogen-containing carbon compositions (K; KM) into the fermentation liquid (GF), wherein the ammonia is produced using renewable energy, and the ammonia cracker (AC) is operated using the renewable energy. The invention also relates to a conversion method, to a method for injecting hydrogen-containing carbon compositions (H2K; H2KM), and to the use of the fermentation products (KBM).

The disclosure describes a system for generating hydrogen gas from a hydrocarbon through pyrolysis with reduced soot formation and increased carbon loading. The system includes one or more pyrolysis reactors configured to generate the hydrogen gas from the hydrocarbon through pyrolysis. Each pyrolysis reactor of the one or more pyrolysis reactors includes one or more fibrous substrates and a concentration sensor downstream of at least one fibrous substrate of the one or more fibrous substrates. Each fibrous substrate of the one or more fibrous substrates defines a deposition surface for carbon generated from the pyrolysis of the hydrocarbon and includes a plurality of fibers configured to maintain chemical and structural stability between 850° C. and 1300° C. The concentration sensor is configured to measure a concentration of at least one of a hydrocarbon byproduct or a hydrocarbon soot precursor, such as acetylene.