A reactor includes a reactor vessel and one or more reaction tubes A number of tube sections of the one or more reaction tubes in each case run between a first region and a second region in the reactor vessel. For the electrical heating of the tube sections, the tube sections in the first region can be electrically connected to (a) current connection(s) of a current source. In the first region, current feed arrangements are provided; in each case one or in each case one group of the tube sections are electrically connected, and each comprise (a) contact passage(s) that in each case adjoin(s) at least one of the tube sections in the first region. A wall of the contact passages in each case is connected to a current feed element that has a rod-shaped section that runs at a wall passage through a wall of the reactor vessel.

A reactor for carrying out a chemical reaction, which has a reactor vessel and one or more reaction tubes, wherein power input elements for electrical heating of the reaction tube(s) are guided into the reactor vessel. It is provided that the power input elements each have a rod-shaped section that, in each case, runs at a wall passage through a wall of the reactor vessel in such a way that a connection chamber into which the rod-shaped sections project is arranged outside the reactor vessel and adjacently to the wall of the reactor vessel through which the rod-shaped sections run at their wall passages, and that cooling panels through which a cooling fluid can flow are provided in the connection chamber and are arranged between at least two or between at least two groups of the rod-shaped sections that project into the connection chamber.

The invention relates to the use of a reactor, methods, and devices for the quantitative recovery of molecular hydrogen from solid, liquid, or gaseous substances which contain hydrogen and which have heteroatoms, as well as to reactors. In this case, the reactors have material containing chromium. The subject matter of the invention also includes the use of the reactor, the method, and the device for the compound-specific or component-specific measurement of the isotope ratio (δ.sup.2H) of hydrogen using online apparatuses.

Provided is an accommodation body that accommodates a raw material including a hydride from which a hydrogen-containing gas is capable of being obtained by subjecting the raw material to a dehydrogenation reaction. The raw material and a dehydrogenation product produced in combination with the hydrogen-containing gas by the dehydrogenation reaction are capable of being loaded together in an internal space.

The present disclosure relates to a catalyst composition comprising: (a) nickel; (b) at least one promoter selected from Cu Zn, Mo, Co, Mg, Ce, Ti, Zr, Fe, Pd, Ag, Pt, or combinations thereof; and (c) a support material, wherein, the nickel loading is in the range of 6-19 wt % and the at least one promoter loading is in the range of 0.2-5 wt % with respect to the support material. The present disclosure further discloses a process for preparing a catalyst composition and a process each for the production of hydrogen gas and carbon nanotubes. Also disclosed herein, is use of a catalyst composition for obtaining hydrogen gas and carbon nanotubes.

The present subject matter relates to co-producing H-CNG and CNTs. The process comprises adding catalyst to a first reactor (110) and activating the catalyst and performing a reaction to obtain H-CNG and CNTs. At a first predetermined time after reaction has progressed in the first reactor (110), catalyst is added to a second reactor (120), activated, and then the reaction proceeds simultaneously in the first reactor (110) and second reactor (120). The use of multiple reactors with staggered start times helps in the continuous co-production of H-CNG and CNTs. Catalyst preparation process is integrated with the co-production process for efficient heat recovery. The first and second reactors are fluidized bed reactors with cantilever trays having weirs for controlling the residence time of the catalyst in the reactor and thereby controlling the purity of CNTs produced.

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 heating mechanism that heats the dehydrogenation reaction unit by using electric power; and an electric power supply unit that supplies at least one of electric power based on renewable energy and electric power based on thermal power generation equipped with carbon dioxide capture and storage to the heating mechanism.

A production system includes a first reaction chamber and a second reaction chamber. The first reaction chamber is configured to receive a first hydrocarbon stream therein through an input port and to form carbon seeds and hydrogen gas therein via hydrocarbon pyrolysis of the first hydrocarbon stream. The second reaction chamber includes a first input port and a second input port. The second reaction chamber is configured to receive the carbon seeds through the first input port and a second hydrocarbon stream through the second input port, and to form carbon product elements and additional hydrogen gas in the second reaction chamber via hydrocarbon pyrolysis of the second hydrocarbon stream. The carbon product elements represent the carbon seeds with additional carbon structure grown on the carbon seeds.

A system and a method for producing hydrogen and electrical power from an aqueous ammonia solution are provided. An exemplary system includes a distillation unit to produce ammonia gas from the aqueous ammonia solution, a compression unit to boost the pressure of the ammonia gas, a membrane separator to catalytically convert the ammonia gas to nitrogen and hydrogen and remove the hydrogen as a permeate, and a micro turbine to combust a retentate to generate energy.

A hydrogen production apparatus includes: a first furnace configured to heat a mixed gas of a raw material gas, which contains at least methane, and hydrogen to 1,000° C. or more and 2,000° C. or less; and a second furnace configured to accommodate a catalyst for accelerating a reaction of a first gas generated in the first furnace to a nanocarbon material, and to maintain the first gas at 500° C. or more and 1,200° C. or less.