Abstract: An analyzer for detection of a target compound in a complex gas mixture in the gas phase includes a detector for detecting the target compound and further has a sensing cavity. The detector is arranged in the sensing cavity. The analyzer also has a separate first membrane that is equipped to close the cavity and simplifies the composition of the complex gas mixture into a first gas mixture, wherein the first gas mixture includes the first target compound and wherein the first membrane is equipped to let the first gas mixture traverse through the first membrane into the sensing cavity. The detector is equipped to detect the first target compound.

Abstract: A process for producing hydrogen or ammonia is disclosed. Steam (202) and a metal or a metal-containing compound (in the case of ammonia production, a metal nitride) are provided to a reaction zone (213) and reacted under conditions for obtaining gaseous hydrogen or ammonia, respectively. The metal or metal-containing compound is provided in the form of nanoparticles and/or nanodroplets with a BET surface area of at least 1.0 m2/g. The nanoparticles and/or nanodroplets may be produced in-situ, either by rapid cooling of a stream of a vapor (203) of the metal or metal-containing compound in a formation zone (212), or by feeding a stream of a precursor into the formation zone (212) and reacting the precursor with a reactant gas in the formation zone to obtain nanoparticles and/or nanodroplets.