摘要:
The invention relates to a catalyst and to a process for hydrogenating organic compounds. In particular, the invention is directed to a process and catalyst for hydrogenating organic compounds with hydrogen. The organic compounds are subjected to hydrogenation in the presence of a catalyst comprising nitrogen-doped carbon nanotubes as a catalytically active component, wherein the proportion of nitrogen in the nanotubes is in the range of from about 0.05 to 20 wt. %.
摘要:
Process for the reduction of oxygen in aqueous chlorine- and/or chloride-containing solutions in the presence of a catalyst comprising nitrogen-doped carbon nanotubes.
摘要:
Apparatus for hydrogen chloride electrolysis, comprising a cathode that has a layer of nitrogen-doped carbon nanotubes having functional groups containing nitrogen.
摘要:
Apparatus for hydrogen chloride electrolysis, comprising a cathode that has a layer of nitrogen-doped carbon nanotubes having functional groups containing nitrogen.
摘要:
The present invention relates to a process comprising the steps a) synthesis of carbon nanotubes, b) optional inerting and c) cooling of the product. The process permits problem-free handling and packing of the carbon nanotube material that is produced.
摘要:
A cyclone reactor for producing a usable by-product as part of a recoverable slag layer, the reactor comprising a housing having an outer wall that defines a combustion chamber; an inlet configured to introduce a reactant into the reactor; a burner configured to combust the reactant in a flame zone near a central axis of the chamber; and an outlet configured to provide for the removal of the usable by-product from the housing; wherein the reactor is configured to combust a first portion of the reactant in an exothermic reaction in the flame zone; and wherein the reactor is configured to convert a second portion of the reactant in an endothermic reaction near the outer wall to produce the by-product as part of the slag layer.
摘要:
Electrochemical process for the reduction of molecular oxygen in alkaline solutions in the presence of nitrogen-doped carbon nanotubes, in which no hydrogen peroxide forms as a by-product of the reduction.
摘要:
The present invention provides a process for quenching a gaseous reaction mixture during the phosgenation of diamines in the gas phase to produce diisocyanates. The gaseous reaction mixture contains at least a diisocyanate, phosgene and hydrogen chloride. The quenching liquid is injected into the gas mixture continuously flowing out of a cylindrical reaction zone into the downstream cylindrical quenching zone with the aid of at least two spray nozzles which are arranged at the entrance to the quenching zone at equal distances along the circumference of the quenching zone.
摘要:
A cyclone separator (14) for use in a suction apparatus (4) of a hand-held power tool (2) includes a dirty air inlet (12), a suction ventilator (38) for aspirating, through a suction opening (8) which is connected with the dirty air inlet (12), abrasion particle-carrying suction air, a pure air outlet for letting out purified air, a vortex chamber (16) arranged between the dirty air inlet (12) and the pure air outlet, with the dirty air inlet (12) opening substantially tangentially into the vortex chamber (16) for generating a swirling stream in a direction toward the pure air extraction element (24), a collection chamber (36), and particle outlet having at least two particle outlet openings and connecting the vortex chamber with a collection chamber (36), with the dirty air inlet opening into the vortex chamber between the two particle outlet openings.