4 results about "Cerium(III) oxide" patented technology

The application belongs to the technical field of electronic ceramic materials, and particularly relates to a high-performance composite material for a phase shifter and a preparation method thereof. The high-performance composite material for the phase shifter is prepared by using regenerated iron oxide obtained by sequentially performing high-temperature roasting and alkali treatment on iron oxide waste, doping treatment of the regenerated iron oxide with cerium oxide, and then mixing the regenerated iron oxide with lithium carbonate, zinc oxide, titanium dioxide, trimanganese tetroxide, bismuth trioxide and an additive, so that the dielectric loss is effectively reduced, and the ferromagnetic resonance line width is narrowed.

The application discloses a preparation method of a metal / cerium dioxide monatomic catalyst, which comprises the following steps: mixing an inorganic alkali solution and a cerium nitrate solution to perform hydrolysis, and then performing centrifugation, washing and drying to obtain Ce(OH)3; uniformly dispersing the Ce(OH)3 in a metal salt solution, and then performing stirring, centrifugation, washing and freeze-drying to obtain a metal precursor / cerium hydroxide; and performing a decomposition reaction on the cerium hydroxide under an inert gas to obtain a metal monatomic / cerium dioxide. 3+ The Ce on the surface of the cerium dioxide in the process is subjected to electron transfer with the adsorbed metal ions, and the metal ions are reduced; and then the metal / cerium dioxide monatomic catalyst is obtained by placing in air. The cerium dioxide is used as a carrier precursor, the metal monatomic is in-situ loaded on the cerium dioxide nanostructure through the electron transfer effect between the cerium dioxide and the metal ions, and a reducing agent is not additionally added, so that the preparation process is simple and mild, and the method has good controllability and industrial application prospect.

The present application relates to an electronic cigarette using electromagnetic heating, comprising a filter assembly, a heating assembly connected to the filter assembly, and a bare cartridge, the bare cartridge being formed by extrusion molding of a porous carrier material, a mixed powder, a tobacco extract mixture, a particle aggregation inhibitor, a binder, and metal composite magnetic conductor particles, the metal composite magnetic conductor particles being uniformly distributed in the bare cartridge; a control circuit board is used to control an electromagnetic induction coil to generate an alternating magnetic field according to a predetermined heating power formula, the metal composite magnetic conductor particles are used to cut the alternating magnetic field lines of the alternating magnetic field in the alternating magnetic field to generate alternating current eddy currents inside the metal composite magnetic conductor particles, the current eddy currents cause the metal composite magnetic conductor particles to generate heat so that the bare cartridge releases smoke; wherein the metal composite magnetic conductor particles are formed by sintering of manganese-zinc ferrite doped with cerium sesquioxide, ytterbium sesquioxide, and vanadium pentoxide, and aluminum-doped molybdenum disilicide powder.

The invention provides a composite deoxidizer as well as a preparation method and application thereof, and belongs to the technical field of smelting. The composite deoxidizer provided by the invention comprises the following components in percentage by mass: 30-45% of Fe, 5-20% of Fe, 10-25% of CaF, 5-8% of CaO and 6-17% of an auxiliary agent, and the auxiliary agent comprises Ce2O3 and Mg. According to the invention, rare earth oxide dicerium trioxide and Mg are added and can play a synergistic role, so that the deoxidization effect is further improved; by adjusting the component proportion of the composite deoxidizer, the deoxidizing effect of the composite deoxidizer can be improved.