4results about How to "Control growth rate" patented technology

The utility model discloses an assembly structure for synthesizing diamonds by a high-temperature and high-pressure method, which relates to the technical field of diamond synthesis and comprises an outer layer structure, a middle layer heating and insulating system, a core reaction layer and a top covering layer which are sequentially arranged from outside to inside, the outer-layer structure comprises a pyrophyllite composite block, a pyrophyllite ring surrounding the outer side of the pyrophyllite composite block and a conductive steel cap fixed to the top, the middle-layer heating and insulating system comprises a heating sleeve embedded into the pyrophyllite composite block, a heating piece is arranged in the heating sleeve, a magnesium oxide insulating sleeve is wrapped in the heating piece, and the outer-layer structure and the middle-layer heating and insulating system are arranged in the heating sleeve. A vertically supported thick zirconium oxide column is arranged below the heating sleeve, the core reaction layer comprises a magnesium oxide crystal bed, a carbon source is placed on the magnesium oxide crystal bed, alloy is distributed around the carbon source, and the top covering layer comprises a thin zirconium oxide column covering the core reaction layer. The problems that in the prior art, obtained seeds with high carbon content grow fast, but the impurity removal capacity is weak, and the quality is poor are solved; the seeds with low carbon content are good in quality but small in size, and the economic benefit is low.

The present application belongs to the technical field of food baking, and provides a mousse cake layering forming method, comprising: activating the upper surface of the Nth layer of mousse layer which has been solidified, removing the surface condensate frost and forming micro roughness; adjusting the temperature of the N+1th layer of mousse paste to be filled to be within ±3℃ of the surface temperature of the Nth layer of mousse layer; using a low shear force mode, filling the N+1th layer of mousse paste after temperature adjustment into the Nth layer of mousse layer along the inner wall of the mold or through a flow guide device to obtain a multi-layer mousse assembly; precooling the multi-layer mousse assembly at 4-8℃ for 10-20min, and then freezing and shaping at 18-25℃.

The invention relates to a multi-grain-boundary cerium-based catalyst as well as a preparation method and application thereof. The multi-grain-boundary cerium-based catalyst comprises a multi-grain-boundary cerium dioxide carrier and an active component loaded on the carrier, the active component comprises any one or a combination of at least two of copper oxide, manganese oxide or cobalt oxide. According to the multi-grain-boundary cerium-based catalyst, multi-grain-boundary CeO2 is adopted as a carrier, and compared with a traditional single-crystal Ce-based catalyst, the multi-grain-boundary Ce-based catalyst has rich grain boundary defects, so that generation of an oxygen vacancy active structure is promoted, and higher photochemical reaction activity is achieved. The structural advantages are beneficial to adsorption and activation of reactants and generation of active oxygen species, so that the deep oxidation performance of the catalyst on VOCs is remarkably improved. Compared with the traditional thermocatalysis, the application of the photothermal catalysis technology reduces the energy consumption of external heating. The multi-grain-boundary cerium-based catalyst has excellent low-temperature degradation capability and reaction stability, so that the multi-grain-boundary cerium-based catalyst has a good application prospect in purification of VOCs (Volatile Organic Compounds) in industrial flue gas.

The application provides a silicon-doped titanium lithium ion sieve and a preparation method and application thereof, and particularly relates to the technical field of ion sieve preparation. 1‑x Si x O3; wherein 0 The silicon-doped titanium lithium ion sieve provided by the application introduces silicon elements in the crystal structure, uses the high-electronegativity tetravalent silicon atoms to replace a small part of low-electronegativity tetravalent titanium atoms, breaks the regularity of rapid formation of titanium-oxygen bonds and rapid growth of [TiO6] octahedrons on one hand, controls the crystal growth speed, perfects the crystal defects at high temperature, and obtains a small-particle-size titanium lithium ion sieve precursor beta-Li2TiO3 at high temperature, and uses the higher stability of Si-O bonds than Ti-O bonds, so that the synthesized lithium ion sieve has higher acid resistance and lower titanium dissolution loss rate.