7 results about "Alkali carbonate" patented technology

The application relates to a polypropylene material with high impact resistance and low melting point, a preparation method and application thereof. The polypropylene material with high impact resistance and low melting point comprises the following components in percentage by weight: 99.70-99.99% of polypropylene resin; 0.005-0.15% of nucleating agent A; and 0.005-0.16% of nucleating agent B. The nucleating agent A is a cyclohexane dicarboxylic acid metal salt; and the nucleating agent B is an alkali carbonate. The specific nucleating agent A and the nucleating agent B are compounded, the influence of the melt index fluctuation is overcome, the toughness difference between batch products is reduced, the product performance is stabilized, the polypropylene pipe material with high impact resistance, low melting point and stable quality is provided, the production cost is low, the preparation method is simple, and the large-scale application is facilitated.

The present invention relates to a method for preparing alkali carbonate / bicarbonate salts, comprising the steps of continuously feeding an aqueous alkali hydroxide solution to a gas-liquid contactor, forcing an inlet CO2-containing gas stream through a sparging device immersed in the gas-liquid contactor below the surface level of the aqueous alkali hydroxide solution to generate bubbles and / or microbubbles, adding hydrogen peroxide near the orifice of the sparging device where the bubbles and / or microbubbles are generated, the hydrogen peroxide supply being adjusted to reduce the formation of alkali carbonates and increase the formation of alkali bicarbonates, and continuously discharging an effluent from the gas-liquid contactor from which the alkali carbonates and bicarbonates, predominantly bicarbonate components, are recovered. A gas-liquid contactor and an apparatus are also provided by the present invention.

The application relates to a mixed reinforcing agent characterized by comprising a mixture of alkali carbonate and one or more of zirconium oxide, zirconite powder, white corundum and silicon oxide, and the solute particle size of the mixture is 10 nm-50 mu m. The application also relates to a binder jet 3D printing method. The scheme can solve the problem of low strength of the binder jet 3D printing ceramic product in the prior art.

A black IR reflective or transmissive pigment from which LiDAR responsive black coatings can be formed where the pigment displays a Blackness My value similar to non-IR reflective carbon black. The CuO particles display small crystallites of less than 18 nm and an (−111) / (111) reflectance intensity ratio of less than 1.2. A method of forming the CuO particles includes precipitation of CuCO3 or CuCO3 / Cu(OH)2 using an alkali carbonate as a precipitant and calcining the precipitate at about 300° C. to about 400° C.

This invention discloses a Co4S3 / Ni3S2@C-CNF catalytic material, its preparation method, and its application. The method includes: 1. Dissolving Ni(NO3)2·6H2O, Co(NO3)2·6H2O, and urea in a mixed solution of isopropanol and deionized water, stirring until homogeneous, and then transferring the solution to a hydrothermal reactor. Maintaining the temperature at 100–120°C for 12–16 h, followed by washing and drying, yields a basic carbonate; 2. Dissolving the basic carbonate and thioacetamide in anhydrous ethanol and stirring until homogeneous, transferring the solution to a hydrothermal reactor, maintaining the temperature at 120–130°C for 6–12 h, followed by washing and drying, yields NiCo2S4; 3. Weighing hydrochloric acid... 4. Mix dopamine and NiCo2S4, add Tris solution to the mixture, stir in the dark to form NiCo2S4@PDA solution, filter to obtain NiCo2S4@PDA composite material; 5. Disperse bacterial cellulose BC and NiCo2S4@PDA composite material in deionized water and stir evenly, dry to obtain NiCo2S4@PDA / BC composite material; 6. Place NiCo2S4@PDA / BC composite material in a tube furnace and carbonize at high temperature to obtain Co4S3 / Ni3S2@C-CNF composite material, which has good adsorption effect on sulfides and improves the electrochemical performance of Li-S battery.

The application belongs to the technical field of solid oxide electrochemical devices, and particularly relates to a low-temperature cerium-based composite electrolyte film with high ionic conductivity and a preparation process thereof. The film has a gradient function integrated structure and sequentially comprises a transmission layer composed of dense gadolinium-doped ceria, a functional layer constructed thereon, which is composed of a porous gadolinium-doped ceria skeleton and a lanthanum-strontium-gallium-magnesium oxide-alkali carbonate eutectic composite phase filled in the pores, and a SmNiO3 or SmCoO3 ultrathin interface modification layer covering the surface of the functional layer. The preparation process involves transmission layer forming sintering, functional layer slurry coating and step-by-step eutectic reaction heat treatment, and atomic layer deposition of the interface layer. The composite film can realize high oxygen ion conductivity and low electronic conductivity in a medium-low temperature range of 400-650 DEG C, significantly improves the battery efficiency and stability, and reduces the system operating temperature and cost.

The application pertains to processes for producing alkali hydroxides or alkali sulfites using large molecular weight acid intermediates. Generally, a component comprising an alkaline-earth cation—small molecular weight acid anion may be reacted with a component comprising an alkali sulfate to form a component comprising an alkali cation—small molecular weight acid anion and a component comprising an alkaline-earth sulfate. A series of additional steps results in forming a component comprising an alkali hydroxide, or an alkali carbonate, or an alkali bicarbonate, or any combination thereof.