4results about How to "Strong alkaline" patented technology

This invention provides an absorbent for capturing carbon dioxide and a method for capturing carbon dioxide. By volume percentage, the absorbent comprises 20-60% glycine salt aqueous solution, 10-50% triethylene glycol monomethyl ether, 5-10% ethylene glycol, and the balance being water. This absorbent combines the advantages of glycine salt systems, such as low volatility, non-toxicity, safety, and better antioxidant degradation resistance, while avoiding the risk of solid precipitates forming after absorption by the glycine salt system, which could cause pipeline blockage.

This invention discloses a hierarchical guanidine resin-based CO2 adsorbent material and its preparation method, belonging to the field of polymer synthesis technology. The adsorbent material prepared by this invention has a composite spherical structure and a hierarchical pore structure, including micropores, mesopores, and macropores. By introducing a hierarchical pore structure, the adsorption capacity of the material for CO2 is effectively improved. The introduction of hierarchical pores can significantly reduce molecular diffusion resistance and increase the contact area between the adsorbent and CO2 molecules, thereby achieving rapid adsorption. Furthermore, pyridyl, polyamino compounds, and guanidine groups have strong basicity and chemical affinity for CO2. Through surface functionalization modification, the number of active sites on the material surface is significantly increased, thereby further improving the CO2 adsorption capacity and selectivity.

The invention provides a method for detecting large particles in fine talcum powder, and belongs to the technical field of talcum powder particle size detection.The detection method comprises the following steps that talcum powder is added into an ethanol solution and stirred, and a mixed solution is obtained; a dissociation agent is added into the mixed solution, the dissociation agent is a mixture of a low-foam penetrant, sodium bicarbonate and a synergistic aid, the mixture is heated to 40-45 DEG C and stirred, then the mixture is heated to 60-70 DEG C and stirred, and dispersion liquid is obtained; and preparing a to-be-tested sample from the dispersion liquid, and detecting and analyzing the content of large particles. The detection method provided by the invention focuses on the difficult problem of accurate detection of large particles in the fine talcum powder, can effectively improve the dispersion performance of the talcum powder, and avoids the misjudgment of aggregates on the content of large particles, thereby efficiently and accurately detecting the content of large particles in the fine talcum powder.

The invention relates to a preparation method of an all-solid-state lithium battery positive electrode material. According to the method, the polyaniline derivative and the organic sulfide are compounded, so that the compatibility of the polyaniline derivative and the organic sulfide is better than that of polyaniline, and the interaction of a molecular level is achieved. Part of nitrogen-substituted polyaniline is used, the alkalinity of the polyaniline is higher than that of polyaniline, a better catalytic effect on organic sulfides is achieved, and the positive electrode material with higher catalytic energy than that of polyaniline can be obtained. In an organic solvent such as N-methyl pyrrolidone, a composite solution of a polyaniline derivative and an organic sulfide is prepared, and conductive carbon black is added. The composite solution is coated or brushed on the surface of a current collector, such as copper, aluminum, platinum or stainless steel, so that the lithium secondary battery positive electrode with high specific energy is obtained. The method is simple to operate, is suitable for the field of high-specific-energy lithium batteries, and has a wide application prospect.