5results about How to "Efficient Adsorption Separation" patented technology

The invention provides a molecular sieve catalyst for purifying and recycling CO in soot. The molecular sieve catalyst is mainly prepared from the following raw materials in parts by weight: 65-70 parts of zeolite powder; 30 to 35 parts of pseudo-boehmite; 7.5 to 8.5 parts of a copper-based composition; and 9.2 to 12.5 parts of a calcium-based composition. The Cax type zeolite powder, the Nax type zeolite powder and the pseudo-boehmite are used as catalyst carrier raw materials, and the adsorption capacity and the adsorption selectivity of carbon monoxide are greatly improved through cooperation of the Cax type zeolite powder, the Nax type zeolite powder and the pseudo-boehmite, so that the final molecular sieve can achieve the effects of high temperature resistance, corrosion resistance, acid resistance and pressure resistance; the molecular sieve catalyst has good adsorptive selectivity on low-concentration carbon monoxide, and is suitable for purification and recovery of carbon monoxide in industrial soot.

The invention discloses a preparation method of a phosphonate-modified acylhydrazone covalent organic polymer and application of the phosphonate-modified acylhydrazone covalent organic polymer to adsorption and separation of heavy rare earth ions, and belongs to the field of environmental protection. According to the invention, 2, 4, 6-tri (4-formyl phenyl)-1, 3, 5-triazine and tetraethyl ((2, 5-bis (hydrazino carbonyl)-1, 4-phenylene) bis (oxy) bis (ethane-2, 1-disubunit)) bis (phosphonate) are subjected to a Schiff base reaction to prepare a phosphonate modified acylhydrazone covalent organic polymer; a phosphonate functional group is modified on a framework of the acylhydrazone covalent organic polymer, and the acylhydrazone covalent organic polymer can be used for high-efficiency adsorption separation of heavy rare earth ions in a water phase; the phosphonate-modified acylhydrazone covalent organic polymer is simple in preparation method, has excellent adsorption separation performance on heavy rare earth ions, and is expected to be used as an efficient adsorbent for southern ion adsorption type rare earth ore low-concentration wastewater.

The invention belongs to the field of sewage treatment, and particularly relates to a preparation method of a high-conductivity flowing electrode for adsorption and separation of nitrogen and phosphorus in sewage, the method comprises the following steps: firstly, carbonizing pig manure under a protective atmosphere, then carrying out alkali activation to obtain pig manure-based porous carbon with a hierarchical porous structure and a graphite-like domain, and adding the pig manure-based porous carbon into a high-conductivity flowing electrode for adsorption and separation of nitrogen and phosphorus in the sewage. According to the invention, a semi-solid flowing electrode suspension liquid is prepared by fully mixing with ultrapure water, a supporting electrolyte and a conductive additive, and an electrochemical nitrogen and phosphorus adsorption separation process is constructed based on the flowing electrode. Compared with a common commercial active carbon flow electrode, the pig manure-based porous carbon-based flow electrode prepared by the invention has the characteristics of high conductivity and low resistance, so that a more efficient charge seepage network can be formed, and electron transmission and ion diffusion separation are promoted. In addition, the flowing electrode particles provided by the invention have relatively high hydrophilicity, the viscosity of the flowing electrode is relatively low, the flowability is good, and the system is not easy to block.

The invention discloses a supramolecular material with efficient benzene adsorption and separation capacity and a preparation method and application thereof, and the preparation process of the supramolecular material comprises the following steps: synthesizing three ligands L-H, L-OCH3 and L-F, and then assembling with metal Zn (II) to synthesize novel metal organic supramolecular cages: T-H, T-OCH3 and T-F. The supermolecular cages show unique selective adsorption characteristics on benzene molecules, and a novel solution is provided for effective separation of benzene in a mixed system. The invention not only opens up a brand new path for designing a benzene adsorbing material with high performance and high selectivity, but also plays a role in efficiently separating benzene from cyclohexane in the field of industrial chemistry so as to improve the production efficiency, and contributes important power to promoting the progress and sustainable development of related industries.

This invention discloses a core-shell material for the separation of fluorine-containing electronic specialty gases and its preparation method. Addressing the separation needs of fluorine-containing electronic specialty gases such as SF6 and CF4 commonly used in the semiconductor and photovoltaic industries, this invention uses monodisperse PSD microspheres as the core and in-situ grows HKUST-1 under controlled low-temperature synthesis conditions to prepare a core-shell MOF composite material. The adsorption selectivity, separation performance, and mechanism of this material for fluorine-containing gas / nitrogen mixtures were investigated. The prepared PSD@HKUST-1 core-shell material exhibits a tunable pore structure and abundant adsorption sites, demonstrating excellent separation performance for fluorine-containing electronic specialty gases, enabling efficient recovery and purification of these gases. This invention features a simple process and novel structural design, showing promising application prospects in the fields of electronic chemical purification and waste gas treatment.