5results about How to "Good adsorption and separation performance" patented technology

This invention provides a method for synthesizing and applying modified SSZ-16 zeolite molecular sieve to CO2 adsorption and separation, relating to the field of chemical adsorbent technology. The invention involves mixing a silicon source, an aluminum source, an alkali source, a template agent, and water; crystallizing the resulting initial reaction gel and calcining it, then mixing it with an ammonium chloride solution for ion exchange; and then reacting the resulting ammonium-type SSZ-16 zeolite molecular sieve with a metal cation solution (Li). + Na + K + After ion exchange, the mixture is calcined to obtain modified SSZ-16 zeolite molecular sieve. This invention applies modified SSZ-16 zeolite molecular sieve to the field of selective CO2 adsorption and separation for the first time. The resulting modified SSZ-16 zeolite molecular sieve exhibits excellent CO2 / N2 and CO2 / CH4 gas adsorption and separation performance. In addition, this modified zeolite molecular sieve has the advantages of easy regeneration and excellent structural stability, and has better application prospects compared with other adsorbents.

The invention belongs to the technical field of metal-organic framework (MOF) crystalline materials and gas adsorption and separation, and relates to a microporous 3D Zr-MOF material and a preparation method and application thereof. The chemical formula of Zr-MOF is {Zr6 (mu3-O) 2.66 (mu3-OH) 5.33 L3 (H2O) 2}, L is an organic ligand formed by removing four protons from H4L, and the structural formula of H4L is as follows: the microporous 3D Zr-MOF material provided by the invention can selectively separate C3H8 / CH4 and C2H6 / CH4 at normal temperature, and has the advantages of good stability, simple preparation method and the like.

This invention discloses a diesel fuel aromatic removal adsorbent, its preparation method, and its application. The main component of the adsorbent is silicon dioxide, which is synthesized through a hydrolysis reaction of organosilanes and alcohols in water. After washing and drying, the adsorbent is formed by rolling to control the particle size and achieve high sphericity. The formed adsorbent is then metal-modified, resulting in a large specific surface area and fast mass transfer rate. It is used to adsorb and separate aromatic components in diesel fuel, exhibiting advantages such as large adsorption capacity and high aromatic selectivity.

This utility model belongs to the field of coal chemical wastewater pretreatment technology, and discloses a resource substance recovery system for coal chemical wastewater, including an adsorption separation system, an adsorption material regeneration system, and a recovery and regeneration system. The adsorption separation system is used to adsorb and separate resource substances in the wastewater to be treated using adsorption materials. The resource substances in the wastewater to be treated include oils and phenols. The adsorption material regeneration system is used to regenerate the adsorption material using a regeneration solution. The recovery and regeneration system is used to regenerate the regeneration solution and separate and recover the adsorbed resource substances. This utility model achieves efficient separation of oils and phenols by filling the adsorption separation device with adsorption material. The adsorption material regeneration system provides a regeneration solution to the adsorption separation device to achieve elution and regeneration of the adsorption material, thereby realizing the recycling of the adsorption material and effectively reducing the recycling and treatment cost.

The invention relates to a preparation method and application of an MOFs / MWCNTs composite material adsorbent for CO2 / N2 adsorption separation. According to the method, the high-stability UiO-66-NH2 / MWCNTs composite material is synthesized in situ by adding multi-walled carbon nanotubes (MWCNTs) into the material UiO-66-NH2, and the composite adsorbent is more stable in physical property, higher in adsorption efficiency and better in cycle performance. The UiO series MOFs material selected in the adsorbent disclosed by the invention has good hydrothermal stability, the UiO-66-NH2 / MWCNTs have relatively high BET (Brunauer, Emmett and Teller) surface area and micropore volume, and the adsorbent has good adsorption separation performance.