FIELD: sorbents and water treatment.
SUBSTANCE: inventions relate to ion-exchange sorbents based on naturally occurring zeolites modified with synthetic polymers and can be used in a variety of industry fields and when solving environmental problems associated with purification of natural water and waste waters to remove cesium and strontium radionuclids, heavy metals and ammonium, petroleum derivatives and other organics. Invention provides a method of preparing organomineral sorbent via polymerization of olefin on the surface of fine mineral particles under the influence of a catalytic system comprising metal-containing catalyst and alumoxane cocatalyst fixed on the surface of mineral particles as a result of interaction of organoaluminum compound of general formula AlRnX3-n, where R is C2-C4-alkyl, X is Cl or H, and n=2-3, with water of the fine mineral, which is notably natural zeolite with particle size below 60 μm and containing 9-15% water, above-said metal-containing catalyst being vanadium compound or zirconocene. Polymerization of olefin is conducted high-molecular weight polyolefin coating forms on the surface of zeolite in amount of 2-10% by weight. Resulting sorbent is characterized by high ion-exchange and sorption properties allowing employment thereof in carrying out sorption processes under dynamic conditions. Sorbent further possesses hardness and high chemical inertness allowing repetitive utilization thereof. Plasticity of polyolefin coating, in turn, allows manufacturing sorbent samples with desired shape and dimensions.
EFFECT: improved sorption capacity and other performance characteristics of sorbent.
7 cl, 2 tbl, 10 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ORGANOMINERAL SORBENT AND METHOD FOR ITS PRODUCTION | 2021 |
|
RU2769244C1 |
| RADIATION-PROTECTION COMPOSITE MATERIAL AND METHOD OF ITS PRODUCTION | 2007 |
|
RU2368629C2 |
| METHOD OF PREPARING HEAT- AND ELECTROCONDUCTIVE MATERIAL, AND MATERIAL PREPARED BY THIS METHOD | 2001 |
|
RU2200170C1 |
| POWDER COMPOSITE MATERIAL BASED ON POLYETHYLENE FOR 3D PRINTING BY SELECTIVE LASER SINTERING AND METHOD OF PRODUCTION THEREOF | 2023 |
|
RU2817095C1 |
| HOMOGENEOUS CATALYTIC SYSTEM FOR SYNTHESIS OF LOW-MOLECULAR BRANCHED POLYETHYLENE AND METHOD OF PREPARING LOW-MOLECULAR BRANCHED POLYETHYLENE | 1999 |
|
RU2161628C1 |
| POWDERED COMPOSITE MATERIAL BASED ON ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE FOR 3D PRINTING BY SELECTIVE LASER SINTERING (EMBODIMENTS) AND METHOD OF MANUFACTURING THEREOF (EMBODIMENTS) | 2023 |
|
RU2817083C1 |
| HOMOGENEOUS CATALYTIC SYSTEM FOR SYNTHESIS OF POLYETHYLENE AND STEREOBLOCK POLYPROPYLENE, METHOD OF PREPARING STEREOBLOCK POLYPROPYLENE, AND METHOD OF PREPARING POLYETHYLENE | 2000 |
|
RU2178423C2 |
| METHOD TO PRODUCE APPLIED CATALYST FOR ETHYLENE POLYMERIZATION AND COPOLYMERIZATION OF ETHYLENE WITH ALFA-OLEFINS | 1994 |
|
RU2064836C1 |
| CATALYST AND METHOD FOR SYNTHESIS OF OLEFINS FROM DIMETHYL ETHER IN PRESENCE OF SAID CATALYST | 2008 |
|
RU2391135C1 |
| CATALYST AND METHOD TO MANUFACTURE OLEFINES FROM DIMETHYL ETHER IN THE PRESENCE THEREOF | 2006 |
|
RU2323777C1 |
