Versatile adsorbent material

Abstract

The present invention relates to a versatile adsorbent material comprising at least one LTA or FAU zeolite, having a Si / Al molar ratio of between 1 and 3 inclusive, at least one FAU zeolite having a Si / Al molar ratio of between 3 and 30 non-inclusive, or MFI or *BEA zeolite, and at least one agglomeration binder. The invention further relates to the uses of the adsorbent material for the treatment and / or purification of liquid or gaseous flows.

Description

MULTIPURPOSE ADSORBENT MATERIAL

[0001] The present invention relates to the field of adsorbents in general and in particular to zeolitic adsorbents, intended especially for the adsorption of gases and liquids, including the field of zeolitic adsorbents enabling the separation of chemical compounds by adsorption.

[0002] The adsorption of gas and liquid molecules via zeolite adsorbents is now well known and widely developed. For many years, zeolite adsorbents have become widespread and are now commonly used for the adsorption or separation of chemical molecules, for example, gas drying, drying of organic compounds, odor adsorption, separation of air gases, and separation of chemical isomers, to name just a few of the common and well-known applications.

[0003] For each of these applications, however, a very specific zeolitic adsorbent is required in order to maximize the effectiveness of said adsorbent in the intended application.

[0004] For example, there are natural zeolite adsorbents used for water treatment, such as chabazite and clinoptilolite zeolites. These natural materials are often impure. Consequently, their effectiveness may be reduced, and they may be unsuitable for finishing treatments or applications where high degrees of purity are required.

[0005] Synthetic zeolite adsorbents of the LTA or FAU type, containing specific alkali or alkaline earth cations, including sodium, calcium, lithium, potassium, and barium, can also be used for gas drying, isomer separations, and other applications. As mentioned above, in all cases, a specific zeolite adsorbent is used to adsorb a specific impurity and / or separate two elements (e.g., gases, isomers).

[0006] However, it is becoming increasingly common to have to deal with matrices (liquids or gases) that are soiled or polluted with not one impurity, but two, three, or even many different impurities, in nature (physical or chemical) and in quantity.

[0007] For example, in the case of matrices contaminated by two impurities, a commonly implemented possibility today is to place two beds of adsorbents distinct zeolitic adsorbents, or even mixing two different zeolitic adsorbents in the same adsorption bed.

[0008] Thus, patents EP0862936 and EP0862938 propose a first treatment on alumina, then a second treatment on zeolite, for example zeolite of type X, Y or A. Patent FR3029803 describes a composite adsorbent mixture of at least one adsorbent active principle in the form of microparticles and a non-adsorbent thermal principle in the form of microparticles.

[0009] Patent EP1101521 describes a multi-component adsorbent, characterized in that it is composed of a mixture of different adsorbents. Patent EP1184067 discloses a composite zeolite adsorbent capable of adsorbing nitrous oxide, ethylene, and ethane from air from which water and carbon dioxide have been previously removed. This composite zeolite adsorbent comprises zeolite A and zeolite X.

[0010] Patent FR2834915 describes a process for purifying gas streams contaminated by nitrogen oxides and hydrocarbons by passing over a first layer of ZSM-5 zeolite and a second layer of 13X zeolite, or a mixture of ZSM-5 zeolite and 13X zeolite.

[0011] Patent EP0842697 claims binder-free molecular sieve-effect zeolite granules, said zeolites containing a lithium zeolite A and a lithium zeolite X, the lithium zeolite A having been obtained by converting a silica-containing binder. Patent application FR3029803, on the other hand, describes a composite adsorbent mixture of at least one adsorbent active ingredient in microparticle form and a non-adsorbent thermal ingredient in microparticle form.

[0012] Despite all these documents enriching the knowledge of the person in the trade, there remains today a need for a versatile adsorbent material, that is to say, one capable of adsorbing more than two, advantageously more than three, or even more than four different impurities present in a liquid or gaseous matrix.

[0013] Indeed, it would be desirable to have a single zeolitic adsorbent material capable of adsorbing different impurities, and in particular a zeolitic adsorbent material with multiple and different adsorption characteristics, capable of adsorbing both small molecules, but also larger molecules, hydrophilic and hydrophobic molecules, organic and inorganic molecules, or even molecules that can be oxidized or reduced.

[0014] Therefore, it would be desirable to have a versatile zeolitic adsorbent material available for various processing applications, capable of adsorbing several impurities, or even several types of impurities, without the need to identify beforehand the different impurities present in the stream to be purified.

[0015] With such a versatile zeolitic adsorbent material, it would therefore be possible to consider diverse and varied uses, including, but not limited to, the treatment and purification of water, organic liquids, gases, for example air, soils, and others, and for example water treatment, for example drinking water treatment at the entrance to cities (water treatment plants, purification), treatment of wastewater, but also air purification, for example in confined environments, odor elimination, purification of streams from recycling operations, chemical, mechanical, physical, or organic recycling (fermentation, composting, enzymatic digestion, and others), from cracking operations, and in particular from chemical recycling and / or cracking of plastics, but also for the purification of streams in the food industry,in the field of packaging (in English).

[0016] Thus, a first objective of the present invention is to propose an adsorbent material that allows the removal, in a gaseous or liquid matrix, of a large number of impurities, more specifically more than two impurities, or even more than three impurities, simultaneously, without the need to mix several different adsorbent materials and / or without the need to implement several superimposed beds of adsorbents or installed in a series of columns of different adsorbents.

[0017] Thanks to its versatile adsorption properties, the material of the invention allows for the simultaneous treatment of numerous impurities, also known as contaminants, thus avoiding the need to associate a specific type of contaminant with a particular adsorbent structure, and thereby avoiding the need for a succession of different adsorbents or numerous successive or sequential treatments. The versatile adsorbent material of the invention is therefore particularly well-suited to the treatment and purification of liquid or gaseous matrices containing various unspecified and / or unidentified impurities.

[0018] Another objective is to propose a versatile adsorbent material capable of removing micropollutants resistant to existing conventional quaternary treatments such as ozonation, catalytic oxidation, adsorption on carbons or ion exchange resins, membrane filtration, and others, by a treatment on a single bed of versatile adsorbent material for the treatment of said pollutants.

[0019] Another objective is to provide a versatile and effective adsorbent material for removing a wide range of different impurities, without needing to adjust or modify the nature of said versatile adsorbent material according to the impurities to be removed. The ultimate goal is to provide a universal, versatile adsorbent material without needing to identify some or all of the contaminants present in the matrix to be purified. Further objectives will be described in the following section of the present invention.

[0020] The inventors have now discovered that the aforementioned objectives can be achieved in whole or at least in part, through the present invention which consists of providing an adsorbent material comprising at least two zeolites and possibly other adsorbent materials.

[0021] Thus, according to a first aspect, the present invention relates to an adsorbent material comprising: A) at least one zeolite chosen from LTA type zeolites and FAU type zeolites, FAU type zeolites having a Si / Al molar ratio between 1 and 3, inclusive, B) at least one zeolite chosen from among FAU type zeolites with a Si / Al molar ratio between 3 and 30, excluding limits, MFI type zeolites and *BEA type zeolites, and C) at least one agglomeration binder.

[0022] Among FAU type zeolites with a Si / AI molar ratio between 1 and 3 inclusive, LSX, MSX, X and Y zeolites are preferred, preferably chosen from among X and Y zeolites.

[0023] Among LTA type zeolites, 4A and 5A zeolites are preferred.

[0024] Among zeolites with a Si / AI molar ratio strictly greater than 3, preference is given to those chosen from FAU type zeolites with a Si / AI molar ratio strictly greater than 3 and less than or equal to 30, MFI type zeolites and *BEA type zeolites.

[0025] Among FAU type zeolites with a Si / Al molar ratio between 3 and 30, ratios between 4 and 30 are preferred, preferably between 4 and 20, even better between 5 and 15, and advantageously between 5 and 8, and in particular FAU-Y type zeolites that have undergone one or more desalumination treatments according to any method well known to the person skilled in the art.

[0026] Among MFI-type zeolites, those with a Si / Al ratio between 10 and 50 are preferred, preferably 12 to 40 inclusive, as are those with a Si / Al ratio of 10 to 50. between 100 and 800, preferably 100 to 300 inclusive, as well as purely silicic MFIs, for example Silicalite-1.

[0027] According to one embodiment, the adsorbent material of the invention may further comprise one or more of the adsorbent species selected from: • porous materials based on carbon, such as activated carbons and carbon molecular sieves; (component A) • Diatomaceous earth; (component B) • Metal oxides, typically transition metal oxides, including mixed oxides, for example zinc, iron, titanium, copper, zirconium, manganese, silver oxides and their combinations; (component C) • zeolites of type CHA, HEU, MOR, MEL, LTL; (component D) • zeotypes such as, for example, aluminophosphates, titanosilicates, porous organic and / or organometallic materials, including MOFs (Metal Organic Frameworks) such as ZIFs (Zeolitic Imidazolate Frameworks), COFs (Covalent Organic Frameworks), and others; (component E) and • mesoporous silicas, such as for example those chosen from SBA, MCM, in particular MCM-41 (component F).

[0028] According to another preferred embodiment, the adsorbent material of the invention may further comprise one or more of the adsorbent species selected from: • porous materials based on carbon, such as activated carbons and carbon molecular sieves; (component A) • Metal oxides, typically transition metal oxides, including mixed oxides, for example zinc, iron, titanium, copper, zirconium, manganese, silver oxides and their combinations; (component C) • zeolites of type CHA, HEU, MOR, MEL, LTL; (component D) • zeotypes such as, for example, aluminophosphates, titanosilicates, porous organic and / or organometallic materials, including MOFs (Metal Organic Frameworks) such as ZIFs (Zeolitic Imidazolate Frameworks), COFs (Covalent Organic Frameworks), and others; (component E) and • mesoporous silicas, such as for example those chosen from SBA, MCM, in particular MCM-41 (component F).

[0029] According to yet another preferred embodiment, the adsorbent material of the invention may further comprise one of the adsorbent species selected from: • porous materials based on carbon, such as activated carbons and carbon molecular sieves; (component A) • Metal oxides, typically transition metal oxides, including mixed oxides, for example zinc, iron, titanium, copper, zirconium, manganese, silver oxides and their combinations; (component C) • zeolites of type CHA, HEU, MOR, MEL, LTL; (component D) • zeotypes such as, for example, aluminophosphates, titanosilicates, porous organic and / or organometallic materials, including MOFs (Metal Organic Frameworks) such as ZIFs (Zeolitic Imidazolate Frameworks), COFs (Covalent Organic Frameworks), and others; (component E) and • mesoporous silicas, such as for example those chosen from SBA, MCM, in particular MCM-41 (component F).

[0030] In a particularly preferred embodiment, the adsorbent species that can also be included in the adsorbent material of the invention are chosen from: • at least one component A and at least one component B, • at least one component A and at least one component C, • at least one component A and at least one component D, • at least one component A and at least one component E, • at least one component A and at least one component F, • at least one component A, at least one component B, and at least one component C, • at least one component B and at least one component C, • at least one component C and at least one component D, • at least one component C and at least one component E, • at least one component B and at least one component D, • at least one component B and at least one component E, and • at least one component B, at least one component C, and at least one component D.

[0031] According to a highly advantageous embodiment, the adsorbent species that can also be included in the adsorbent material of the invention are chosen from: • at least one component A, • at least one component A and at least one component B, and • at least one component A and at least one component C.

[0032] In the present invention, it must be understood that all the terms mentioned concerning "zeolites" and "porous materials" encompass the hierarchically porosity homologues of said zeolites and porous materials, that is to say, the homologues having pores at several scales: micropores (less than 2 nm), mesopores (2 nm to 50 nm) and sometimes macropores (more than 50 nm).

[0033] It should also be understood that the zeolites present in the multipurpose adsorbent material of the invention include related zeolites, i.e. zeolites which have similar structures and contain other chemical elements, such as iron, zinc and titanium, in addition to the aluminum and silicon which constitute the framework of the zeolitic structure.

[0034] The versatile adsorbent material according to the invention generally and most often comprises one or more metals, which may be present in the form of cations, in particular in the form of exchangeable cations or present in metallic form or in the form of oxides, and in this case most often in clusters.

[0035] In a preferred embodiment, the zeolites included in the multipurpose adsorbent material of the invention comprise one or more cations most often chosen from among the hydronium, sodium, calcium, lithium, barium, potassium, magnesium, iron, zinc, copper, silver, titanium, manganese, cobalt cations.

[0036] In general, versatile adsorbent materials are preferred for which the mass ratio component A) / component B) is between 1 / 9 and 9 / 1, preferably between 1 / 6 and 6 / 1, for example between 1 / 2 and 2 / 1, these ratios being understood inclusive.

[0037] Component C) of the multipurpose adsorbent material of the invention is an agglomerating binder that enables the cohesion of components A) and B) to make the multipurpose adsorbent material manageable. The agglomerating binder may be of any type well known to those skilled in the art of adsorbent materials, particularly zeolitic adsorbent materials. Non-limiting examples of agglomerating binders include natural, synthetic, or artificial clays, and in particular clays selected from kaolin, kaolinite, nacrite, dickite, halloysite, attapulgite, sepiolite, montmorillonite, bentonite, illite, and metakaolin, as well as mixtures of two or more of these in any proportion. Clays usable as an agglomerating binder for the multipurpose adsorbent material of the invention may also be delaminated clays.

[0038] The binders usable within the framework of the present invention may also include aluminas, silica including silica sols, silicates, and others, as well as mixtures of two or more of these agglomeration binders.

[0039] The agglomeration binder C) of the multipurpose adsorbent material of the invention can be zeolithized, in whole or at least in part. For zeolithization techniques, reference may be made in particular to the work of DW Breck "Zeolite Molecular Sieves", a Wiley Interscience Publication, (1974), pp. 731 ff.

[0040] The quantity of component C), which is preferably an agglomeration binder, is most often between 0.1% and 60% by weight, preferably between 0.1% and 40% by weight, preferably again between 0.1% and 20% by weight, inclusive of limits, relative to the total weight of the multipurpose adsorbent material of the present invention.

[0041] The versatile adsorbent material of the invention can be prepared according to all classic methods well known to those skilled in the art for preparing adsorbent materials and in particular agglomerated adsorbent materials, such as those described in patent EP2152402.

[0042] In one embodiment, the process for preparing the multipurpose adsorbent material of the invention comprises at least one step of mixing components A), B) and the other porous material(s) mentioned above, then at least one step of mixing and agglomerating, or directly agglomerating the previously obtained mixture, with the agglomeration binder C), then optionally at least one shaping step if desired or desired and finally at least one activation step.

[0043] All these steps are well known to those skilled in the art. The mixture of components A), B), and possibly the other porous material(s), is generally and most often a mixture of solids, in the form of powders or crystals. The mixture can be prepared using any method known per se, according to methods well known to those skilled in the art and described in scientific literature, patents, and on the internet.

[0044] The process for preparing the multipurpose adsorbent material of the invention may further comprise one or more impregnation and / or ion exchange steps to effect a change in polarity, and / or one or more degradation steps by acid, base, or chelating treatment to impart to the material specific adsorption properties based on affinity / polarity, sterility / exclusion, and other factors. The material of the present invention may also exhibit highly desirable catalytic properties, particularly under the action of the metal(s) contained within it.

[0045] It may indeed be advantageous, desirable or even necessary to carry out one or more impregnation or exchange operations (absorption type), particularly with the aim of modifying the polarity, and / or one or more degradation steps by acid, basic or chelating treatment, in order to give the agglomerate particular catalytic or adsorption properties by affinity / polarity, sterility / exclusion.

[0046] The chemical impregnation and / or exchange treatment can be carried out before or after the agglomeration step with the agglomeration binder, on at least one of the porous materials used or on the mixture of one or more, or even all of the porous materials included in the multipurpose adsorbent material of the invention.

[0047] It should be understood that the different zeolites present in the multipurpose adsorbent material of the invention may contain one or more cations chosen from among the hydronium cation, alkali metal cations (preferably sodium, potassium), alkaline earth metal cations (preferably Mg, Ca), and transition metal cations (preferably Zn, Fe, Cu).

[0048] In a preferred embodiment of the invention, when the zeolitic adsorbent material comprises an MFI type zeolite, the latter is advantageously chosen from the group of MFI type zeolites comprising one or more cations chosen from Na, Li, Ca, hydroniums.

[0049] After mixing the various solid components, the versatile adsorbent material is shaped according to any method well known to those skilled in the art and, for example and without limitation, through shaping processes by extrusion, pelletizing, agitation and collisions, allowing the desired shapes and sizes to be achieved.

[0050] Thus, the versatile adsorbent material of the present invention can be in all forms well known to those skilled in the art and for example in the form of solids such as beads, yarns, solid or hollow extrudates, trilobes, quadrilobes, tablets, pellets, granules, film-coated solids, core-shell, and others.

[0051] The versatile adsorbent material of the present invention, whether in the form of beads, extrudates or other, most often and generally has an average volumetric diameter, or an average length (largest dimension when not spherical), of between 0.05 mm and 10 mm, preferably between 0.1 mm and 10 mm, even more preferably between 0.2 mm and 10 mm.

[0052] In an even more preferred embodiment, the versatile adsorbent material of the present invention has an average volumetric diameter of between 0.3 mm and 5 mm, considering the smallest dimension of the agglomerate, and between 0.3 mm and 10 mm, considering the largest dimension of the agglomerate.

[0053] In one embodiment of the invention, the multipurpose adsorbent material of the present invention advantageously has a size between 0.3 mm and 5 mm (considering the smallest dimension of the material) and between 0.3 mm and 10 mm (considering the largest dimension of the material).

[0054] According to a preferred embodiment of the present invention, the multipurpose adsorbent material described above most often exhibits the following mechanical properties: • either a bed crush resistance (REL) measured according to ASTM 7084-04 of between 1 MPa and 5 MPa, preferably between 1.5 MPa and 5 MPa, preferably still between 2 MPa and 5 MPa, for a material with a mean volume diameter (mvd) or length (largest dimension when the material is not spherical) of less than 1 mm, inclusive of terminals, • either a grain crush resistance, measured according to ASTM D 4179 (2011) and ASTM D 6175 (2013), of between 0.5 daN and 30 daN, preferably between 1 daN and 20 daN, preferably still between 2 daN and 10 daN, for a material of average volume diameter (dso) or length (largest dimension when the material is not spherical), greater than or equal to 1 mm, inclusive.

[0055] It is also preferred, within the scope of the present invention, that the multipurpose adsorbent material exhibits water resistance suitable for its intended uses, that is to say, good or even very good geometric and mechanical stability over time, particularly when the multipurpose adsorbent material is in contact with water. In the context of the present invention, the multipurpose adsorbent material exhibits suitable water resistance when it has a resistance to disintegration typically greater than 80%, preferably greater than 90%.

[0056] Resistance to disintegration is easily measured by a boiling test, which can be performed by immersing a 50 g sample of a known, multipurpose adsorbent material in 400 mL of boiling water for 5 minutes. The supernatant is then removed by decantation, and the multipurpose adsorbent material is gradually dried to 350°C (2-hour holding period). This cycle is repeated three times. Resistance to disintegration is obtained by sieving and weighing the material and is expressed as the mass percentage of sieves remaining within the original particle size range.

[0057] The versatile adsorbent material that has just been defined finds applications in many fields thanks to its high adsorption capacity for multiple molecules.

[0058] Thus the material of the invention can be easily used for the treatment and purification of water, organic liquids, gases, for example air, soils, and others, and for example water treatment, for example drinking water treatment at the entrance of cities (water treatment plants, potabilization), treatment of water from wastewater, but also air purification, for example in confined environments, purification of streams from recycling operations, chemical, mechanical, physical, or organic recycling (fermentation, composting, enzymatic digestion, and others), from cracking operations, and in particular from chemical recycling and / or cracking of plastics, but also for the purification of streams in the food industry, in the field of packaging.

[0059] Thanks to its versatile adsorption properties, the material of the invention allows for the simultaneous treatment of numerous contaminants, thus avoiding the need to associate a specific type of contaminant with a particular adsorbent structure. This eliminates the need for a succession of different adsorbents or numerous successive or sequential treatments, the order of which is often difficult to determine and optimize. The versatile adsorbent material of the invention is therefore particularly well-suited to the treatment and purification of liquids and gases containing various unspecified and / or unidentified impurities.

[0060] In other words, the versatile adsorbent material of the invention allows for the simultaneous treatment of all contaminants present in a liquid or gaseous stream, which has the advantage of avoiding the need to associate a specific type of contaminant with a particular adsorbent structure. The material of the invention is therefore particularly useful when the nature of the contaminants is unknown or incompletely known, thus simplifying, or even eliminating, preliminary steps of chemical analysis that are often complex, lengthy, and costly.

[0061] The present invention is illustrated by means of the following examples, which are not intended to limit the scope of protection sought, the scope of protection being defined by the claims annexed to this description.

[0062] The physical properties of the multipurpose adsorbent material of the invention are evaluated by methods known to those skilled in the art, the main ones of which are recalled below. Particle size distribution of the material of the invention

[0063] The determination of the average volumetric diameter (or "average volume diameter") of the zeolitic adsorbent material of the process according to the invention is carried out by analyzing the particle size distribution of a sample of adsorbent material by imaging according to ISO 13322-2:2006, using a conveyor belt allowing the sample to pass in front of the camera lens.

[0064] The volume mean diameter is then calculated from the particle size distribution by applying ISO 9276-2:2001. In this document, the terms "volume mean diameter" or "size" are used for zeolitic adsorbent materials. The accuracy is on the order of 0.01 mm for the size range of adsorbent materials useful within the scope of the present invention. Identification of the components of the material of the invention:

[0065] The identification of the different components of the material of the invention, as well as the molar ratios Si / Al, are evaluated by X-ray diffraction analysis, known to those skilled in the art under the acronym DRX, supplemented by elemental chemical analysis by ICP and / or X-ray fluorescence, by solid-state NMR analysis, and SEM-EDX analysis.

[0066] The X-ray fluorescence chemical analysis technique is described in standard NF EN ISO 12677:2011 on a wavelength-dispersive X-ray spectrometer (WDXRF). Elemental chemical analysis by ICP is performed by high-frequency induced plasma atomic emission spectrometry (ICP-AES) and described in standards NF EN ISO 21587-3 or NF EN ISO 21079-3. Composition examples

[0067] The following multipurpose adsorbent materials 1 to 6, according to the present invention, are prepared as follows: the various components are introduced as dry powders and mixed dry in a kneading-type arm mixer. Water is then added to the mixture until a paste is formed. The paste is then extruded and cut to form extrudates 1.6 mm in diameter. The extrudates are then dried at 80°C for 8 hours and subsequently activated at 550°C for 2 hours. Unless otherwise stated, percentages are weight percentages, expressed on the anhydrous material, i.e., after deducting the loss on ignition after heating at 950°C for 4 hours. Multipurpose adsorbent material 1: Multipurpose adsorbent material 2: Versatile adsorbent material 3: Versatile adsorbent material 4: Versatile adsorbent material 5: Versatile adsorbent material 6:

Claims

DEMANDS 1. Adsorbent material comprising: A) at least one zeolite chosen from LTA type zeolites and FAU type zeolites, FAU type zeolites having a Si / Al molar ratio between 1 and 3, inclusive, B) at least one zeolite chosen from among FAU type zeolites with a Si / Al molar ratio between 3 and 30, excluding limits, MFI type zeolites and *BEA type zeolites, and C) at least one agglomeration binder.

2. Material according to claim 1, wherein FAU type zeolites having a Si / Al molar ratio between 1 and 3, inclusive, are selected from LSX, MSX, X and Y zeolites, preferably selected from X and Y zeolites.

3. Material according to claim 1, wherein the LTA type zeolites are selected from 4A and 5A zeolites.

4. Material according to claim 1, wherein FAU type zeolites with a Si / Al molar ratio between 3 and 30 are selected from those with a molar ratio between 4 and 20, better still between 5 and 15, and advantageously between 5 and 8, and in particular from FAU-Y type zeolites, especially those having undergone one or more desalumination treatments.

5. Material according to claim 1, wherein the MFI type zeolites are selected from MFI zeolites with a Si / AI ratio of 10 to 50, preferably 12 to 40 inclusive, and from MFIs with a Si / AI ratio of 100 to 800, preferably 100 to 300 inclusive, as well as purely silicic MFIs, for example Silicalite-1.

6. Material according to any one of the preceding claims comprising one or more adsorbent species selected from: porous materials based on coal, such as activated carbons and carbon molecular sieves; • diatomaceous earth; • metal oxides, typically transition metal oxides, including mixed oxides, for example zinc, iron, titanium, copper, zirconium, manganese, silver oxides and their combinations; • zeolites of the CHA, HEU, MOR, MEL, LTL type; • zeotypes such as, for example, aluminophosphates, titanosilicates, porous organic and / or organometallic materials, including MOFs (Metal Organic Frameworks) such as ZIFs (Zeolitic Imidazolate Frameworks), COFs (Covalent Organic Frameworks), and others; and • mesoporous silicas, such as for example those chosen from SBA, MCM, in particular MCM-41.

7. Material according to any one of the preceding claims comprising one or more metals, which may be present in the form of cations, in particular in the form of exchangeable cations or present in metallic form or in the form of oxides, and in this case most often in clusters.

8. Material according to any one of the preceding claims comprising one or more cations selected from the hydronium, sodium, calcium, lithium, barium, potassium, magnesium, iron, zinc, copper, silver, titanium, manganese, cobalt cations.

9. Material according to any one of the preceding claims, wherein the mass ratio component A) / component B) is between 1 / 9 and 9 / 1, preferably between 1 / 6 and 6 / 1, for example between 1 / 2 and 2 / 1, inclusive.

10. Material according to any one of the preceding claims, wherein component C) is an agglomeration binder selected from natural, synthetic or artificial clays.

11. Material according to any one of the preceding claims, wherein component C) is a clay selected from kaolins, kaolinites, nacrites, dickites, halloysites, attapulgites, sepiolites, montmorillonites, bentonites, illites and metakaolins, as well as mixtures of two or more of them in any proportions.

12. Material according to any one of the preceding claims, wherein the quantity of component C) is between 0.1% and 60% by weight, preferably between 0.1% and 40% by weight, preferably again between 0.1% and 20% by weight, inclusive of terminals, relative to the total weight of the multipurpose adsorbent material of the present invention.

13. Material according to any one of the preceding claims, having an average volume diameter, or average length, between 0.05 mm and 10 mm, preferably between 0.1 mm and 10 mm, more preferably between 0.2 mm and 10 mm.

14. Use of a material according to any one of the preceding claims: the treatment and purification of water, organic liquids, gases, soils, for the treatment of wastewater, for air purification, for the purification of streams from chemical, mechanical, physical, or organic recycling operations, for chemical recycling and / or cracking of plastics, for the purification of streams in the food industry and in the field of packaging.

Images