The present disclosure relates to a method of preparing a magnetic particle having a polymer matrix (P) and at least one magnetic core (M), preferably at least two magnetic cores (M), wherein the polymer matrix (P) comprises at least one hypercrosslinked polymer, wherein the method comprises (i) providing at least one magnetic core (M), preferably at least two magnetic cores (M), (ii) providing polymer precursor molecules, (iii) polymerizing the polymer precursor molecules according to (ii) in the presence of the at least one magnetic core (M), thereby forming a particle comprising the at least one magnetic core (M). Further, the present disclosure relates to particles obtained or obtainable by this method as well as to the use of these particles. In a further aspect, the disclosure relates to a method for determining at least one analyte in a fluid sample having the step of contacting of the magnetic particle with a fluid sample having or suspected of having the at least one analyte.

Methods for the manufacture of sorbent compositions, sorbent compositions and methods for using the sorbent compositions. The methods include the utilization of an acidic halogen solution as a source of a halogen species that is dispersed on a solid sorbent. The use of the acidic halogen solution results in a highly active halogen species that demonstrates improved efficacy for the removal of heavy metal(s) from a flue gas. The sorbent composition includes a substantially amorphous halogen species associated with a solid sorbent such as powdered activated carbon (PAC).

The disclosure generally relates to CCS sorbents, particularly for CO.sub.2/H.sub.2O displacement desorption process. The sorbent includes an aluminum oxide support and an alkali metal salt impregnated on the support, and a silicon modification of the sorbent to reduce water uptake by the sorbent and make it more hydrophobic. The silicon modification can be an organosilyl moiety added after the initial sorbent is complete, or a silica source added to the aluminum oxide structure, typically via impregnation. The sorbents demonstrate better H.sub.2O/CO.sub.2 ratios. Compositions and methods of making are disclosed.

This invention introduces a method of preparing a carbon-based sulfur-loading iron-containing adsorbent for mercury removal, which can solve the problems in the prior art that sulfur-rich heavy organic materials have low-value utilization and the elemental mercury in atmosphere is hard to be efficiently and economically removed by the existing mercury removal agents. A carbon-based sulfur-loading iron-containing adsorbent for mercury removal is prepared in this invention. The adsorbent with a porous structure is prepared in situ by performing steps such as chemical activation of sulfur-rich heavy organic materials that are rich in iron. The adsorbent prepared herein has good mercury removal performance in simulated coal-fired flue gas. This invention not only improves the utilization value of sulfur-rich heavy organic materials, but also prevents SO.sub.X pollution caused by the combustion of sulfur-rich heavy organic materials and controls mercury pollution in the coal-fired flue gas.

Disclosed are embodiments of a filter unit containing a water adsorbent material in the form of water adsorbent particles in a packed bed and a gas adsorbent material in the form of gas adsorbent particles in a packed bed. In embodiments, the gas adsorbent material is downstream from the water adsorbent material in a direction of operation. Further disclosed are methods of preparing and using the filter units.

The invention provides highly reactive nano-sized alumina particle compositions, including alumina compositions with a BET surface areas on the order of 2000 m.sup.2/g. Also disclosed are impregnated alumina supports comprising materials that are metal oxides or carbonates. Methods for the synthesis and fabrication of these compositions are provided, along methods for the use of these compositions as sorbents.

The present disclosure provides methods and compositions for mitigating residue transfer from diatomaceous earth-based compositions. Some aspects of the disclosure provide a method of reducing residue transfer from a diatomaceous earth-based material by contacting a diatomaceous earth-based material with a content of a layered silicate solution sufficient to reduce residue transfer therefrom. Other aspects of the disclosure provide animal litter compositions including particles of a diatomaceous earth material at least partially coated by a layered silicate. Still other aspects of the disclosure provide a method of preparing an animal litter composition having reduced residue transfer, the method including forming an animal litter composition as a mixture of particles of a diatomaceous earth-based material and a layered silicate.

In one aspect, the present invention provides a chromatographic stationary phase material for various different modes of chromatography represented by Formula 1: [X](W).sub.a(Q).sub.b(T).sub.c (Formula 1). X can be a high purity chromatographic core composition having a surface comprising a silica core material, metal oxide core material, an inorganic-organic hybrid material or a group of block copolymers thereof. W can be absent and/or can include hydrogen and/or can include a hydroxyl on the surface of X. Q can be a functional group that minimizes retention variation over time (drift) under chromatographic conditions utilizing low water concentrations. T can include one or more hydrophilic, polar, ionizable, and/or charged functional groups that chromatographically interact with the analyte. Additionally, b and c can be positive numbers, with the ratio 0.05≤(b/c)≤100, and a≥0.

Method of preparing a selenium nanomaterial and selenium nanomaterial articles. The method may include forming a saccharide coating on a surface of a solid support material, treating the solid support material having the saccharide coating on the surface with a selenous acid solution, and heating the solid support material to form the selenium nanomaterial on the surface of the solid porous support material. The saccharide may include a monosaccharide, a disaccharide, or a polysaccharide, or a combination thereof, such as sucrose, or fructose, or a combination thereof.

An activated carbon sorbent composition comprising activated carbon and a passivation agent, wherein the activated carbon sorbent composition exhibits reduced self-heating or auto-ignition properties as compared to the activated carbon. The activated carbon sorbent composition may be utilized to sequester contaminants such as mercury from a flue gas stream. The passivation agent includes a sulfur species, and may be a sulfur oxide compound, a sulfide compound, or an organic sulfur compound. Methods for the manufacture of the activated carbon sorbent composition and for the sequestration of contaminants in a flue gas stream using the composition are also disclosed.