A method for producing polyHIPE porous monoliths, of the polyHIPE type or in the form of a rigid foam, by hardening solutions of condensed tannins in the presence of oil and/or air or in the presence of a non-water-miscible volatile solvent and/or air. Also disclosed is the use of these materials in the areas of catalysis, chromatography, heat and sound insulation, tissue engineering and medication release and as a floral foam.

The present disclosure is directed to a desulphurization agent for removing sulphurous species from a diluent or process stream, and a use of such agent. In some examples, the agent may include a compound of manganese, pore forming particles and a compound of copper. The agent may be introduced into or mixed with the diluent or process stream to effectuate removal of sulphurous species from the diluent or process stream.

Improved methods for preparing highly porous mesh media and loading functional particles into the media are described herein. The highly porous media can be used as supports for catalyst materials for a variety of applications, such as desulfurization. Pre-manufactured catalyst can be loaded into the sintered open media. Thus, the contamination issues associated wetlay paper making and pre-oxidation, the deactivation issues associated with the sintering and pre-oxidation steps, and the corrosion issues associated with the catalyst formation step can be avoided. The methods described herein result in the formation of highly porous media with functional particles immobilized inside.

Provided are a superabsorbent polymer and a preparation method thereof. In the superabsorbent polymer according to the present invention, a low-temperature foaming agent are used together with a high-temperature foaming agent to control the size and distribution of internal pores of the superabsorbent polymer, thereby increasing absorption rate under load without reduction in gel strength.

A zinc aluminium silicate nanoparticles/granular red mud (ZAS/GRM) composite material of Zn.sup.2+-modified industrial waste red mud and a preparation method and application thereof are disclosed, belonging to the technical field of adsorbent preparation. The industrial waste red mud is used as a raw material to prepare Zn.sup.2+-modified red mud for ZAS/GRM adsorbent.

An exhaust gas purification catalyst including: a substrate; and an adsorbent portion provided to the substrate and containing a Si-containing adsorbent material. The adsorbent portion includes a plurality of voids, and in a cross section orthogonal to an exhaust gas flow direction, the percentage of a total area of the voids that are present in the adsorbent portion and that each satisfy the expression below is greater than 5% to 30% or less with respect to an apparent area of the adsorbent portion present on the substrate. Expression: L/{2(S)}1.1. (L is a perimeter of the void in the cross section, and S is an area of the void in the cross section.)

Absorbent element for spilled petroleum or its derivatives comprising an oil-absorbent, hydrophobic and oleophilic material, essentially based on polyurethane foam, having a specific weight in the range of 15-30 g/l and delimiting open cells and closed cells, the latter being in a percentage equal to or lower than 10% of the total cells. The invention further relates to an assembly comprising a plurality of such elements and a method for fabricating an oil-absorbent material.

The present invention relates to a super absorbent resin, and the super absorbent resin can exhibit a fast absorption rate and high gel strength even in a partially swollen state through the size optimization of partially swollen gel particles. Therefore, the use of the super absorbent resin can effectively prevent a rewetting phenomenon.

The present invention relates to a super absorbent polymer having not only excellent absorption rate and absorbency under load but also excellent rewetting properties, and a method for preparing the same.

Provided are an adsorbent for trapping a radioactive iodine gas generated in a process of oxidizing a nuclear fuel at a high temperature after use and a method of preparing the same, and more particularly, a radioactive iodine gas adsorbent which is formed of bismuth as a main component, thereby exhibiting an excellent radioactive iodine gas trapping capability and an excellent thermal stability after trapping, and a method of preparing the same. An adsorbent for trapping a radioactive iodine gas prepared by a method of preparing an adsorbent for trapping a radioactive iodine gas according to the present disclosure may effectively trap a radioactive iodine off-gas generated in a nuclear fuel pre-treated oxidizing process after use. Particularly, the adsorbent may trap iodine in a larger amount, which is twice or more, than a silver-containing zeolite widely used to trap a radioactive iodine gas, and the trapped iodine forms a stable compound, which is more advantageous for long-term storage. In addition, since an iodine gas is trapped using inexpensive bismuth, instead of expensive silver, in consideration of trapping a large amount of a radioactive iodine gas, the adsorbent has very excellent economic feasibility.