Abstract:
A carbon dioxide adsorbent may include a complex oxide including barium and titanium, wherein the complex oxide has a perovskite crystalline structure and is represented by the general formula BaxTiyOz, and an atomic ratio of Ba/Ti ranges from about 0.95 to about 1.7. The carbon dioxide adsorbent may be included in a carbon dioxide capture module. The carbon dioxide adsorbent may also be used in a method of separating carbon dioxide.
Abstract:
Organosilica materials, which are a polymer of at least one independent monomer of Formula [Z1OZ2OSiCH2]3 (I), wherein Z1 and Z2 each independently represent a hydrogen atom, a C1-C4 alkyl group or a bond to a silicon atom of another monomer and at least one other monomer is provided herein. Methods of preparing and processes of using the organosilica materials, e.g., for gas separation, color removal etc., are also provided herein.
Abstract:
A filter unit may include an electrode structure, a fluid-purifying flow path, and a pH adjusting chamber. The electrode structure may include a cathode, a cation exchange membrane, an anion exchange membrane, and an anode in that order. The fluid-purifying flow path may be at least one of a path in the cathode, between the cathode and the cation exchange membrane, between the anion exchange membrane and the anode, and in the anode. The fluid-purifying flow path may include an adsorption function. The pH adjusting chamber may be between the cation exchange membrane and the anion exchange membrane. The pH adjusting chamber may be configured to control the pH of the fluid in the fluid-purifying flow path.
Abstract:
There is provided a sorbent for removing metabolic waste products from a dialysis liquid, the sorbent comprising a layer of immobilized uremic toxin-treating enzyme particles intermixed with cation exchange particles.
Abstract:
The present disclosure relates, according to some embodiments, reactive self-indicating adsorbent materials, methods, and systems. A system may comprise, for example, a reactive self indicating adsorbent material, wherein the reactive self indicating adsorbent material comprises at least one super paramagnetic particle and a semi permeable support, wherein the at least one super paramagnetic particle is configured such that at least one magnetic property of the at least one super paramagnetic particle changes upon contact with an adsorbate; and/or at least one detector configured and arranged to detect the at least one magnetic property. In some embodiments, a method for assessing the performance and/or remaining life of an adsorbent material may comprise (a) contacting a fluid comprising an adsorbate with the adsorbent material under conditions that permit the adsorbate to contact the at least one super paramagnetic particle, wherein a change in a magnetic property of the at least one super paramagnetic particle occurs upon contact with the adsorbate; (b) detecting the magnetic property of the at least one super paramagnetic particle; and/or (c) comparing the detected magnetic property to a reference to produce an assessment of the performance and/or remaining life of the adsorbent material.
Abstract:
The present invention relates to a process for purifying a gas stream comprising hydrogen sulfide or mercaptans, or mixtures thereof. The gas stream can be a sour natural gas stream, a landfill gas or an industrial gas stream. The process comprises contacting the gas stream at effective absorption conditions including an absorption temperature less than about 300° C. with a solid absorbent effective to absorb the hydrogen sulfide, or mercaptans or mixtures thereof to provide a purified gas stream. Method is useful for treating gas streams having up to 90 vol-% hydrogen sulfide, or treating highly pure hydrogen streams. The invention is useful as a guard bed for fuel cells and sensitive laboratory instruments. The invention can also be employed to treat steam reformer product hydrogen streams without the need for further compression of the product hydrogen streams.
Abstract:
A reaction product of silicious material, aluminum metal, and an aqueous solution is disclosed. The reaction product may be used to form a sorbent that is used to purify water of contaminants such as biological matter, dyes, soluble metals, arsenic, or radioactive elements. Additives may be added to the reaction product to further improve the sorption qualities of the sorbent. Water purification devices having the sorbent are also disclosed.
Abstract:
The present disclosure is directed to a desulphurisation 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.
Abstract:
The present invention relates to a magnetic resonance imaging (MRI) contrast agent, particularly an MRI contrast agent derived from nanoparticle that is porous first metal-doped second metal oxide nanoparticle with a central cavity, and a method for producing the same. The MRI contrast agent made in accordance with the present invention can be used not only as a drug-delivery agent for therapy but also as an MRI contrast agent for diagnosis.
Abstract:
Disclosed are methods of forming zone coated substrates for use in catalytic converters, as well as washcoat compositions and methods suitable for using in preparation of the zone coated substrates, and the zone coated substrates formed thereby. The zone coated substrates can include a Passive NOx Adsorption zone and a catalytic zone. Also disclosed are exhaust treatment systems, and vehicles, such as diesel vehicles, using catalytic converters and exhaust treatment systems using the zone coated substrates.