Abstract: Supported amine polymer adsorbents based on polymers containing only or primarily primary amines sites are to be used as regenerable adsorbents for CO2 capture from ultra-dilute gas streams, such as ambient air, or from mixtures of gases containing preferably at least 10% oxygen. and can also be useful for use at the moderate gas pressures found in typical post-combustion capture processes, such as flue gas from large point sources such as coal-fired power plants. Preferred supported solid amine adsorbents of this invention are based on poly(allylamine) (“PAA”) and poly(vinyl amine) (“PVAm”), both of which are linear polymers, and their derivatives, containing substantially all primary amine groups, supported on substrates. Preferred such substrates include silica mesocellular foam (MCF) and mesoporous-.gamma.-alumina, as well on mesoporous-.gamma.-alumina coated throughout the pores of MCF, most preferably of monolithic structure.

Abstract: A gas product may be formed from a hydrocarbon feed by a method that may comprise introducing water to a reactor, wherein the reactor comprises a lobular catalyst, introducing the hydrocarbon feed to the reactor, and contacting the hydrocarbon feed, the water, and the lobular catalyst within the reactor, such that at least a portion of the hydrocarbon feed is reacted to form a gas product. The water in the reactor may be at a temperature and pressure such that the water is a supercritical fluid. At least 20 wt. % of the hydrocarbon feed may be converted to the gas product in the reactor.

Abstract: Metal-organic frameworks (MOFs) comprising square arrays of nickel cationic centers linked by N-donor organic ligands and pillared with tungsten oxyfluoride anion are described. In an exemplary MOF, the N-donor organic ligands are pyrazine and the MOF has a pore size of less than about 7 angstroms. Methods of using the MOF to selectively capture carbon dioxide, e.g., from gas compositions comprising nitrogen and/or methane, are also described.

Abstract: Provided is a water-absorbing resin with which the enzyme activity of a urease that generates ammonia from urea can be inhibited and a pH increase on the surface of an absorbent article, which causes skin rashes or the like, can be suppressed. This water-absorbing resin has an oxidation-reduction potential of a swollen gel of at least 260 mV, as measured by the following oxidation-reduction potential measuring method. (Oxidation-reduction potential measuring method) 60 mL of ion exchange water having an oxidation-reduction potential of 390±10 mV is added to a beaker. The oxidation-reduction potential of the ion exchange water is measured after an electrode of a pH meter is inserted into the ion exchange water and left alone for 15 minutes. Next, 2.0 g of a water-absorbing resin is added to the ion exchange water that is being stirred at 400 rpm, and the resultant is stirred to obtain a swollen gel.

Abstract: The present invention relates to a process for producing a Fischer-Tropsch synthesis catalyst wherein from 15 to 40 mol. % of the cobalt thereon is in the form of cobalt oxide. The present invention also relates to a start-up process for a reduced-and-passivated cobalt-containing Fischer-Tropsch catalyst, wherein from 15 to 40 mol. % of the cobalt thereon is in the form of cobalt oxide and the reduced-and-passivated catalyst is activated by contacting the catalyst with a syngas stream.

Abstract: In one aspect, the disclosure relates to relates to CO2-free methods of co-producing hydrogen and solid forms of carbon via methane decomposition. The methods are efficient, self-sustaining, and environmentally sound. In a further aspect, the disclosure relates to recyclable and recoverable catalysts supported by solid forms of carbon and methods for recycling the catalysts. In some aspects, the disclosure relates to catalysts that do not require support by solid forms of carbon. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Abstract: A product includes an aminopolymer material formed into a self-supporting structure, the aminopolymer material including crosslinked aminopolymers having amine sites for the capture of carbon dioxide molecules.

Abstract: A composite oxide including an oxide of a metal element L and an oxide of a metal element N, and represented by a composition of general formula LnN1-n, wherein the metal element L is a Group 1 element, a Group 2 element, or a Group 1 element and a Group 2 element, the metal element N comprises a Group 1 or Group 2 element other than the metal element L, n is 0.001 or more and 0.300 or less, the oxide of the metal element L and the oxide of the metal element N form no solid solution, and oxide particles of the metal element L are deposited on surfaces of oxide particles of the metal element N. Also, a metal-carrier material and an ammonia synthesis catalyst having, supported on this composite oxide, particles of at least one metal M selected from the group consisting of cobalt, iron, and nickel.

Abstract: Traditional methods for producing lithium carbonate involves thermal precipitation of a lithium sulfate purification liquid and a sodium (potassium) carbonate purification liquid to produce crude lithium carbonate to the production of a refined lithium carbonate wet product. The employment of “reverse feeding, non-circulating mother liquor”, “pre-precipitation supplementary impurity removal” and “high-efficiency desorption” can reduce industrial grade lithium carbonate sulfate anions to 0.03%, increase the main content to 2.5N, reduce battery grade sulfate anions to 0.008%, and stably increase the main content to 3N, or even reach the limit of 3.5N-4N. The high-efficiency desorption involves thermal precipitation with small temperature increases and thermal stirring washing, medium-high temperature strong desorption, and hydrocyclone separation.

Abstract: The plant according to the invention includes a reactor including a combustion chamber in which a fuel is fired with an oxidant to form a carbon dioxide-containing flue gas stream. The plant also includes a waste heat recovery unit in fluid connection with the combustion chamber, configured to capture heat from the flue gas stream. The plant also includes a flue gas compression unit in fluid connection with the waste heat recovery unit, configured to increase the pressure of the flue gas stream. The plant also includes a scrubber in fluid connection with the flue gas compression unit, configured to remove sulphur oxides and/or nitrogen oxides from the flue gas stream and to cool flue gas stream by means of the scrubbing medium. The plant also includes an absorption unit in fluid connection with the scrubber, configured to absorb carbon dioxide from the flue gas stream.

Abstract: An integrated process and system for measurement and treatment of toxic gases in deep natural gas. The process comprises: cooling and depressurizing deep natural gas and then drying same; sequentially performing radon, hydrogen sulfide, and mercury measurements on the dried deep natural gas; if it is found after the measurements that the concentrations of radon, hydrogen sulfide, and mercury in the deep natural gas are substandard, sequentially performing harmless treatment on radon and partial mercury, hydrogen sulfide, and remaining mercury in the deep natural gas; sequentially performing mercury, radon, and hydrogen sulfide measurements on the deep natural gas having experienced the harmless treatment; and if the concentrations of mercury, radon, and hydrogen sulfide in the deep natural gas are substandard, continuing to sequentially perform harmless treatment on radon and partial mercury, hydrogen sulfide, and remaining mercury in the deep natural gas, until the concentrations thereof reach the standards.

Abstract: The present application discloses a catalyst for thermally stably degradation of VOCs, a preparation method thereof and a use thereof. The catalyst includes: a substrate, and an auxiliary agent and an active component which are on the substrate. The auxiliary agent includes a first auxiliary agent and a second auxiliary agent; the first auxiliary agent includes a cobalt-containing auxiliary agent and/or an iron-containing auxiliary agent; and the second auxiliary agent includes an aluminum-based auxiliary agent. The combination of specific first and second auxiliary agents is introduced into the catalyst of the present application, so that oxygen molecules can be quickly adsorbed and activated during the catalytic combustion process of VOCs with forming a catalytic synergy center with the active component, thereby improving the removal efficiency for VOCs and facilitating the long-term stable operation of the catalyst under harsh conditions such as high-temperature and high-humidity conditions.

Abstract: Gasification method comprising the following steps of: a) bringing, in a main reactor, beads made of steel, an alloy, glass or ceramic, at a temperature between 600° C. and 1,000° C., into contact with a feedstock mixture comprising water and a biomass, the biomass comprising an organic part and salts, the main reactor being pressurised to more than 224 bar and at a temperature above 200° C. b) gasifying the organic part in the presence of the beads, thereby forming a gaseous phase, an aqueous phase and a solid residue, and whereby the salts precipitate on the beads, forming a salt shell covering the beads, c) separating the beads from the organic part, d) regenerating the beads.

Abstract: Provided herein are amine-functionalized cellulose polymers useful for carbon dioxide capture and methods of preparation and use thereof.

Abstract: A polyacrylic acid (salt)-based super absorbent polymer, includes carbon, oxygen, and sodium on the surface thereof, and satisfies Equation 1: XC?O+XO-C?O?6(at %) wherein, XC?O represents the content (at %) of carbon included in a CO bond structure among all elements present on the surface of the super absorbent polymer according to XPS analysis, and XO—C?O represents the content (at %) of carbon included in a O—C?O bond structure among all elements present on the surface of the super absorbent polymer according to XPS analysis.

Abstract: A carbon dioxide absorbent containing a polyamine compound (A) having an alicyclic hydrocarbon structure, wherein a content of the polyamine compound (A) is 60% by mass or more.

Abstract: A process to remove H2S from a stream comprising the steps of adding Melamine cyanurate, optionally a silica nanoparticle composition, and optionally a triazine. The stream is selected from the group consisting of Oil streams, Gas streams, CO2 point source purification streams and Geothermal Energy System streams.

Abstract: A hydrometallurgical coprecipitation process for leached cathode materials includes adjusting a pH and agitation of an aqueous acidic leach solution in successive stages of a multi-stage reactor system for generating coprecipitated particles of a targeted morphology, particle size range, and surface characteristics. The aqueous acidic leach solution (leach solution) initially forms seed particles based on increasing pH. In successive stages, the pH and the stirring rate are varied for growing the seed particles into progressively larger particles as additional leach solution is introduced.

Abstract: One variation of a method includes: conveying a mixture of air in a working fluid through a compressor to heat and pressurize the mixture to promote absorption of carbon dioxide into the working fluid; depositing the mixture in a high-pressure vessel configured to remove air from the mixture of carbon dioxide in the working fluid; conveying the mixture through a turbine to reduce pressure and promote desorption of carbon dioxide from the working fluid; depositing the mixture in a low-pressure vessel for removal of carbon dioxide; in response to a temperature of an interior environment falling below a target range, conveying the working fluid through a heating element configured to transfer heat from the working fluid into the interior environment; and, in response to the temperature exceeding the target range, conveying the working fluid through a cooling element configured to transfer heat from the working fluid into an exterior environment.

Abstract: Provided is a chemical decontamination method that shortens the decomposition time of a reduction decontamination agent. An oxidization decontamination, a decomposition of an oxidization decontamination agent, and reduction decontamination using an oxalic acid aqueous solution are performed on a target piping of a BWR plant. After that, the oxalic acid is decomposed (S7). That is, a part of the oxalic acid is decomposed by irradiating the oxalic acid aqueous solution with ultraviolet rays upstream of a decomposition device (S8), and Fe3+ in the aqueous solution is converted to Fe2+. Hydrogen peroxide is supplied to the decomposition device (S9). In the decomposition device, the oxalic acid is decomposed by a catalyst and hydrogen peroxide, Fe2+ and hydrogen peroxide react to produce Fe3+ and OH*, and the oxalic acid is decomposed by OH*. A corrosion potential of the aqueous solution flowing out from the decomposition device is measured (S11).