摘要:
Polymeric sorbents for reactive gases are provided. More particularly, the polymeric sorbents are a reaction product of a divinylbenzene/maleic anhydride precursor polymeric material with a nitrogen-containing compound. The polymeric sorbent has nitrogen-containing groups that are covalently attached to the polymeric sorbent. The nitrogen-containing groups include a primary amino group, a secondary amino group, a tertiary amino group, or a combination thereof. Additionally, methods of sorbing reactive gases on the polymeric sorbents and compositions resulting from the sorption of reactive gases on the polymeric sorbents are provided.
摘要:
The present invention refers to the use of a surface-treated calcium carbonate-comprising material and/or magnesium carbonate-comprising material as oxygen scavenger; wherein the surface treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts and iron (II)-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof; and wherein the total weight of the surface treatment agent on the total surface area of the at least one calcium carbonate-comprising material and/or magnesium carbonate-comprising material is from 0.01 to 40 mg/m 2 , based on the at least one calcium carbonate-comprising material and/or magnesium carbonate-comprising material.
摘要:
A method for preparing a metal-organic framework (MOF) comprising contacting one or more of a rare earth metal ion component with one or more of a tetratopic ligand component, sufficient to form a rare earth-based MOF for controlling moisture in an environment. A method of moisture control in an environment comprising adsorbing and/or desorbing water vapor in an environment using a MOF, the MOF including one or more of a rare earth metal ion component and one or more of a tetratopic ligand component. A method of controlling moisture in an environment comprising sensing the relative humidity in the environment comprising a MOF; and adsorbing water vapor on the MOF if the relative humidity is above a first level, sufficient to control moisture in an environment. The examples relate to a MOF created from 1,2,4,5-Tetrakis(4-carboxyphenyl)benzene (BTEB) as tetratopic ligand, 2-fluorobenzoic acid and Y(NO3)3, Tb(NO3)3 and Yb(NO3)3 as rare earth metals.
摘要:
Smoking article include a smokable material and an activated carbon particle downstream of the smokable material. The activated carbon particle is produced from a whole seed. The activated carbon particle has a length, width and height. At least two of the length width and height are independently in a range from about 1 mm to about 7.5 mm. The particles can be spheroids, in which case the length, width and height would be the same or similar.
摘要:
In general, this disclosure describes method of capturing and storing CO2 on a vehicle. The method includes contacting an vehicle exhaust gas with one or more of a first metal organic framework (MOF) composition sufficient to separate CO2 from the exhaust gas, contacting the separated CO2 with one or more of a second MOF composition sufficient to store the CO2 and wherein the one or more first MOF composition comprises one or more SIFSIX-n-M MOF and wherein M is a metal and n is 2 or 3. Embodiments also describe an apparatus or system for capturing and storing CO2 onboard a vehicle.
摘要:
A method is described for preparing a sorbent precursor comprising the steps of: (i) forming agglomerates comprising a particulate support material, (ii) coating the agglomerates with a coating mixture powder comprising a particulate sulphidable copper compound and a particulate calcined, rehydratable alumina to form a coated agglomerate, and (iii) drying the coated agglomerate to form a dried sorbent precursor. The sorbent precursor may be sulphided and used to remove heavy metals such as mercury from fluid streams.
摘要:
A method is described for preparing a sorbent comprising the steps of: (i) mixing together a particulate copper sulphide material and a particulate calcined rehydratable alumina, (ii) shaping the mixture, and (iii) drying the shaped mixture to form a dried sorbent.
摘要:
Process for treating a gas contaminated by at least one element selected from the group consisting of heavy metals, organic compounds, and combinations thereof, wherein a calcium-phosphate reactant (reagent) particle comprising apatite is brought into contact with the contaminated gas at a temperature of at least 30° C. and preferably at most 1100° C. The metal(s) and/or organic compound(s) to be removed from the contaminated gas may be selected among the list of: Al, Ag, As, Ba, Be, Bi, Ce, Co, Cd, Cu, Cr, Fe, Hf, Hg, La, Li, Mg, Mn, Mo, Ni, Pb, Pd, Rb, Sb, Se, Sn, Sr, Th, Ti, U, V, Y, Zn, Zr, VOC, aromatic compounds, PAHs, dioxins, furans, or any mixture thereof. In such process, an alkaline compound particle comprising sodium bicarbonate, sodium carbonate, sodium sesquicarbonate (trona), quick lime, hydrated lime, lime stone or combinations thereof, may be further brought into contact with the contaminated gas.
摘要:
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Behandeln eines mit Schadstoffen belasteten Gases mit mindestens einem in einem Adsorptionsapparat eingesetzten, mindestens eine elektrisch leitfähige Lage einer Aktivkohlefasermatte enthaltenden Adsorptionsmodul (45) zum Adsorbieren der Schadstoffe, mit einem elektrischen Stromkreis (17) zum Aufheizen der Aktivkohlefasermatte für das Desorbieren der adsorbierten Schadstoffe und mit einem mittig in das Adsorptionsmodul (45) geführten, Austrittsöffnungen aufweisenden Verteilrohr für ein Spülgas zum Inertisieren und Spülen der Aktivkohlefasermatte. Die Aufgabe der Erfindung besteht darin, eine Vorrichtung und ein Verfahren zum Behandeln eines mit Schadstoffen belasteten Gases bereitzustellen, mit der die Aktivkohlefasern oder Aktivkohlefasermatten gleichmäßig über ihre axiale Länge im Modul auf Desorptionstemperatur erhitzt werden können, eine gleichmäßige Druckverteilung bei ihrer radialen Durchströmung mit dem Gas erreicht wird, die mechanische Stabilität der Aktivkohlefasermatten bei gleichzeitiger Verbesserung des Wirkungsgrades, der Sicherheit und Wirtschaftlichkeit erhöht wird. Gelöst wird diese Aufgabe dadurch, dass das Adsorptionsmodul (45) ein Aktivkohlefasermodul (45 (a ... n) ) umfasst, das gaszuströmseitig aus einer mit Gaseintrittsöffnungen (4) versehenen inneren Lage (innerer Hohlkörper 46) und gasabströmseitig aus einer mit Gasaustrittsöffnungen (6) versehenen äußeren Lage (äusserer Hohlkörper 47) sowie einer von der inneren und äußeren Lage im komprimierten Zustand gehaltenen Aktivkohlefasermatte oder Aktivkohlefaserwicklung (48) gebildet ist, wobei die äußere Lage gegenüber der inneren Lage einen größeren freien Durchströmungsquerschnitt für das Gas aufweist, und dass die innere und äußere Lagen voneinander elektrisch isoliert und an eine Spannungsquelle (16) angeschlossen sind, wobei die innere und äußere Lagen mit der Aktivkohlefasermatte oder Aktivkohlefaserwicklung (48) den Stromkreis (17) bilden, in dem die Aktivkohlefasern quer zur Aktivkohlefaserrichtung vom Strom durchflossen und als Widerstand geschaltet sind.
摘要:
The present invention concerns the use, for gas separation, of at least one zeolite adsorbent material comprising at least one FAU zeolite, said adsorbent having an external surface area greater than 20 m 2 ⋅ g -1 , a non-zeolite phase (PNZ) content such that 0 3 ⋅ g -1 and 0.25 cm 3 ⋅ g -1 , a (Vmicro - Vmeso)/Vmicro ratio of between -0.5 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0