Abstract:
A composite comprising a hydroxyapatite and at least one activated carbon which is present during hydroxyapatite synthesis. The activated carbon may be embedded or incorporated into or coated onto the hydroxyapatite. The activated carbon preferably increases the hydroxyapatite porosity, e.g., providing a higher pore volume and/or BET surface area than a hydroxyapatite material without activated carbon. The hydroxyapatite may be calcium-deficient. The composite may further comprises sulfur. The composite is in the form of particles having a D50 of at least 20 μm, a BET surface area of at least 120 m 2 /g; and/or a total pore volume of at least 0.3 cm3/g. An adsorbent material comprising the hydroxyapatite composite or a blend of the composite with a hydroxyapatite without activated carbon, and its use for removal of contaminants such as organics, metals and/or non-metals from effluents.
Abstract:
A metal-organic framework (MOF) body is disclosed which comprises MOF crystallites adhered to each other via a MOF binder. The MOF crystallites and the MOF binder are formed of HKUST-1, i.e. Cu 3 (BTC) 2 -3H 2 O. The MOF body has utility for storing and/or separating gases such as CH 4 , CO 2 , O 2 , NH 3 , Ar, CO, N 2 and C 2 H 4 (ethylene); toxic industrial gases such as benzene, toluene, xylenes, sulphur dioxide, ethylene oxide; and warfare agents such as sarin, mustard gas and derivatives thereof.
Abstract translation:公开了金属有机骨架(MOF)体,其包含通过MOF粘合剂彼此粘合的MOF微晶。 MOF晶粒和MOF粘合剂由HKUST-1即Cu 3(BTC)2 -3 H 2 O 0形成。 MOF体具有用于储存和/或分离气体如CH 4,CO 2,O 2,NH 3, Ar,CO,N 2和C 2 H 4(乙烯); 有毒的工业气体如苯,甲苯,二甲苯,二氧化硫,环氧乙烷; 和诸如沙林,芥子气及其衍生物等战争剂。 p>
Abstract:
A system for processing a gas stream can include a physical solvent unit, an acid gas removal unit upstream or downstream of the physical solvent unit, and an LNG liquefaction unit downstream of the acid gas removal unit. The physical solvent unit is configured to receive a feed gas, remove at least a portion of any C5+ hydrocarbons in the feed gas stream using a physical solvent, and produce a cleaned gas stream comprising the feed gas stream with the portion of the C5+ hydrocarbons removed. The acid gas removal unit is configured to receive the cleaned gas stream, remove at least a portion of any acid gases present in the cleaned gas stream, and produce a treated gas stream. The LNG liquefaction unit is configured to receive the treated gas stream and liquefy at least a portion of the hydrocarbons in the treated gas stream.
Abstract:
Es wird ein Verfahren zur Abtrennung von C 5 -C 8 -Kohlenwasserstoffen und Sauergasen aus einem Fluidstrom beschrieben, bei dem man a) den Fluidstrom in einer Absorptionszone mit einem Absorptionsmittel in Kontakt bringt, das mindestens ein Amin enthält, wobei man einen entsäuerten Fluid strom und ein mit Sauergasen beladenes Absorptionsmittel erhält, b) das beladene Absorptionsmittel in einem ersten Wärmetauscher erwärmt und in eine Dekompressionszone auf einen Druck von 5 bis 10 bar entspannt, wobei man eine C 5 -C 8 -Kohlenwasserstoffe enthaltende Gasphase und ein Kohlenwas serstoff-abgereichertes beladenes Absorptionsmittel erhält, c) das Kohlenwasserstoff-abgereicherte beladene Absorptionsmittel in einem optionalen zweiten Wärmetauscher erwärmt und in einen Stripper leitet, in dem die Sauergase bei einem Druck von 1 bis 2,5 bar durch Zufuhr von Wärme zumindest teilweise freigesetzt werden, wobei man ein regeneriertes Absorptionsmittel und einen Sauergas enthaltenden Strom erhält, und d) das regenerierte Absorptionsmittel in die Absorptionszone zurückführt, wobei man als Heizmedium im zweiten Wärmetauscher das regenerierte Absorptionsmittel verwendet und als Heizmedium im ersten Wärmetauscher das regenerierte Absorptionsmittel nach dem Passieren des zweiten Wärmetauschers verwendet, und die im ersten Wärmetauscher und im zweiten Wärmetauscher übertragenen relativen Wärmemengen so gewichtet, dass die C 5 -C 8 -Kohlenwasserstoffe enthaltende Gasphase 50 bis 97 Vol.-% Sauergase enthält.
Abstract:
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.
Abstract:
Molecular storage materials for incorporating small molecules in solid matrices may find applications in structure elucidation, decontamination, and slow release of active ingredients. The syntheses of 1,3,5,7-tetrakis(2,4-dimethoxyphenyl)adamantane (TDA), 1,3,5,7-tetrakis(4-methoxyphenyl)adamantane, 1,3,5,7-tetrakis(4-methoxy-2-methylphenyl)adamantane, and 1,3,5,7-tetrakis(4-methoxy-2-ethylphenyl)adamantane are reported, together with details on their X-ray crystal structures. All four adamantanes crystallize readily. The octaether shows an unusual level of pseudopolymorphism in the solid state,and includes a wide range of different guest molecules in its crystal lattices. Thus far, 20 different inclusion complexes with guest molecules ranging from methanol or trifluorobenzene were characterized. Both nitromethane and benzene were taken up into inclusion materials and were shown to be released by one of three different processes.
Abstract:
Processes for separating benzene from a stream with non-aromatics. The benzene is selectively adsorbed onto an adsorbent. The non-aromatics may be passed to a cracking section and a hot effluent from the cracking zone may be used to desorb the benzene from the adsorbent. Also hydrogen may be used to desorb the benzene. The adsorption section including the adsorbent may include two or more vessels being operated in alternating modes between adsorption and desorption.
Abstract:
A method of making an activated carbon honeycomb filter article, as defined herein, including: extruding a batch mixture to form an extruded honeycomb body, the batch including: an activated carbon powder; a first organic binder powder; a rheological plasticizing liquid; a porous inorganic binder powder; an extrusion aid; and water by superaddition, drying the extruded honeycomb body; and heat treating the dried honeycomb body. Also disclosed is an honeycomb filter article, having: an activated carbon; a porous inorganic binder powder; a BET surface area of from 950 m 2 /g to 1600 m 2 /g; a cell density of from 50 to 2000 cpsi; and a density of from 0.5 to 0.8 g/cm 3 .