Abstract:
Disclosed is a catalyst and process for producing ammonia (NH3). The process includes contacting a gaseous feed mixture comprising nitrogen (N2) and hydrogen (H2) with a metal hydride material under reaction conditions sufficient to produce a product stream comprising NH3.
Abstract:
SuperDegas process refers to innovative process of the liquid sulfur collection and degassing which takes place in the underground container in a concrete pit or a carbon steel vessel located in the concrete pit. SuperDegas process consists of at least three compartments: (1) sulfur collection to agitate and create turbulent, higher velocity, and higher pressure in the liquid sulfur for more effective degassing by using vertical pumps; (2) consists of the proprietary air spargers and Morpholine catalyst for degassing. Morpholine catalyst degas the liquid sulfur 30 times faster than Quinoline or any other solvent with sparging air and within 1 hour residence time from 16-30 hours and to meet less than 10 ppmw of H2S in liquid sulfur. (3) The last compartment receives the degassed sulfur by overflow and transport through a pump or pumps to other facilities. An eductor will sweep vapor phase containing H2S, vaporized Morpholine with air where the pit vent can be sent to incineration or the reaction furnace. The tail gas stream from SRU can sweep the pit and the discharge shall be recycled to the tail gas unit, which ultimately zero emission can be achieved.
Abstract:
Disclosed in certain implementations is a catalysis composition that includes a metal catalyst and a support material impregnated with the metal catalyst.
Abstract:
This invention relates to molecular catalysts and chemical reactions utilizing the same, and particularly to catalysts and catalytic methods for reduction of molecular nitrogen. The molecular catalytic platform provided herein is capable of the facile reduction of molecular nitrogen under useful conditions such as room temperature or less and atmospheric pressure or less.
Abstract:
An oxygen reduction catalyst of an embodiment includes: a stack of single-layer graphenes; and a phosphorus compound, wherein some of carbon atoms of the graphenes are replaced by nitrogen atoms, and the phosphorus compound has a peak of phosphorus 2p orbital of 133.0 to 134.5 eV in X-ray photoelectron spectrum.
Abstract:
A catalyst for the desulfurization and deodorization of gasoline, which is expressed by the formula: QlBmHn[AxMyOz](1+m+n)−, where: Q denotes a quaternary ammonium cation consisting of R1R2R3R4N+, in which R1, R2, R3, and R4 each denotes independently a C1 to C20 saturated alkyl group, respectively, provided that at least one of R1, R2, R3, and R4 denotes a C4 to C20 saturated alkyl group; B denotes a metal cation of Na+ or/and K+; H denotes a hydrogen atom; A denotes a central atom of B, P, As, Si or Al; M denotes a coordinated atom of W or Mo; O denotes an oxygen atom; 1≦l≦10, 0≦m≦3, 0≦n≦3, l+m+n≦14, x=1 or 2, 9≦y≦18, 34≦z≦62, and l, m, n, y and z all are integers. A method of the desulfurization and deodorization of gasoline by using the catalyst comprises the steps of: mixing the catalyst and an aqueous solution of hydrogen peroxide, and then adding the gasoline to react them with stirring under conditions of 25 to 90° C. and 0.1 to 1 MPa for 10 to 180 min. An odorless gasoline can be obtained through settlement or centrifugation, and the catalyst is recovered.
Abstract translation:一种用于汽油脱硫除臭的催化剂,其由下式表示:QlBmHn [AxMyOz](1 + m + n) - ,其中:Q表示由R1R2R3R4N +组成的季铵阳离子,其中R1,R2,R3, 并且R 4各自独立地表示C1〜C20饱和烷基,条件是R 1,R 2,R 3和R 4中的至少一个表示C 4至C 20饱和烷基; B表示Na +或/和K +的金属阳离子; H表示氢原子; A表示B,P,As,Si或Al的中心原子; M表示W或Mo的配位原子; O表示氧原子; 1 @ l @ 10,0 @ m @ 3,0 @ n @ 3,l + m + n @ 14,x = 1或2,9 @ y @ 18,34 @ z @ 62和l,m,n ,y和z都是整数。 通过使用催化剂对汽油进行脱硫除臭的方法包括以下步骤:将催化剂和过氧化氢水溶液混合,然后加入汽油使其在25〜90℃,0.1〜 至1MPa 10至180分钟。 可以通过沉降或离心获得无臭汽油,回收催化剂。
Abstract:
To provide nitrogen-containing aromatic compounds with excellent oxygen reduction activity, metal complexes containing them, and catalysts and electrodes employing the same, the present invention provides an aromatic compound satisfying the following conditions (a) and (b): (a) It has 2 or more structures surrounded by at least 4 coordinatable nitrogen atoms (which structures may be the same or different), (b) At least one of the nitrogen atoms composing the structure is a nitrogen atom in a 6-membered nitrogen-containing heterocyclic ring.
Abstract:
The invention relates to a metal-containing organosilica catalyst, and use thereof in metal-catalyzed reactions. The invention relates to a process of preparation of the metal-containing organosilica catalyst comprising i) mixing a silicon source with an hydrolytic solvent; ii) adding one or more metal catalyst or a precursor thereof; iii) treating the mixture of step ii) with a condensation catalyst and iv) optionally treating the mixture resulting from step iii) with one or more reducing or oxydating agent such as to provide the required oxidation level to the metal catalyst.
Abstract:
Supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, and an organic additive, and methods for synthesizing supported metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic additive, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.
Abstract:
Stable electron acceptor compositions are composed of a plurality of pillared metal complexes disposed on a supporting substrate. At least one Group VIII metal at zero valence is entrapped within this matrix. The complexes comprise from one to about 100 units of the formula:--(Y.sup.1 O.sub.3 --Z--Y.sup.2 O.sub.3)Me.sup.Y --Y.sup.1 and Y.sup.2 being phosphorus or arsenic; Z being a divalent group which reversibly forms a stable reduced form and contains two conjugated cationic centers having a negative E.sup..smallcircle..sub.red value; and Me.sup.Y being a divalent, trivalent, or tetravalent metal of Group IIIA, IIIB, IVA, or IVB having an atomic number of at least 21 or a lanthanide with bonded anions. The units are bound to the substrate through an organic polymer having side chains derivatized with phosphonate or arsonate groups. Counter anions balance the charge of Z. The compositions can be used in the decomposition of water to yield hydrogen gas, the sensing of oxygen, and as catalysts.