专利号:US-2025129495-A1 优先权日:2021-09-24 标 题:Method for the electrochemical synthesis of ammonia and apparatus for carrying out the method 发明人:FINKELSHTAIN GENNADI; BORCHTCHOUKOVA NINO; SHIROKOV ALEXANDER V; ENGLANDER JOSEPH ALEXANDER; SHARABI RONIT; ZABILSKIY MAXIM; TSAI TSEPIN 权利人:GENCELL LTD 摘要:A method for the electrochemical synthesis of ammonia (NH 3 ) comprises contacting a nitrogen-containing gas with the cathode of an electrochemical cell comprising a cathode, an anode, an alkaline aqueous electrolyte, and preferably an anion exchange membrane. The cathode is a porous gas diffusion electrode which comprises an active layer comprising a material which is capable of catalyzing the electrochemical reduction of nitrogen and is in contact with the electrolyte, a layer of electroconductive material supporting the active layer, and a porous polymer film on the side of the active layer which does not come into contact with the electrolyte and comes into direct contact with the nitrogen-containing gas. A potential over the electrochemical cell is applied to effect the electrochemical synthesis of ammonia from nitrogen and water. The method can be used to synthesize ammonia without using molecular hydrogen.
专利号:US-2025163589-A1 优先权日:2023-11-20 标 题:Method for the electrochemical synthesis of ammonia and installation for carrying out the method 发明人:FINKELSHTAIN GENNADI; BORCHTCHOUKOVA NINO; ENGLANDER JOSEPH ALEXANDER; KADOSH YANIR; LOEW RON YOSEF; HIRSHBERG KACHAL; LISKOVICH MICHAEL 权利人:GENCELL LTD 摘要:A method for the electrochemical synthesis of ammonia comprises:(a) forming from a gas mixture comprising nitrogen and oxygen an atmospheric pressure nonthermal plasma (APNTP) in a plasma device,(b) introducing the APNTP into an aqueous electrolyte solution to form a solution of one or more species of formula NOx−,(c) contacting the solution of (b) with the cathode of an electrochemical cell which comprises a catalyst which is capable of catalyzing the electrochemical reduction of the one or more species of formula NOx− to NH3, and(d) applying a potential or current over the electrochemical cell to effect the electrochemical synthesis of ammonia.
专利号:US-2023114534-A1 优先权日:2021-10-11 标题:High Temperature Chemical Process For The Preparation Of Cesium Tungstate 发明人:CARDARELLI FRANCOIS 权利人:CARDARELLI FRANCOIS 摘要:The present disclosure broadly relates to a high temperature chemical process for the synthesis of cesium tungstate in the solid state and the preparation of aqueous solutions or deuterated solutions of cesium tungstate. More specifically, but not exclusively, the present disclosure relates to a high temperature chemical process in which tungsten oxide compounds such as tungsten oxides, or natural or synthetic concentrates such as wolframite or scheelite, tungsten industrial by-products or there mixture thereof, are mixed with cesium compounds such as cesium carbonate, or cesium sulfate, or cesium hydroxide or their mixtures thereof and the mixture is roasted in air or oxygen at high temperature inside a kiln. After cooling, the solid sintered mass containing cesium tungstate is leached or dissolved with water or heavy water for producing dense aqueous solutions or deuterated solutions of cesium tungstate.
专利号:US-11485721-B2 优先权日:2017-11-21 标 题:Method for the metal-free preparation of a biaryl by a photosplicing reaction and their uses 发明人:KLOSS FLORIAN; NEUWIRTH TONI; HAENSCH VEIT; HERTWECK CHRISTIAN 权利人:LEIBNIZ INST FUER NATURSTOFF FORSCHUNG UND INFEKTIONSBIOLOGIE E V HANS KNOELL INST HKI; LEIBNIZ INST FUER NATURSTOFF FORSCHUNG UND INFEKTIONSBIOLOGIE E V HANS KNOELL INST 摘要:The present invention relates to a method for the metal-free preparation of a biaryl compound by a photosplicing reaction and its use in the preparation of chemical compounds, preferably of active ingredients e.g. in the fields of pharmaceuticals and agrochemicals. In particular, it refers to a method for the regiocontrolled preparation of a biaryl compound of formula (I): Ar—Ar′ by photochemically reacting a precursor compound of formula (II): Ar—L—Ar′ to form a biaryl compound of general formula: Ar—L—Ar′(II)→Ar—Ar′ (I) wherein Ar and Ar′, independently of each other, represent an unsubstituted or substituted C6-C20 aryl group or a heteroaryl group with 5-20 ring atoms selected from carbon, nitrogen, oxygen and sulfur, and L represents a group —X—Y—Z— as defined herein. The biaryl compounds are generally suitable as intermediates or key building blocks in a very broad spectrum of organic chemical syntheses and their respective utilities. Their use within the field of synthesis of active ingredients is an aspect of the invention, and their use in the preparation of pharmaceutically active ingredients is particularly preferred.
专利号:US-7968673-B2 优先权日:2007-02-20 标 题:Polyazacrown-based materials for mercury capture and synthesis of those materials 发明人:REDKO MIKHAIL Y; JACKSON JAMES E; TARABARA VOLODYMYR; TAUROZZI JULIAN 权利人:UNIV MICHIGAN STATE 摘要:Polyazacrown polymers based on the azacrown monomer 1,4,7,10,13,16,21,24-octaazabicyclo[8.8.8]hexacosane (“H 6 Aza222â€?) are disclosed. Azacrown monomer units are preferably linked with a suitable linking agent, and the resulting polymers are can absorb mercury from a water stream and form a stable complex therewith. Methods of making and using the polyazacrown polymers are also disclosed. The polymers have a high absorption capacity for and selectivity towards mercury, which properties are useful for the remediation of mercury-contaminated water. The polymers can be regenerated by the efficient removal of the absorbed mercury. Further, the absorbed mercury that is liberated from the polyazacrown polymers can be effectively concentrated and captured to prevent its re-release into the environment.
专利号:US-11623210-B2 优先权日:2020-05-27 标题:Method for preparing silicate/carbon composite from attapulgite, and use of silicate/carbon composite 发明人:LI XIAZHANG; ZHANG HAIGUANG; Chu Xini; ZHU JIE; YAN XIANGYU; ZUO SHIXIANG; YAO CHAO; LIU WENJIE; MAO HUIHUI 权利人:UNIV CHANGZHOU 摘要:A method for preparing a silicate/carbon composite from attapulgite, and use of the silicate/carbon composite are disclosed. The preparation method includes: (1) with attapulgite as a raw material, preparing SiO 2 with a special structure; (2) dispersing the prepared SiO 2 in water to obtain a suspension, and subjecting the suspension to ultrasonic dispersion; dissolving a metal nitrate in the suspension, adding NH 4 Cl, and adding ammonia water dropwise to the suspension; and adding sucrose to obtain a suspension; (3) subjecting the suspension to microwave hydrothermal reaction; after the reaction is completed, centrifuging a resulting system; and separating a resulting solid; and (4) subjecting the solid to high-temperature calcination in a muffle furnace, and grinding a resulting product to obtain the silicate/carbon composite, which can be used in photocatalytic ammonia synthesis.
摘要:USEPA/Office of Water; Federal-State Toxicology and Risk Analysis Committee (FSTRAC). Summary of State and Federal Drinking Water Standards and Guidelines (11/93) To Present 摘要:U.S. Department of Transportation. 2012 Emergency Response Guidebook. Washington, D.C. 2012 摘要:NIOSH. NIOSH Pocket Guide to Chemical Hazards. DHHS (NIOSH) Publication No. 97-140. Washington, D.C. U.S. Government Printing Office, 1997., p. 367 摘要:L1: Fred Senese (2005). "Why is mercury a liquid at STP ". General Chemistry Online at Frostburg State University. http://antoine.frostburg.edu/chem/senese/101/inorganic/faq/why-is-mercury-liquid.shtml