专利号:US-2024075466-A1 优先权日:2021-04-09 标 题:One-Pot Synthesis of Transition Metal-Promoted Chabazites 发明人:VAN TENDELOO LEEN; SCHUETZE FRANK-WALTER; VERHEYEN ELKE JANE JUNE 权利人:UMICORE AG & CO KG 摘要:The invention provides methods for a one-pot synthesis of molecular sieves of the CHA-type. The method uses molecular and non-molecular sieves as sources of silicon and aluminum. A first OSDA is selected from tetraethylenepentamine (TEPA) and triethy-lenepentamine (TETA). The synthesis mixture comprises a first metal selected from copper, iron and zinc. Optionally, the synthesis mixture may furthermore comprise a second OSDA and/or a second metal selected from manganese, cesium, magnesium, calcium, strontium, barium, yttrium, titanium, zirconium, niobium, iron, zinc, silver, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof. The molecular sieves of the CHA-type obtainable by the method can be used as SCR-catalytically active substances for the removal of nitrogen oxides from exhaust gases of combustion engines.
专利号:US-9920000-B2 优先权日:2012-11-09 标 题 :Synthesis of methyl carbamate and dimethyl carbonate (DMC) in presence of stripping with inert gas or superheated vapours and a reactor for the same 发明人:RANADE VIVEK VINAYAK; KELKAR ASHUTOSH ANANT; RANE VILAS HARI; KINAGE ANIL KISAN; SHINGOTE SAVITA KIRAN; ROY LALITA SANJIB 权利人:COUNCIL SCIENT IND RES 摘要:The invention relates to synthesis of methyl carbamate (MC) and dimethyl carabonate (DMC) in presence of stripping inert gas or superheated methanol vapors using packed column reactor and bubble column reactor.
专利号:WO-2015132801-A1 优先权日:2014-03-03 标 题 :Process for the synthesis of dimethylcarbonate 发明人:RANADE VIVEK VINAYAK; KELKAR ASHUTOSH ANANT; RANE VILAS HARI; KINAGE ANIL KISAN; SHINGOTE SAVITA KIRAN; ROY LALITA SANJIB 权利人:COUNCIL SCIENT IND RES 摘要:The present invention discloses a process for the synthesis of dimethyl carbonate (DMC) and further methyl-N-methyl carbamate (MNMC) starting from urea or methyl carbamate using salts such as nitrate or triflate salts of rare earth elements, transition metals, alkaline earth and alkali metals as catalysts.
专利号:US-2025270090-A1 优先权日:2024-02-27 标题:Low temperature synthesis of monazite-type materials 发明人:ZUR LOYE HANS-CONRAD 权利人:UNIV SOUTH CAROLINA 摘要:The present disclosure is generally directed to methods for forming anhydrous rare earth and actinide phosphate minerals. In some embodiments of the present disclosure, the method generally comprises subjecting rare earth or actinide phosphates or salts thereof to microwave radiation.
专利号:WO-2022222019-A1 优先权日:2021-04-20 标 题 :Total synthesis of varenicline 发明人:ZHOU LIHUA 权利人:SUZHOU FUDE ZHAOFENG BIOCHEMICAL TECH CO LTD 摘要:Provided is a method for the preparation of varenicline or a pharmaceutically acceptable salt thereof. In addition, Also provided are intermediate compounds which are useful in such method.
专利号:US-11773046-B2 优先权日:2020-05-11 标题:Solvothermal synthesis of metal alkanoate and metal oxide nanoparticles 发明人:Treadwell LaRico Juan; DAVIS-WHEELER CLARE 权利人:NAT TECH & ENG SOLUTIONS SANDIA LLC 摘要:A facile solvothermal method can be used to synthesize metal alkanoate nanoparticles using a metal nitrate precursor, alcohol/water, and alkanoic acid. The method can produce lanthanide (e.g., La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, or Yb) and transition metal (e.g., Ag, Co, Cu, or Pb) alkanoate nanoparticles (<100 nm) with spherical morphology. These hybrid nanomaterials adopt a lamellar structure consisting of inorganic metal cation layers separated by an alkanoate anion bilayer and exhibit liquid crystalline phases during melting. The metal alkanoate nanoparticles can be calcined to produce metal oxide nanoparticles.