专利号:US-2024424490-A1 优先权日:2021-01-25 标 题 :Method of synthesis of carbon-supported platinum group metal or metal alloy nanoparticles 发明人:WNUK PAWEL; LEWERA ADAM; JURCZAKOWSKI RAFAL; POWALA FILIP; KOLODZIEJCZYK JAN 权利人:UNIV WARSZAWSKI 摘要:The presented invention relates to a method of synthesis of carbon-supported platinum group metal or metal alloy nanoparticles, which comprises the following steps:n adsorbing on carbon support complexes of a platinum group metal with a urea complexing agent selected from a group comprising urea, urea derivative, a mixture of urea with at least one urea derivative, and a mixture of at least two urea derivatives; and reducing the complexes adsorbed on the carbon support to metal nanoparticles, forming a product of carbon-supported metal nanoparticles. nn The invention also provides the use of the carbon-supported platinum group metal or metal alloy nanoparticles obtained by the method of the invention as catalyst. n The present invention further relates to a method of adsorption of precursors of platinum group metals on the surface of a carbon support and use of complexes of platinum group metals with urea complexing agent for adsorption of platinum group metal precursors on carbon support.
专利号:US-2024149253-A1 优先权日:2021-02-26 标 题 :Large scale synthesis of oxidative dehydrogenation catalyst 发明人:GAO XIAOLIANG; SIMANZHENKOV VASILY; SULLIVAN DAVID; DE WIT PERRY; DRAG HANNA; KIM YOONHEE 权利人:NOVA CHEM INT SA 摘要:Catalysts and Methods for large-scale production of the catalysts are provided. An exemplary catalyst composition includes molybdenum, vanadium, tellurium, niobium, oxygen. In the catalyst composition, the molar ratio of molybdenum to vanadium is from 1:0.05 to 1:0.60, the molar ratio of molybdenum to tellurium is from 1:0.01 to 1:0.30, and the molar ratio of molybdenum to niobium is from 1:0.01 to 1:0.40. Oxygen is present at least in an amount to satisfy the valency of any present metal oxides, and composition includes less than 1.0 wt. % of sulfur.
专利号:US-11161096-B2 优先权日:2017-01-31 标题 :Synthesis of a MoVNbTe catalyst having an increased specific surface and higher activity for the oxidative dehydrogenation of ethane to ethylene 发明人:MESTL GERHARD; WANNINGER KLAUS; MELZER DANIEL; SANCHEZ-SANCHEZ MARIA CRUZ; TSEGLAKOVA JULIA; LERCHER JOHANNES 权利人:CLARIANT PRODUKTE DEUTSCHLAND 摘要:A novel mixed oxide material is disclosed which comprises molybdenum, vanadium, tellurium and niobium and the use of the mixed oxide material as catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid and a process for producing the mixed oxide material.
专利号:US-11014075-B2 优先权日:2017-01-31 标 题 :Synthesis of a moVNbTe catalyst from low-cost metal oxides 发明人:MESTL GERHARD; WANNINGER KLAUS; MELZER DANIEL; SANCHEZ-SANCHEZ MARIA CRUZ; TSEGLAKOVA JULIA; LERCHER JOHANNES 权利人:CLARIANT PRODUKTE DEUTSCHLAND; CLARIANT PRODUKTE GMBH 摘要:A novel catalyst and process for producing a mixed oxide material containing molybdenum, vanadium, tellurium and niobium is disclosed. The material can be used as a catalyst for the oxidative dehydrogenation of ethane to ethene or the oxidation of propane to acrylic acid.
专利号:WO-2007093765-A1 优先权日:2006-02-13 标题 :Process for the cyanation of aldehydes 发明人:NORTH MICHAEL; BELOKON YURI 权利人:NPIL PHARMACEUTICALS UK LTD; NORTH MICHAEL; BELOKON YURI 摘要:The present invention relates to a process for the cyanation of aldehydes, particularly to the asymmetric cyanation of aldehydes, including the synthesis of chiral cyanohydrins and derivatives thereof, such as chiral O-acyl cyanohydrins. The process of the present invention comprises: reacting the aldehyde with a cyanating agent in the presence of a chiral catalyst and less than a stoichiometric amount of an ionic cyanide source. Chiral catalysts employed in the process according to the present invention are of the formula: (1), (3a), (3b).
专利号:WO-2022158990-A1 优先权日:2021-01-25 标 题 :Method of synthesis of carbon-supported platinum group metal or metal alloy nanoparticles