CAS: 21348-59-4; Niobium(V) Oxalate

专利信息

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:WO-2005085390-A1
优先权日:2004-03-09
标 题:Cobalt catalyst for the synthesis of fischer-tropsch, catalyst support, processes for the preparation of support and catalyst and the use of the catalyst
发明人：DOS SANTOS ANA CARLOTA BELIZAR; PEREIRA ANTONIO TELHADO; SOUSA-AGUIAR EDUARDO FALABELLA; MORAES JORGE LUIZ; DE OLIVEIRA KENSLEY ALVES; SUGAYA MARCOS DE FREITAS; SCHMAL MARTIN; MONTEIRO ROBSON DE SOUZA; VICENTINI VALERIA PERFEITO
权利人:CBMM SA; OXITENO SA IND E COMERCIO; PETROLEO BRASILEIRO SA; DOS SANTOS ANA CARLOTA BELIZAR; PEREIRA ANTONIO TELHADO; SOUSA-AGUIAR EDUARDO FALABELLA; MORAES JORGE LUIZ; DE OLIVEIRA KENSLEY ALVES; SUGAYA MARCOS DE FREITAS; SCHMAL MARTIN; MONTEIRO ROBSON DE SOUZA; VICENTINI VALERIA PERFEITO
摘要:The present invention is related to a cobalt catalyst supported on high-surface area niobium pentoxide for Fischer-Tropsch synthesis, the support of this catalyst which is a niobium pentoxide (Nb2O5) with a BET surface area in the range of 30 to 160 m2.g-1, the process for the preparation of the high-surface area support of niobium pentoxide by calcination of a hydrated niobium oxide or by synthesis from either organic or inorganic niobium precursors, a process for the preparation of said catalyst, and the use of the catalyst for the Fischer-Tropsch synthesis to obtain hydrocarbons with carbon atoms equal or higher than five containing specially linear paraffins in the diesel fuel range, and without a significant formation of light hydrocarbons, olefins, aromatics and oxygenated compounds.

专利号:US-2017246619-A1
优先权日:2014-09-26
标 题 :Solid state synthesis of oxidative dehydrogenation catalysts
发明人：BASSET JEAN-MARIE; ZHU HAIBO; ROSENFELD DEVON C; LAVEILLE PACO
权利人:DOW GLOBAL TECHNOLOGIES LLC
摘要:Synthesize a nickel oxide-based oxidative dehydrogenation catalyst via a solvent-free process that comprises sequential steps a. mixing without added solvent a combination of a solid nickel precursor, a solid oxalate or oxalic acid and, optionally, a doping amount of a metal precursor for a period of time sufficient to convert the combination to a visually homogenous mixture; and b. calcining the visually homogeneous mixture at a temperature within a range of from greater than 250° C. to less than 800° C. for a time within a range of from 30 minutes to 360 minutes in an oxygen-containing atmosphere, preferably air, to form a calcined oxidative dehydrogenation catalyst. As a modification of the process, add an intermediate step between steps a. and b. to dry the homo geneous mixture at a temperature within a range of from 50° C. to 90° C. for a period of time within a range of from 10 minutes to 600 minutes to form a dried mixture. The resulting catalyst may be used in oxidative dehydrogenation of ethane.

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-8722284-B2
优先权日:2009-09-30
标 题:Synthesis of stable and durable catalyst composition for fuel cell
发明人：CAMPBELL STEPHEN A; KREMLIAKOVA NATALIA
权利人:CAMPBELL STEPHEN A; KREMLIAKOVA NATALIA; DAIMLER AG; FORD MOTOR CO
摘要:Provided is a catalyst composition comprising an intermetallic phase comprising Pt and a metal selected from either Nb or Ta, and a dioxide of the metal. Also provided is a low temperature method for making such compositions that results in the formation of intermetallic phase with small crystallite size and thus greater mass activity. In particular, a Pt 3 Nb—NbO 2 catalyst composition can be prepared that is useful as a fuel cell catalyst and offers a very stable chemical substrate along with good electrode activity and remarkable durability. The use of Pt 3 Nb—NbO 2 can considerably prolong fuel cell lifetime by reducing Pt dissolution levels and subsequent voltage losses. The Pt 3 Nb—NbO 2 can be used in the cathode and/or anode of a fuel cell.

专利号:US-8623780-B2
优先权日:2009-02-10
标 题 :Preparation process of a complex oxide catalyst and application thereof to the synthesis of the acrylic acid
发明人：LI XUEMEI; QIN CHUNHUA; JIAO KUN; FENG SHIQIANG; ZHUANG YAN; MA JIANXUE; ZHU XIAODONG; SHAO JINGMING
权利人:LI XUEMEI; QIN CHUNHUA; JIAO KUN; FENG SHIQIANG; ZHUANG YAN; MA JIANXUE; ZHU XIAODONG; SHAO JINGMING; SHANGHAI HUAYI ACRYLIC ACID CO
摘要:The present invention provides a complex oxide catalyst whose general formula is Mo 12 V a Cu b W c X d Y e O f /Z. reducing agent needs to be added into the catalyst during the preparation process of the active component of the catalyst and (or) molding process of the catalyst. Specifically, X is at least one selected from a group consisting of Nb, Sb, Sr, Ba and Te; Y is at least one selected from a group consisting of La, Ce, Nd, Sm and Cs; “aâ€? is ranging from 2 to 8; “bâ€? is ranging from 1 to 6; “câ€? is ranging from 0.5 to 5; “dâ€? is ranging from 0.01 to 4; “eâ€? is ranging from 0.01 to 4; f is determined by the oxidation state of the component element; Z is silicon powder; the reducing agent is C2ËœC6 diol or polyol.