CAS: 1314-11-0; Strontium Oxide

上下游产品

strontium(II) carbonate strontium peroxide strontium(II) iodide hydrogen

Strontium;Dinitrate 反应生成超细氧化锶
参考文献:Greskovich,Charles D.;oclair,Chester R.
标题:Greskovich,Charles D.;oclair,Chester R.

专利信息

专利号:US-7897135-B2
优先权日:2004-09-27
标 题 :Carbon combustion synthesis of oxides
发明人：MARTIROSYAN KAREN S; LUSS DAN
权利人:UNIV HOUSTON
摘要:The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen. The high-temperature exothermic reaction between the carbon and oxygen generates a self-sustaining reaction in the form of a propagating temperature wave that causes a reaction among the reactants. The reaction proceeds rapidly following ignition, and the final product comprises simple and/or complex oxides of elements present in the oxide precursor(s). CCSO also enables synthesis of oxides that cannot be produced by conventional SHS, such as when the pure metal is pyrophoric (such as Li or La) or such as when it melts at room temperature (e.g., Ga) or such as the combustion heat of the metal is relatively low.

专利号:US-11745159-B2
优先权日:2017-10-20
标题:Heated nanowells for polynucleotide synthesis
发明人：MARSH EUGENE P; INDERMUHLE PIERRE F; PECK BILL JAMES
权利人:TWIST BIOSCIENCE CORP
摘要:Defined sequence RNA synthesis by 3′→5′ direction is now well established and currently in use for synthesis and development of vast variety of therapeutic grade RNA and Si RNA etc. A number of such synthetic RNA requires a modification or labeling of 3′-end of an oligonucleotide. The synthesis of 3′-end modified RNA requiring lipophilic, long chain ligands or chromophores, using 3′→5′ synthesis methodology is challenging, requires corresponding solid support and generally results in low coupling efficiency and lower purity of the final oligonucleotide in general because of large amount of truncated sequences containing desired hydrophobic modification. We have approached this problem by developing reverse RNA monomer phosphoramidites for RNA synthesis in 5′→3′-direction. They lead to very clean oligonucleotide synthesis allowing for introduction of various modifications at the 3′-end.

专利号:WO-2024163733-A1
优先权日:2023-02-01
标题:Electrochemical synthesis with redox stable nucleotides
发明人：WU TIANDI; LACKEY JEREMY; LIN YANYOU; PITSCH STEFAN
权利人:TWIST BIOSCIENCE CORP
摘要:Provided herein are compositions, devices, systems and methods for constructing and storing polynucleotides encoding information with redox resistant bases. The compositions, devices, systems, and methods described herein provide for storage or synthesis of a library comprising a plurality of polynucleotides with one or more redox resistance bases. Further provided herein are methods to increase DNA synthesis yield and fidelity.

专利号:US-2024083755-A1
优先权日:2021-11-16
标 题:CO2 hydrogenation catalysts for the commercial production of syngas
发明人：SCHUETZLE DENNIS; SCHUETZLE ROBERT; GALLOWAY ANJA RUMPLECKER; HANBURY ORION
权利人:INFINIUM TECHNOLOGY LLC
摘要:The present invention is generally directed to the production of low-carbon syngas from captured CO2 and renewable H2. The H2 is generated from water using an electrolyzer powered by renewable electricity, or from any other method of low-carbon H2 production. The improved catalysts use low-cost metals, they can be produced economically in commercial quantities, and they are chemically and physically stable up to 2,100° F. CO2 conversion is between 80% and 100% with CO selectivity of greater than 99%. The catalysts don't sinter or form coke when converting H2:CO2 mixtures to syngas in the operating ranges of 1,300-1,800° F., pressures of 75-450 psi, and space velocities of 2,000-100,000 hr−1. The catalysts are stable, exhibiting between 0 and 1% CO2 conversion decline per 1,000 hrs. The syngas can be used for the synthesis of low-carbon fuels and chemicals, or for the production of purified H2. The H2 can be used at the production site for the synthesis of low-carbon chemical products or compressed for transportation use.

专利号:US-2025171322-A1
优先权日:2022-03-01
标题:Catalyst support materials for use in ammonia synthesis
发明人：O'HAYRE RYAN P; CADIGAN CHRISTOPHER A; HUANG JAKE D
权利人:OHAYRE RYAN P; CADIGAN CHRISTOPHER A; HUANG JAKE D; COLORADO SCHOOL OF MINES
摘要:Described herein are catalyst support materials for use in synthesizing ammonia (NH 3 ) from nitrogen gas (N 2 ) and hydrogen gas (H 2 ) and methods of making the same. The support material may comprise (MgO) x (BaO) y (Al 2 O 3 ) z and/or (MgO) x (SrO) y (Al 2 O 3 ) z , on which an ammonia synthesis catalyst such as ruthenium is dispersed. When the catalyst support material comprises (MgO) x (BaO) y (Al 2 O 3 ) z , x is from about 0.05 to about 0.7, y is from about 0.05 to about 0.6, and z is from about 0.3 to about 0.5. When the catalyst support material comprises (MgO) x (SrO) y (Al 2 O 3 ) z , x is from about 0.4 to about 0.7, y is from about 0.05 to about 0.5, and z is from about 0.05 to about 0.3.

专利号:US-6039929-A
优先权日:1997-12-15
标题 :Synthesis of monoclinic celsian
发明人：LEE ILZOO; COVINO JOSEPHINE
权利人:US NAVY
摘要:A process for producing monoclinic celsian comprising the steps of forming a mixture of an alkoxide of silica, an alkoxide of aluminum, and a salt of barium; adding a catalyst of a fluorine containing compound to the mixture; calcining the catalyzed mixture; and, heat treating the calcined mixture. This process uses a sol-gel process to progressively increase the amount of monoclinic phase in relation to the hexagonal celsian. Additionally, a process for producing monoclinic strontium aluminosilicate is disclosed.