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CAS号7782-50-5 氯气 | CAS号7439-98-7 钼粉 | CAS号10241-05-1 五氯化钼 | CAS号13320-71-3 molybdenum tetr... | CAS号7647-01-0 盐酸 | CAS号30411-56-4 tetrachlorobis{... | CAS号7439-98-7 钼粉📜盐酸置于molybdic Acid体系中,用 Not Given 用作溶剂,化学反应生成三氯化钼
参考文献:在空气悬浮液中通过空气氧化形成含钼铁氧体fe 3-X Mo X O 4(x = 0.04-0.19)
标题:在空气悬浮液中通过空气氧化形成含钼铁氧体fe 3-X Mo X O 4(x = 0.04-0.19)
摘要:钼-轴承铁氧体(mo:铁.Tot,摩尔比0.015-0.069:1)已经由铁(空气氧化形成ii)氢氧化物悬浮液,其是在mo的存在下制备的iii:Fe离子,在莫tot.在ph 9.0和65oc的初始悬浮液中,摩尔比为0.032-0.326:1.发现含钼铁氧体的晶格常数fe 3-X Mo X O 4随x值的增加而线性增加.这种关系与化学计量的含钼铁氧体的关系一致.
Doi:10.1039/dt9830001197
专利信息
专利号:US-6033624-A
优先权日:1995-02-15
标题 :Methods for the manufacturing of nanostructured metals, metal carbides, and metal alloys
发明人:GONSALVES KENNETH E; RANGARAJAN SRI PRAKASH
权利人:UNIV CONNETICUT
摘要:Methods for the manufacture of nanostructured metals, metal carbides, and metal alloys are presented, such metals including nanostructured aluminum, chromium, iron, molybdenum, vanadium, and steel. Preferably, the nanostructured steel is of the M50 type, and comprises iron, molybdenum, chromium, vanadium and carbon. Synthesis of M50 steel further comprising nanostructured aluminum, aluminum oxide, or aluminum nitride is also described. In accordance with an important feature of this invention, the grain size of the metals and metal alloys is in the nanometer range. In accordance with the method of the present invention, the nanostructured metals, metal carbides, and metal alloys are prepared via chemical synthesis from aluminum, iron, molybdenum, chromium and vanadium starting materials. Decomposition of metal precursors or co-precipitation or precipitation of metal precursors is followed by consolidation of the resulting nanostructured powders. Alternatively, nanostructured M50 steel may be obtained by mixing of nanocrystalline chromium, iron, molybdenum, and vanadium powders, followed by ball-milling, and consolidation. The nanostructured metals, metal carbides, and metal alloys of this invention find particular utility in the manufacture of cutting tools and bearings, and in ferrofluids, magnetic memory systems, and catalysis.
专利号:US-4912182-A
优先权日:1988-08-31
标 题 :Synthesis of high vinyl polybutadiene utilizing a molybdenum catalyst system
发明人:CASTNER KENNETH F; BELL ANTHONY J; GLENN KIMBERLY M
权利人:GOODYEAR TIRE & RUBBER
摘要:High vinyl polybutadiene rubber is utilized in a variety of applications. For instance, high vinyl polybutadiene is utilized in tire tread rubber compositions because it provides both good traction and rolling resistance. The present invention discloses a technique for synthesizing high vinyl polybutadiene utilizing a molybdenum catalyst system. This molybdenum catalyst system can be utilized in aliphatic solvents with high yields of about 75% being attained. The molybdenum catalyst systems of this invention are comprised of (a) a molybdenum containing compound which is prepared by modifying molybdenum pentachloride, molybdenum trichloride, or molybdenum tetrachloride with an alkyl carboxylic acid or an aryl carboxylic; and (b) an aluminum containing compound which is prepared by modifying a trialkyl aluminum compound with a phenol. The molecular weight of the high vinyl polybutadiene being prepared can be reduced by modifying the trialkyl aluminum compound with an allylphenol, such as 2-allylphenol.
专利号:WO-9925689-A1
优先权日:1997-11-14
标题 :Process for the preparation of acetal derivatives of 1,4-dihydropyridines
发明人:KARUP GUNNAR LEO; PREIKSCHAT HERBERT FRITZ; PEDERSEN SOEREN BOLS
权利人:GEA FARMACEUTISK FABRIK AS; KARUP GUNNAR LEO; PREIKSCHAT HERBERT FRITZ; PEDERSEN SOEREN BOLS
摘要:A process for the preparation of 1,4-dihydropyridine acetal derivatives of formula (II) wherein R1 each, independently, represents H, Cl or CF¿3; R?2 represents H, C¿1?-C5 alkyl, C3-C6 cycloalkyl or aralkyl; R?3 and R4¿ which may be the same or different, represent C¿1?-C5 alkyl, C3-C6 cycloalkyl, aralkyl or together represent -(CH2)m-, wherein m is 2 or 3, and n is 1 or 2, wherein the 1,4-dihydropyridine ring structure is formed by a Hantzsch synthesis carried out in one or more steps using a compound containing a group of formula (a); wherein R?3 and R4¿ have the same meanings as defined above, as one of the reactants in the Hantzsch condensation, is described. The Hantzsch synthesis, or at least one step thereof, is carried out in a solvent, which is capable of forming an azeotrope with water, under azeotropic removal of water of reaction. The compounds of formula (II) are useful as intermediates for the preparation of pharmaceutically active 1,4-dihydropyridines and other intermediates of use for such purpose.
专利号:US-2012149919-A1
优先权日:2009-08-26
标题 :Maleic anhydride synthesis catalyst precursor and process for its preparation
发明人:ALTWASSER STEFAN; DOBNER CORNELIA KATHARINA; WILMER HAGEN; ROSOWSKI FRANK
权利人:ALTWASSER STEFAN; DOBNER CORNELIA KATHARINA; WILMER HAGEN; ROSOWSKI FRANK; BASF SE
摘要:A process for preparing a vanadium, phosphorus, and oxygen comprising catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, which comprisesn (a) reacting vanadium pentoxide with 102% to 110% strength phosphoric acid in the presence of isobutanol and optionally of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) (i) drying the isolated precipitate down to a residual isobutanol content of less than 5% by weight;n (ii) then passing a gas which in addition to one or more inert gases comprises 0.1% to 9% by volume of oxygen through the dried precipitate, directly or after isolation, in the temperature range from 130° C. to 200° C.
专利号:JP-H02105802-A
优先权日:1988-08-31
标题:Synthesis of high vinyl polybutadiene using molybdenum catalyst system
专利号:EP-0358589-A1
优先权日:1988-08-31
标题:Synthesis of high vinyl polybutadiene utilizing a molybdenum catalyst system