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1.发明授权
公开(公告)号：US4287095A
公开(公告)日：1981-09-01
申请号：US162542
申请日：1980-06-24
CPC分类号： B01J23/78 , B01J23/755 , B01J23/83 , B01J27/22
摘要： Highly active catalysts, suitable for use in hydrogenation and other reactions, are prepared from an alloy of one or more of the Group VIII transition metals with a Group IIA metal, a Group IVB metal, or an actinide. The alloy is ground to the desired particle size and is thereafter reacted with a gas, such as carbon monoxide and hydrogen, to form an intimate physical admixture of the Group VIII metal or its corresponding carbide with the oxide of other metal.
摘要翻译： 适用于氢化和其他反应的高活性催化剂由一种或多种第VIII族过渡金属与IIA族金属，IVB族金属或锕系元素的合金制备。 将合金研磨成所需的粒度，然后与气体如一氧化碳和氢气反应，以形成第VIII族金属或其相应的碳化物与其它金属的氧化物的紧密的物理混合物。
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公开(公告)号：US4032613A
公开(公告)日：1977-06-28
申请号：US639024
申请日：1975-12-09
CPC分类号： C01F7/66 , C01G49/0009 , C22B21/0015 , Y02P10/234
摘要： Iron is removed from concentrated aluminum nitrate solution by solvent extraction with tri-n-butyl phosphate.
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公开(公告)号：US4588565A
公开(公告)日：1986-05-13
申请号：US636765
申请日：1984-08-01
IPC分类号： C01D15/04
CPC分类号： C01D15/04
摘要： Lithium chloride is separated from its mixtures with calcium chloride by preferentially dissolving the lithium chloride in tetrahydrofuran. The separation is achieved since the lithium chloride is soluble in tetrahydrofuran, while the calcium chloride is not. The process is particularly applicable to geothermal brines.
摘要翻译： 通过优选将氯化锂溶解在四氢呋喃中，将氯化锂与氯化钙的混合物分离。 分离是因为氯化锂可溶于四氢呋喃而氯化钙不溶解。 该方法特别适用于地热盐水。
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公开(公告)号：US3985855A
公开(公告)日：1976-10-12
申请号：US576393
申请日：1975-05-09
CPC分类号： C22B15/008 , Y02P10/236
摘要： A process for recovering copper from oxidized ores by utilizing alkaline leachants having incorporated therein siliceous material to inhibit the dehydration of the formed copper complex, thereby permitting increased recovery and improved settling and filtering characteristics of the reacted slurry.
摘要翻译： 通过使用掺入硅质材料的碱性浸出剂从氧化矿石中回收铜的方法，以抑制所形成的铜络合物的脱水，由此可以提高回收率，提高反应浆料的沉降和过滤特性。
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公开(公告)号：US4264776A
公开(公告)日：1981-04-28
申请号：US645987
申请日：1976-01-02
申请人： Arnold Hershman , Donald J. Bauer
发明人： Arnold Hershman , Donald J. Bauer
IPC分类号： C07C85/11 , C07C87/28 , C07C135/02
CPC分类号： C07C209/62 , C07C213/08
摘要： Tertiary amines such as alkyl or benzyl amines are catalytically oxidized by oxygen over an activated carbon catalyst to selectively produce secondary amines.
摘要翻译： 叔胺如烷基或苄基胺通过氧在活性炭催化剂上催化氧化以选择性地产生仲胺。
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公开(公告)号：US4239735A
公开(公告)日：1980-12-16
申请号：US72957
申请日：1979-09-06
IPC分类号： C01F7/22
CPC分类号： C01F7/22
摘要： A method for producing substantially pure alumina from kaolin clay by removing in a soluble form impurities which contaminate the alumina while the aluminum is maintained in an insoluble form. This is accomplished by leaching calcined kaolin clay with at least 36 weight percent hydrochloric acid to dissolve the impurities and convert the aluminum to insoluble aluminum chloride and maintaining the hydrochloric acid concentration in the leach liquor at at least 36 weight percent by the injection of hydrochloric acid gas. The insoluble aluminum chloride is then separated from the dissolved impurities and subjected to a second leaching step to solubilize and separate it from the silica gangue. Substantially pure AlCl.sub.3.sup.. 6H.sub.2 O crystals are recovered from solution and converted to alumina by conventional means. In an alternate embodiment, the process may be practiced on uncalcined clay and includes the addition of a source of fluoride ions, such as H.sub.2 SiF.sub.6, to the at least 36 weight percent hydrochloric acid leach liquor. An optional preleaching step utilizing 2N to 6N mineral acid is also disclosed.
摘要翻译： 一种从高岭土生产基本上纯的氧化铝的方法，通过以可溶形式除去在铝保持不溶形式时污染氧化铝的杂质。 这是通过用至少36重量％盐酸的煅烧高岭土浸出来溶解杂质并将铝转化成不溶性氯化铝并通过注入盐酸将浸出液中的盐酸浓度保持在至少36重量％来实现的 加油站。 然后将不溶性氯化铝与溶解的杂质分离，并进行第二浸出步骤以溶解并将其与二氧化硅g石分离。 从溶液中回收基本纯的AlCl3.6H2O晶体，并通过常规方法转化为氧化铝。 在一个替代实施方案中，该方法可以在未煅烧的粘土上实施，并且包括向至少36重量％的盐酸浸出液中加入氟离子源，例如H 2 SiF 6。 还公开了使用2N至6N无机酸的任选的预漂洗步骤。
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公开(公告)号：US4272491A
公开(公告)日：1981-06-09
申请号：US44814
申请日：1979-06-01
CPC分类号： C22B60/0226
摘要： There is disclosed a process for extracting uranium values from a uranium-containing carbonaceous ore such as lignite. This process includes the step of treating the ore with an aqueous leach solution containing a water-soluble ferric salt.
摘要翻译： 公开了一种从含铀的含碳矿石如褐煤中提取铀值的方法。 该方法包括用含有水溶性铁盐的含水浸出溶液处理矿石的步骤。
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公开(公告)号：US4260589A
公开(公告)日：1981-04-07
申请号：US56151
申请日：1979-07-10
CPC分类号： C01F7/34
摘要： Aluminum nitrate solutions are subjected to hydrolysis at elevated temperature and pressure, with the pressure being kept relatively low by continual bleeding of reactant gases from the reaction vessel. The resultant product is a noncrystalline alumina that may be readily converted to crystalline alumina by roasting.In addition, the discharged reactant gases are employed for leaching of clay to provide aluminum nitrate feed solution.
摘要翻译： 硝酸铝溶液在升高的温度和压力下进行水解，通过来自反应容器的反应物气体的持续渗出，压力保持相对较低。 所得产物是非结晶氧化铝，其可以通过焙烧容易地转化为结晶氧化铝。 此外，排出的反应气体用于浸出粘土以提供硝酸铝进料溶液。
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公开(公告)号：US4094955A
公开(公告)日：1978-06-13
申请号：US809882
申请日：1977-06-24
摘要： Alumina monohydrate is produced by leaching calcined clay and subjecting the leach liquor to pressure hydrolysis wherein the vapor and heat resulting from the pressure hydrolysis are directly utilized for leaching of the calcined clay. The aluminum monohydrate may be roasted to yield alumina.
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公开(公告)号：US4044115A
公开(公告)日：1977-08-23
申请号：US702262
申请日：1976-07-02
摘要： Alumina monohydrate is produced by treating aluminum nitrate solution at a temperature of about 250.degree. to 350.degree. C and a pressure of about 500 to 2500 psig.
摘要翻译： 氧化铝一水合物通过在约250℃至350℃的温度和约500至2500psig的压力下处理硝酸铝溶液来制备。
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