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公开(公告)号：US4296057A
公开(公告)日：1981-10-20
申请号：US182878
申请日：1980-09-02
IPC分类号： C01F7/56 , C04B35/622 , C07C29/70 , C07C29/76 , C04B35/64
CPC分类号： C07C29/76 , C01F7/56 , C04B35/62236 , C07C29/705 , C01P2004/10 , C01P2006/22 , Y10S264/19
摘要： Alumina fibers are prepared by a method comprising(a) forming aluminum methoxide from aluminum alkoxides using methanol;(b) recovering aluminum methoxide as a solid precipitate phase, washing to remove higher alcohols and drying to recover a powder;(c) reacting the recovered powdered aluminum methoxide with dilute hydrochloric acid to form aluminum chlorohydrate; then(d) concentrating the aluminum chlorohydrate solution under vacuum to desired viscosity.
摘要翻译： 氧化铝纤维通过以下方法制备：（a）使用甲醇由烷氧基铝形成甲醇铝; （b）回收作为固体沉淀相的甲醇铝，洗涤以除去高级醇并干燥以回收粉末; （c）使回收的粉末状甲醇铝与稀盐酸反应形成氯化铝; 然后（d）将真空下的氯化铝水溶液浓缩至所需的粘度。
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公开(公告)号：US3987155A
公开(公告)日：1976-10-19
申请号：US558865
申请日：1975-03-17
CPC分类号： B82Y30/00 , B01J35/10 , C01F7/02 , C01F7/36 , B01J35/1019 , B01J35/1047 , B01J35/1061 , B01J35/1071 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/17
摘要： A high-porosity, high-surface area, low-density alumina and a method for preparing said alumina. The alumina typically has a surface area from about 260 to about 400 m.sup.2 /g, a pore volume from about 1.0 to about 2.75 cc/g, a loose bulk density from about 7.5 to about 25 lb/ft.sup.3, and is produced by contacting aqueous alumina slurries with an effective amount of an organic solvent and drying the resulting solvent-aqueous alumina mixture.
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公开(公告)号：US4267161A
公开(公告)日：1981-05-12
申请号：US142587
申请日：1980-04-21
CPC分类号： C07C29/705 , C01F7/56 , C07C29/76 , C01P2004/10 , C01P2006/22 , Y10S264/19
摘要： Aluminum chlorohydrate is prepared by a method comprising(a) forming aluminum methoxide from aluminum alkoxides using methanol;(b) recovering aluminum methoxide as a solid precipitate phase, washing to remove higher alcohols and drying to recover a powder;(c) reacting the recovered powdered aluminum methoxide with dilute hydrochloric acid to form aluminum chlorohydrate.
摘要翻译： 通过包括（a）使用甲醇由烷氧化铝形成甲醇铝的方法制备水合氯化铝; （b）回收作为固体沉淀相的甲醇铝，洗涤以除去高级醇并干燥以回收粉末; （c）使回收的粉末状甲醇铝与稀盐酸反应，形成水合氯化铝。
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公开(公告)号：US4254287A
公开(公告)日：1981-03-03
申请号：US55123
申请日：1979-07-05
CPC分类号： C07C41/36
摘要： Barium catalyst is removed from ethoxylated alcohols prepared using these catalysts by admixing the ethoxylated alcohols with water and mineral acid to precipitate the barium catalyst as a solid then centrifuging to remove the precipitate.
摘要翻译： 从使用这些催化剂制备的乙氧基化醇中除去钡催化剂，通过将乙氧基化醇与水和无机酸混合以沉淀作为固体的钡催化剂，然后离心以除去沉淀物。
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公开(公告)号：US3933685A
公开(公告)日：1976-01-20
申请号：US489959
申请日：1974-07-19
CPC分类号： B01J37/0201 , B01J21/04
摘要： An improvement in a method for producing alpha alumina monohydrate extrudates by mixing acid, water, and alpha alumina monohydrate to form an extrudable mixture; extruding the mixture to produce green alpha alumina monohydrate extrudates and drying the green extrudates, wherein the improvement comprises, contacting the green extrudates with an aqueous solution of catalytic metals in an amount sufficient to impregnate the extrudates with the catalytic metals thus improving the extrudate properties and impregnating the extrudates with catalytic metals.
摘要翻译： 通过混合酸，水和α氧化铝一水合物来生产α-氧化铝一水合物挤出物的方法的改进以形成可挤压混合物; 挤出混合物以产生绿色α氧化铝一水合物挤出物并干燥生坯挤出物，其中改进包括：使生物挤出物与催化金属的水溶液接触，其量足以使催化金属浸渍挤出物，从而改善挤出物性能， 用催化金属浸渍挤出物。
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公开(公告)号：US5100639A
公开(公告)日：1992-03-31
申请号：US659440
申请日：1991-02-22
申请人： Francisco J. Freire , Jon L. Howell , Kaye L. Motz , Craig T. Barker , William C. Ziegenhain , Eileen G. Edwards
发明人： Francisco J. Freire , Jon L. Howell , Kaye L. Motz , Craig T. Barker , William C. Ziegenhain , Eileen G. Edwards
IPC分类号： C01B7/19
摘要： A process for manufacturing high purity anhydrous hydrogen fluoride (HF) having low levels of oxidizable impurities by electrolytically oxidizing the impurities. Specifically, trivalent arsenic impurity in the anhydrous hydrogen fluoride is oxidized to a non-volatile pentavalent arsenic compound. The resultant mixture is distilled to recover high purity anhydrous hydrogen fluoride with low levels of arsenic impurity.
摘要翻译： 一种通过电解氧化杂质制造具有低水平可氧化杂质的高纯度无水氟化氢（HF）的方法。 具体地说，将无水氟化氢中的三价砷杂质氧化为非挥发性五价砷化合物。 将所得混合物蒸馏以回收具有低水平砷杂质的高纯度无水氟化氢。
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公开(公告)号：US4458492A
公开(公告)日：1984-07-10
申请号：US890359
申请日：1978-03-27
摘要： A method for the recovery of geothermal energy from subterranean formations comprising injecting a thermally stable, non-corrosive, non-aqueous fluid into said formation to absorb heat; recovering the heated fluid from the formation; and, recovering heat energy from the heated fluid.
摘要翻译： 一种用于从地层回收地热能的方法，包括将热稳定的非腐蚀性非水性流体注入所述地层以吸收热量; 从地层中回收加热的流体; 并从加热的流体回收热能。
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公开(公告)号：US4133871A
公开(公告)日：1979-01-09
申请号：US820528
申请日：1977-08-01
CPC分类号： C01F7/36 , C01P2006/10 , C01P2006/12 , C01P2006/16
摘要： An improvement in the method of preparing alumina by water hydrolysis of aluminum alkoxides is disclosed. Briefly, the improvement comprising admixing the water and aluminum alkoxide under high velocity conditions prior to passing the resulting admixture to the reactor. The improved process results in a product having improved physical properties, particularly pore volume and bulk density.
摘要翻译： 公开了通过水解铝醇盐制备氧化铝的方法的改进。 简而言之，改进包括在将所得混合物通入反应器之前，在高速条件下混合水和烷氧化铝。 改进的方法产生具有改善的物理性能，特别是孔体积和体积密度的产品。
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公开(公告)号：US4024231A
公开(公告)日：1977-05-17
申请号：US503219
申请日：1974-09-05
CPC分类号： B01J20/08 , B01J21/04 , B01J35/10 , C01F7/36 , B01J35/1019 , B01J35/1042 , B01J35/1047 , B01J35/1061 , B01J35/1085 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/16
摘要： Alumina having a surface area from about 250 to about 500 m.sup.2 /g, a loose bulk density from about 10 to about 30 lbs/ft.sup.3, a pore volume (0-10,000 A) from about 0.6 to about 2.5 cc/g and a pore volume (0-1,000 A) of at least 0.6 cc/g wherein 70 to 95 percent of said pore volume (0-1,000 A) consists of pores having a diameter in the range of 35 to 80 A and a method for producing such alumina by the water hydrolysis of aluminum methoxide.
摘要翻译： 氧化铝具有约250至约500m 2 / g的表面积，约10至约30lbs / ft 3的松散堆积密度，约0.6至约2.5cc / g的孔体积（0-10,000A）和约0.6至约2.5cc / g的孔体积 至少0.6cc / g的体积（0-1,000A），其中70-95％的所述孔体积（0-1,000A）由直径在35至80范围内的孔组成，以及这种氧化铝的制造方法 通过水解甲醇铝。
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公开(公告)号：US4954330A
公开(公告)日：1990-09-04
申请号：US443373
申请日：1989-11-30
IPC分类号： C01B7/19
CPC分类号： C01B7/196 , Y10S210/911
摘要： A process for preparing hydrogen fluoride involving treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with an effective amount of chromium (VI) oxide (i.e., CrO.sub.3) and oxygen such as to oxidize substantially all of the trivalent arsenic to pentavalent arsenic (i.e., As.sup.+3 .fwdarw.As.sup.+5) followed by separation and recovery (e.g., by distillation) of purified anhydrous hydrogen fluoride.
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