公开(公告)号：US06305833B1

公开(公告)日：2001-10-23

申请号：US09143405

申请日：1998-08-28

申请人： Hans Christoph Horn ,  Otto Kumberger ,  Marco Millies ,  Norbert Neth ,  Wolfgang Jürgen Pöpel ,  Christopher William Rieker ,  Michael Jolyon Sprague ,  Manfred Stroezel

发明人： Hans Christoph Horn ,  Otto Kumberger ,  Marco Millies ,  Norbert Neth ,  Wolfgang Jürgen Pöpel ,  Christopher William Rieker ,  Michael Jolyon Sprague ,  Manfred Stroezel

IPC分类号： B01F1502

CPC分类号： C01G1/00 ,  B01D9/005 ,  B01D9/0054 ,  B01F5/106

摘要： A process for producing solids by precipitation in a mixer to form a mixture of solid and liquid, where the starting materials are fed into a mixing apparatus which has essentially a rotationally symmetrical mixing chamber which has a rotor disposed therein and is formed by a peripheral wall and two end walls, and where a) the starting materials are each fed to at least one inlet opening in the peripheral wall of the mixing chamber, and b) the solid-containing mixture which is formed is removed from at least one outlet opening in the peripheral wall of the mixing chamber.

摘要翻译： 一种通过在混合器中沉淀以形成固体和液体的混合物来生产固体的方法，其中将原料进料到基本上具有旋转对称的混合室的混合装置中，该混合室具有设置在其中的转子，并且由周壁 和两个端壁，并且其中原料各自被供给到混合室的周壁中的至少一个入口开口，和b）形成的固体混合物从外围的至少一个出口开口去除 混合室的墙壁。

公开(公告)号：US6028027A

公开(公告)日：2000-02-22

申请号：US29643

申请日：1998-03-17

申请人： Michael Baier ,  Christopher William Rieker ,  Otto Hofstadt ,  Wolfgang Buchele ,  Wolfgang Jurgen Popel ,  Hermann Petersen ,  Norbert Neth

发明人： Michael Baier ,  Christopher William Rieker ,  Otto Hofstadt ,  Wolfgang Buchele ,  Wolfgang Jurgen Popel ,  Hermann Petersen ,  Norbert Neth

IPC分类号： B01J23/78 ,  B01J23/80 ,  B01J23/84 ,  B01J23/85 ,  B01J37/00 ,  C07C5/333 ,  C07C15/46 ,  B01J23/00 ,  B01J23/58 ,  C07C2/00 ,  C07C15/00

CPC分类号： B01J37/0009 ,  B01J23/78 ,  C07C5/3332

摘要： Catalysts comprising iron and potassium and, if desired, further elements, which catalysts are suitable for dehydrogenating hydrocarbons to give the corresponding olefinically unsaturated hydrocarbons, are prepared by calcining a finely divided dry or aqueous mixture of an iron compound with a potassium compound and, if desired, compounds of further elements in a first step that agglomerates having a diameter of from 5 to 50 .mu.m and formed from smaller individual particles are obtained and, in a second step, preferably after shaping, calcining it at from 300 to 1000.degree. C., with the maximum calcination temperature in the second step preferably being at least 30.degree. below the calcination temperature in the first step. The catalysts thus prepared are useful, in particular, for dehydrogenating ethylbenzene to give styrene.

摘要翻译： PCT No.PCT / EP96 / 04028 Sec。 371日期：1998年3月17日 102（e）1998年3月17日PCT PCT 1996年9月13日PCT公布。 公开号WO97 / 10898 日期1997年3月27日包含铁和钾以及如果需要的其它元素的催化剂是通过将细碎的干燥或含水混合物与铁化合物的焙烧而制备的，该催化剂适用于使烃脱氢得到相应的烯属不饱和烃 钾化合物，并且如果需要，获得在第一步骤中的另外的元素的化合物，其具有直径为5至50μm并且由较小的单个颗粒形成的附聚物，并且在第二步中，优选在成型之后，从其煅烧 300〜1000℃，第二步骤中的最高煅烧温度优选在第一步骤的煅烧温度以下至少30℃。 因此制备的催化剂特别适用于使乙苯脱氢得到苯乙烯。

公开(公告)号：US4178309A

公开(公告)日：1979-12-11

申请号：US930160

申请日：1978-08-02

申请人： Dietrich Luetzow ,  Norbert Neth ,  Ulrich Wagner ,  Klaus Volkamer

发明人： Dietrich Luetzow ,  Norbert Neth ,  Ulrich Wagner ,  Klaus Volkamer

IPC分类号： C07C275/06 ,  C07C67/00 ,  C07C239/00 ,  C07C273/18 ,  C07C127/15

CPC分类号： C07C273/189

摘要： A process for the manufacture of symmetrical dialkylureas by reacting monoalkylamines with CO.sub.2 at an elevated temperature and under superatmospheric pressure, in which the unconverted starting materials, water and the by-products formed in the reaction zone, as well as alkylamine alkylcarbamate, after thermal decomposition into monoalkylamine, CO.sub.2 and water, are separated from the dialkylurea formed, and thereafter a part of the unconverted starting materials plus by-products, with or without water, may or may not be recycled to the reaction zone, before isolating an aqueous solution, containing monoalkylamines, CO.sub.2 and other by-products, which solution is treated with alkali metal hydroxide solution in a column, the monoalkylamine, after separation from carbon dioxide and water, being recycled to the reaction zone. The dialkylureas obtained contain not more than 1% of monoalkylurea and 1% of trialkylurea, and may be used as starting materials for various syntheses.

摘要翻译： 在高温和超大气压下使单烷基胺与CO 2反应制备对称二烷基脲的方法，其中未转化的原料，反应区中形成的水​​和副产物以及烷基氨基甲酸烷基胺在热分解后 分离成单烷基胺，二氧化碳和水，与形成的二烷基脲分离，然后在分离水溶液之前，将一部分未转化的原料加副产物（含或不含水）再循环至反应区，或不再循环至反应区， 含有单烷基胺，CO 2和其它副产物，该溶液用柱中的碱金属氢氧化物溶液处理，单烷基胺在与二氧化碳和水分离后再循环至反应区。 得到的二烷基脲含有不多于1％的单烷基脲和1％的三烷基脲，可用作各种合成的起始原料。

公开(公告)号：US4539309A

公开(公告)日：1985-09-03

申请号：US624096

申请日：1984-06-25

申请人： Ruprecht Meissner ,  Norbert Neth

发明人： Ruprecht Meissner ,  Norbert Neth

IPC分类号： B01J23/22 ,  B01J27/055 ,  C01B17/79 ,  B01J23/04

CPC分类号： C01B17/79 ,  B01J23/22

摘要： Catalysts for the oxidation of sulfur dioxide to sulfur trioxide, consisting of a silica-based carrier and, applied on this, an active substance containing vanadium and alkali metal compounds, are prepared by dissolving vanadium pentoxide in an alkali solution, acidifying the solution with sulfuric acid, mixing the acidified solution with the carrier, molding the mixture and drying and calcining the molding. To obtain mechanically stable catalysts, a dissolved alkali metal silicate and/or silica sol are added to the alkaline solution before acidification, the latter process is carried out at below 35.degree. C. and the solution is then immediately incorporated into the carrier. The resulting moist crumbly material contains from 2 to 6% by weight of V.sub.2 O.sub.5, from 35 to 45% by weight of H.sub.2 O and from 15 to 50% by weight of SiO.sub.2. From 5 to 25% by weight of the total silica content originates from the dissolved alkali metal silicate and/or silica sol.

摘要翻译： 通过将二氧化硫氧化成三氧化硫的催化剂，由二氧化硅基载体组成，并在其上施用含有钒和碱金属化合物的活性物质，通过将五氧化二钒溶解在碱溶液中，用硫酸酸化该溶液来制备 将酸化溶液与载体混合，将混合物成型并干燥并煅烧成型。 为了获得机械稳定的催化剂，在酸化之前，将碱溶性碱金属硅酸盐和/或硅溶胶加入到碱性溶液中，后一过程在低于35℃下进行，然后将溶液立即并入载体中。 所得湿润的脆性材料含有2至6重量％的V 2 O 5，35至45重量％的H 2 O和15至50重量％的SiO 2。 总二氧化硅含量的5至25重量％来源于溶解的碱金属硅酸盐和/或硅溶胶。