Method of regulating the throughput in the electrochemical regeneration
of chromosulfuric acid
    2.
    发明授权
    Method of regulating the throughput in the electrochemical regeneration of chromosulfuric acid 失效
    调节色硫酸电化学再生的通量的方法

    公开(公告)号:US5391266A

    公开(公告)日:1995-02-21

    申请号:US945986

    申请日:1992-11-03

    CPC分类号: C01G37/08

    摘要: In the electrochemical regeneration of chromosulfuric acid, the chromium (III) sulfate solution containing sulfuric acid is fed under pressure into the electrolysis cells. In this way malfunctions in production are reduced. Variations in the amount of electric current available can be absorbed flexibly. The chromosulfuric acid is produced with constant quality.

    摘要翻译: PCT No.PCT / EP91 / 00842 Sec。 371日期:1992年11月3日 102(e)日期1992年11月3日PCT 1991年5月3日PCT公布。 第WO91 / 17117号公报 1991年11月14日。在染料硫酸的电化学再生中,将含硫酸的硫酸铬(III)溶液在压力下进料到电解槽中。 这样就可以减少生产中的故障。 可以灵活地吸收电流量的变化。 染料硫酸以不变的质量生产。

    Production of material consisting of solid hollow spheroids
    4.
    发明授权
    Production of material consisting of solid hollow spheroids 失效
    生产由实心空心球体组成的材料

    公开(公告)号:US4077908A

    公开(公告)日:1978-03-07

    申请号:US720346

    申请日:1976-09-03

    IPC分类号: B01D53/94 B01J35/08 B01J29/06

    摘要: Production of solid, hollow and spheroidic material for use as a carrier supporting motor exhaust gas decontamination catalysts. To this end, spheroidal particles of material being oxidizable and/or low melting and/or soluble in organic solvents are placed on to a pelletizing table. Ceramic pulverulent material is distributed thereover and a aqueous cellulose ether solution is simultaneously sprayed thereonto to cause deposition of the ceramic material on the particles. The resulting pellets are dried at 20.degree. - 95.degree. C and freed from material being oxidizable and/or low melting and/or soluble in organic solvents, and finally calcined at 1000.degree. - 1500.degree. C.

    摘要翻译: 生产固体,空心和球状材料,用作支撑电机排气净化催化剂的载体。 为此,将可氧化和/或低熔点和/或可溶于有机溶剂的材料的球形颗粒置于造粒台上。 陶瓷粉状材料分布在其上,同时将纤维素醚水溶液喷洒在其上,以使陶瓷材料沉积在颗粒上。 所得颗粒在20-95℃下干燥,并且从可氧化和/或低熔点和/或可溶于有机溶剂的材料中除去,最后在1000-1000℃下煅烧。

    Production of phosphine
    5.
    发明授权
    Production of phosphine 失效
    生产磷化氢

    公开(公告)号:US4128620A

    公开(公告)日:1978-12-05

    申请号:US830160

    申请日:1977-09-02

    IPC分类号: C01B25/06 C01B25/37 C01B25/00

    CPC分类号: C01B25/37 C01B25/06

    摘要: Production of phosphine. The phosphine is produced by reducing, in a first step, anhydrous zinc phosphate to zinc phosphide by treatment with carbon at a temperature higher than 1000.degree. C, and, in a second step, reacting the zinc phosphide formed in the first step with phosphoric acid. The resulting gaseous phosphine is collected, and the resulting zinc phosphate, which is obtained as a difficultly soluble precipitate, is dried, dehydrated and recycled to the first step.

    摘要翻译: 生产磷化氢。 通过在高于1000℃的温度下用碳处理将第一步中的无水磷酸锌还原为磷化锌,并且在第二步骤中,使第一步中形成的磷化锌与磷酸 。 收集所得的气态膦,将得到的作为难溶性沉淀物得到的磷酸锌干燥,脱水并再循环至第一步。

    Process for making long-chain ammonium polyphosphate
    6.
    发明授权
    Process for making long-chain ammonium polyphosphate 失效
    制造长链多磷酸铵的方法

    公开(公告)号:US4396586A

    公开(公告)日:1983-08-02

    申请号:US309902

    申请日:1981-10-09

    CPC分类号: C01B25/405

    摘要: The invention relates to a process for making long chain ammonium polyphosphate consisting essentially of crystalline modification II. To this end, a mixture of phosphorus pentoxide and ammonium orthophosphate in a molar ratio of 1:0.9 to 1:1.1 is reacted with 0.1 to 15 mol % of melamine or its condensation products selected from melam, melem or mellon, calculated as melamine, at a temperature within the range 50.degree. to 150.degree. C. in the presence of an excess of ammonia and the reaction product is heat-treated at temperatures within the range 200.degree. to 400.degree. C.

    摘要翻译: 本发明涉及一种制备基本上由结晶改性II组成的长链多磷酸铵的方法。 为此,以摩尔比1:0.9至1:1.1的五氧化二磷和正磷酸铵的混合物与0.1至15mol%的三聚氰胺或其选自蜜胺,蜜胺或梅隆的缩合产物以三聚氰胺计算, 在过量氨的存在下,在50〜150℃的温度范围内,将反应产物在200〜400℃的温度范围内进行热处理。

    Continuous production of pure phosphine
    7.
    发明授权
    Continuous production of pure phosphine 失效
    连续生产纯磷酸盐

    公开(公告)号:US4143121A

    公开(公告)日:1979-03-06

    申请号:US815161

    申请日:1977-07-13

    IPC分类号: C01B25/06 C01B25/00

    CPC分类号: C01B25/06

    摘要: Phosphine is continuously produced by reacting yellow phosphorus with an aqueous alkali metal hydroxide solution in the presence of an alcohol, with the exclusion of oxygen, at 44 to 90.degree. C. To this end, the reaction is effected in two separate reaction stages. In the first reaction stage, the alkali metal hydroxide solution and phosphorus are reacted with agitation in a molar ratio of 0.7:1 to 0.9:1 and the resulting gaseous phosphine is collected. Resulting liquid phase material containing unreacted phosphorus is delivered to the second reaction stage in which the unreacted phosphorus is reacted with further aqueous alkali metal hydroxide solution. The resulting gaseous reaction products are collected separately from the gaseous phosphine collected in the first reaction stage.

    Catalyst for reducing the toxic contaminants of combustion engine
exhaust gas
    8.
    发明授权
    Catalyst for reducing the toxic contaminants of combustion engine exhaust gas 失效
    用于减少内燃机废气的有毒污染物的催化剂

    公开(公告)号:US3985683A

    公开(公告)日:1976-10-12

    申请号:US555879

    申请日:1975-03-06

    申请人: Jurgen Stenzel

    发明人: Jurgen Stenzel

    摘要: Catalyst reducing the toxic contaminants of exhaust gas of combustion engines. The catalyst, which consists essentially of a ceramic honey comb structure as carrier and a mixture of copper, nickel and manganese oxides as catalytically active ingredients, has an intermediary layer of aluminum oxide applied to the honey comb carrier.The catalyst is produced by heating the honey comb carrier to 300.degree. - 400.degree.C; by introducing the hot carrier into a concentrated solution of an aluminum salt of a volatile acid for 15 - 60 minutes; by blowing out the carrier and drying it at room temperature; by heating the dry carrier within 1 to 4 hours to 350.degree. - 450.degree.C and then calcining it for 2 to 6 hours to 500.degree. - 700.degree.C with the resultant formation of an intermediary layer of aluminum oxide on the honey comb carrier; by heating the carrier to 300.degree. - 400.degree.C; by dipping the hot carrier in a hot concentrated aqueous solution of catalytically active copper, nickel and manganese salts of volatile acids and allowing it to remain therein for 15 - 60 minutes; by blowing out the carrier and drying it for 1 - 4 hours at 350.degree. - 450.degree.C; and by calcining it for 5 - 20 hours at 700.degree. - 1000.degree.C.

    摘要翻译: 催化剂减少内燃机废气的有毒污染物。 基本上由作为载体的陶瓷蜂巢结构和作为催化活性成分的铜,镍和锰氧化物的混合物组成的催化剂具有施加到蜂巢载体上的氧化铝的中间层。