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    • 21. 发明授权
    • Hydrogenation catalyst, a process for its preparation, and use thereof
    • 氢化催化剂,其制备方法及其用途
    • US5498587A
    • 1996-03-12
    • US217151
    • 1994-03-24
    • Gregor DeckersGerhard DiekhausBernd DorschCarl D. FrohningGerhardt HornHorst B. Horrig
    • Gregor DeckersGerhard DiekhausBernd DorschCarl D. FrohningGerhardt HornHorst B. Horrig
    • B01J21/16B01J23/755B01J23/78B01J32/00B01J35/10B01J37/18C07B61/00C07C29/141C07C31/10C07C31/12C09K3/00B01J21/10B01J23/04
    • B01J35/10B01J23/755B01J23/78C07C29/141C07C31/10C07C31/12B01J35/0053B01J35/1014B01J35/1019B01J35/1038B01J35/1042B01J35/108
    • A hydrogenation catalyst comprising 25 to 50% by weight of nickel (metallic) 10 to 35% by weight of nickel oxide 4 to 12% by weight of magnesium oxide 1 to 5% by weight of sodium oxide the remainder being a water-insoluble support material,wherein the total of nickel and nickel oxide is 40% to 70% by weight, and the catalyst has a surface area, determined by BET, of 80 to 200 m.sup.2 /g and a total pore volume of 0.35 to 0.6 ml/g. The total pore volume is made up of 30% to 60% by volume from pores having pore radii of .ltoreq.40 .ANG., 4% to 10% by volume from pores having pore radii of >40 to 300 .ANG., and 30% to 60% by volume from pores having pore radii of >300 to 5000 .ANG..A process for preparing the hydrogenation catalyst which comprises preparing, in a precipitation step, a green catalyst from a nickel salt, a magnesium salt, sodium carbonate, and the support material, separating off the mother liquor and partially washing the precipitate, slurrying the green catalyst in alkali solution, separating it from the liquid phase, drying it, and contacting the dried green catalyst with hydrogen until 48% to 86% by weight of the total nickel content is present in metallic form.The hydrogenation catalyst of the invention is particularly suitable for the hydrogenation of propanal, n-butanal, and i-butanal, especially at temperatures between 100.degree. and 160.degree. C.
    • 一种氢化催化剂,其包含25-50%重量的镍(金属),10-35%(重量)的氧化镍,4至12%(重量)的氧化镁,1至5%(重量)的氧化钠,其余为不溶于水的载体 材料,其中镍和氧化镍的总量为40重量%至70重量%,并且催化剂具有由BET测定的表面积为80至200m 2 / g,总孔体积为0.35至0.6ml / g 。 总孔体积由孔径为40μm〜40μm的孔径为4〜10体积%的孔径为30〜60体积%,孔径为40〜300埃的孔径为30〜 60%体积的孔径为> 300至5000的孔。 一种制备氢化催化剂的方法,包括在沉淀步骤中,从镍盐,镁盐,碳酸钠和载体材料中制备绿色催化剂,分离母液并部分洗涤沉淀物,将绿色 碱性溶液中的催化剂,将其与液相分离,干燥,并将干燥的生坯催化剂与氢气接触,直到总镍含量的48重量%至86重量%以金属形式存在。 本发明的氢化催化剂特别适用于丙醛,正丁醛和异丁醛的加氢,特别是在100至160℃的温度下。
    • 27. 发明授权
    • Aquathermolytic cleavage of ethers
    • 醚水解裂解
    • US5043486A
    • 1991-08-27
    • US572485
    • 1990-08-23
    • Michael SiskinGlen B. BronsRamzi Y. SalehStephen N. Vaughn
    • Michael SiskinGlen B. BronsRamzi Y. SalehStephen N. Vaughn
    • C07C29/10C07C31/02C07C31/10C07C31/12
    • C07C29/10
    • The present invention provides for a simplified process for converting ethers into their corresponding alcohols comprising forming an aqueous mixture of the ether and at least about 50% by weight water and heating the mixture under autogeneous pressure at a temperature of from about 250.degree. to 450.degree. C., more preferably from about 250.degree. C. up to the critical temperature of water which is about 374.degree. C. Heating is continued for a period of time sufficient to convert at least about 20% by weight of the ether, usually from about 5 up to about 120 minutes, depending on temperature and the amount of water present, and the identity of the starting ether feedstock.The process may be characterized as an aquathermolysis reaction wherein the reaction proceeds in water primarily through ionic routes rather than through free radical routes. Accordingly, relatively high conversion rates and good yields of alcohol and other reaction by-products may be obtained without the necessity of using a catalyst in the process.
    • 本发明提供了将醚转化成其相应的醇的简化方法,包括形成醚的水性混合物和至少约50重量%的水,并在约250-450℃的温度下在自主压力下加热混合物 更优选约250℃至约374℃的水的临界温度。继续加热足够的时间以使至少约20重量%的乙醚转化成通常为约 5至约120分钟,这取决于温度和存在的水的量以及起始醚原料的特性。 该方法可以表征为水解溶解反应,其中反应在水中主要通过离子路线而不是通过自由基途径进行。 因此,可以获得醇和其它反应副产物的相对高的转化率和良好的产率,而不需要在该方法中使用催化剂。