摘要:
Novel nickel and/or cobalt plated sponge based catalysts are disclosed. The catalyst have an activity and/or selectivity comparable to conventional nickel and/or cobalt sponge catalysts, e.g., Raney nickel or Raney cobalt catalysts, but require a reduced content of nickel and/or cobalt. Catalysts in accordance with the invention comprise nickel and/or cobalt coated on at least a portion of the surface of a sponge support. Preferably, the sponge support comprises at least one metal other than or different from the metal(s) contained in the coating. The method of preparing the plated catalysts, and the method of using the catalysts in the preparation of organic compounds are also disclosed.
摘要:
This invention describes improvements upon a process for the production of 1,3-propanediol (PDO) wherein an aqueous solution of 3-hydroxypropanal (HPA) is formed and the HPA is subjected to hydrogenation to produce a crude PDO mixture. One improvement on this process comprises treating the crude PDO mixture with an acidic zeolite, an acid form cation exchange resin, or a soluble acid to convert the MW176 cyclic acetal to more volatile materials which can be easily separated from PDO by distillation. Another improvement involves removing water from the crude 1,3-propanediol mixture, contacting the resulting mixture with a solid acid purifier at a temperature of from about 50 to about 250 °C to convert the MW 132 cyclic acetal to more volatile cyclic acetals, and separating the more volatile cyclic acetals from the 1,3-propanediol by distillation or gas stripping.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines C 13 -Alkoholgemisches, das insbesondere als Vorstufe für die Herstellung von Verbindungen mit tensidischen Eigenschaften und Weichmachern geeignet ist.
摘要:
According to the present invention there is provided a process of increasing the carbon chain length of an olefinic compound comprising the steps of providing a starting olefinic compound and subjecting it to hydroformylation to produce an aldehyde and/or alcohol with an increased carbon chain length compared to the starting olefinic compound. Optionally the aldehyde that may form during the hydroformylation reaction is hydrogenated to convert it to an alcohol which has an increased carbon chain length compared to the starting olefinic compound. The alcohol with the increased carbon chain length is subjected to dehydration to produce an olefinic compound with an increased carbon chain length compared to the starting olefinic compound. The invention also relates to olefinic compounds produced by the process.
摘要:
Disclosed are heterogeneous processes (i) for the hydrogenation of a compound containing at least one unsaturated carbon-carbon bond, and (ii) for the hydro-dehalogenation of a compound containing at least one C-Cl, C-Br or C-l bond. The processes comprise reacting said compound with a hydrogenating agent and a heterogeneous hydrogenation catalyst in the presence of an ionic liquid.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Hydrierung mindestens einer organischen Verbindung durch Inkontaktbringen der mindestens einen organischen Verbindung mit einem Wasserstoff enthaltenden Gas in Gegenwart eines Katalysators, der als Aktiv- metall Ruthenium alleine oder zusammen mit mindestens einem weiteren Metall der I., VII. oder VIII. Nebengruppe des Periodensystems, aufgebracht auf ein Trägermaterial auf Basis von amorphem Siliziumdioxid, umfasst und der erhältlich ist durch: i) ein oder mehrfaches Behandeln eines Trägermaterials auf Basis von amorphem Siliziumdioxid mit einer halogenfreien wässrigen Lösung einer niedermolekularen Rutheniumverbindung und anschliessendes Trocknen des behandelten Trägermaterials bei einer Temperatur unterhalb 200 °C, ii) Reduktion des in i) erhaltenen Feststoffs mit Wasserstoff bei einer Temperatur im Bereich von 100 bis 350 °C, wobei man Schritt ii) unmittelbar im Anschluss an Schritt i) durchführt.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von hochreinem Diisobuten durch Umsetzung von Isobuten oder Isobuten-haltigen Kohlenwasserstoffgemischen an einem festen sauren Ionenaustauscherharz, wobei das saure Ionenaustauscherharz Sulfonsäuregruppen enthält, deren Protonen teilweise gegen Metallionen ausgetauscht wurden und die Verwendung des Diisobutens.
摘要:
The invention relates to a method for producing blends of phthalic acid diesters, decanols and tridecanols, according to which phthalic acid or a reactive derivative thereof is reacted with a mixture of at least one decanol and at least one tridecanol. The invention also relates to blends obtained as above, to their use as plasticizers for moulding compounds and to mixtures of isomeric tridecanols that are suitable for producing said blends.
摘要:
Production of unsaturated ketones by the aldol condensation of ketones such as acetone or methyl ethyl ketone by contacting the ketone in the vapour phase with a particulate catalyst comprising at least one basic alkali metal compound supported on an inert substrate at a temperature above 175 DEG C. The product ketones may be hydrogenated to form saturated ketones or alcohols.