Basf Aktiengesellschaft

Joachim Stabenow

Laszlo Marosi

Matthias Schwarzmann

Werner Steck

Rolf Platz

Matthias Irgang

Franz J Broecker

Gerd Wunsch

Paul Deigner

Werner Loeser

Franz-Josef Mueller

Karl Gerhard Baur

Hans-Ulrich Schlimper

Knut Eger

Guenter Zirker

Amorphous metal/magnesium silicates of the general formula

Preparation of amorphous metal/magnesium silicates

A process for the manufacture of a nitrogen-containing crystalline metal silicate having a zeolite structure from silicon dioxide and a metal oxide and/or metal hydroxide, wherein the crystallization is carried out in the absence of an alkali metal in an aqueous solution of hexamethylenediamine, preferably under the autogeneous pressure of the solution at from 100.degree. to 200.degree. C. The zeolites are preferably used as catalysts for the reaction of methanol and/or dimethyl ether to give unsaturated hydrocarbons, the oligomerization of olefins, the alkylation of aromatics, and other conversions of hydrocarbons.

Manufacture of nitrogen-containing crystalline metal silicates having a

A process for the preparation of zeolites of the ZSM-5 structural type from a mixture of SiO.sub.2 and Al(OH).sub.3 by hydrothermal crystallization in an aqueous amine solution, in the absence of alkali, at from 100.degree. to 200.degree. C., wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formulated to have an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H.sub.2 O/amine and amine/Al.sub.2 O.sub.3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics

Preparation of zeolites

Crystalline isotactic zeolites having the composition

Crystalline isotactic zeolites and their preparation

A crystalline SiO.sub.2 --modification, which is characterized by an X-ray diffraction diagram having certain diffraction lines, and a process for the preparation of this crystalline SiO.sub.2 --modification by crystallizing reactive amorphous SiO.sub.2 under hydrothermal conditions in the presence of hexamethylenediamine. Sodium ions, phosphate ions and/or sulfate ions may be added for the crystallization.

Method for preparing crystalline SiO.sub.2 modification

A process for the preparation of 2-methyl-pentane-2,4-diol by hydrogenating diacetone-alcohol at an elevated temperature in the presence of a catalyst which has been obtained by calcining the compound of the formula Ni.sub.6 Al.sub.2 (OH).sub.16 CO.sub.3 . 4H.sub.2 O.

Preparation of 2-methyl-pentane-2,4-diol

Alkali metal beryllo-alumino-silicates of the mordenite type form, under hydrothermal conditions (100.degree.-300.degree. C in a Carius tube), from aqueous mixtures containing the structural components SiO.sub.2, Al.sub.2 O.sub.3 and BeO and alkali metal hydroxides. In beryllium-containing mordenites, ratios of SiO.sub.2 to Al.sub.2 O.sub.3 of from 10:1 to 120:1 may be achieved, whereas values of only up to 10:1 are known in the pure alumino-silicates of this type. The alkali metal beryllo-alumino-silicates are accessible to ion exchange in the same way as the beryllium-free representatives. The so-called NH.sub.4 - and H-forms obtaineable by ion exchange may be used for the synthesis of highly active sorption compositions or catalysts after calcination.

Crystalline beryllo-alumino-silicates and process for their manufacture

A process for metallizing substrates by activation of the substrate by deposition of palladium from a palladium complex, followed by electroless metallization. The palladium is deposited on the substrate by dipping the substrate into a solution of a palladium(O) complex and decomposing this complex at from 100.degree. to 300.degree. C. With this method it is possible to effectively activate substrates which are attacked by acid or alkali or swollen by organic solvents.

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Weinheim, Germany

Joachim Stabenow