Sasol Germany Gmbh

Rwe-dea Aktiengesellschaft Fur Mineraloel Und Chemie

Sasol Performance Chemicals Gmbh

Rwe-dea Aktiengesellschaft Fuer Mineraloel Und Chemie

Andrea Brasch

Klaus Diblitz

Klaus F Noweck

Kai Dolling

Arnold Meyer

Jurgen Schimanski

Kai Dallmann

Ute Freese

Jan Sohiefler

Jan Schiefler

Sohnke Rolfs

Mark M Chavez

Brian Peoples

Allison Hann

David A Barclay

Angela Siegel

Jürgen Schimanski

Tilo Feldbaum

Kai D&ouml;lling

Klaus P G Diblitz

Sönke Rolfs

Yanick Holzmann

Stefan Howe

Kai Dölling

The present invention relates to a calcined shaped alumina and to a method of preparing a calcined shaped alumina. The method comprises that the alumina in the alumina suspension is hydrothermally aged to have a specific crystallite size. This in turn produces a highly stable alumina in the form of a calcined shaped alumina particularly at temperatures of 1200° C. and above.

Stable shaped alumina and method for producing same

Magnesium aluminate spinels are made by hydrothermally aging an aqueous slurry of a spinel precursor which can be (a) a mixture of boehmite alumina and a magnesium precursor, (b) an aluminum magnesium oxide or hydroxide, and (c) mixtures thereof. At least one of the aged slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce the magnesium aluminate spinel.

Process for the synthesis of magnesium aluminate spinels

The present invention relates to a process for preparing TiO/SiOmixed oxides or the hydrates and/or oxide hydrates thereof comprised of 0.5 to 95 wt % SiOand the balance as TiO, each referring to the completely calcined product, by using titanium alcoholates and aqueous silica sol. Moreover, the invention relates to the use of these mixed oxides as catalyst carriers.

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The present invention relates to a process for preparing boehmitic aluminas by hydrolysis of aluminum alcoholates in aqueous, alkaline solution. It further relates to aluminas or alumina hydrates prepared by this process and their uses.

Process for preparing boehmitic aluminas having a high &#x3b1;-conversion temperature

The object of the invention is a method for the manufacture of aluminum trihydrates by hydrolysis of aluminum alcoholates in aqueous, alkaline solution with addition of organic compounds, the so manufactured aluminum trihydrates and their use as catalyst supports.

Method for producing aluminum trihydrates having a high pore volume, aluminum trihydrates produced according to this method and the use thereof

Process for producing a thermostable TiO2/SiO2 mixed oxide and mixed oxide produced therefrom

Process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminum compounds and organosilicon compounds.

Process for the manufacture of dispersible alumino-silicates

There is provided a process for producing high-purity magnesium hydroxide by reaction of magnesium or reactive magnesium compounds with hydroxy compounds yielding magnesium alkoxides, followed by hydrolysis to form magnesium hydroxide, or a process for producing magnesium oxide by calcination of magnesium hydroxide.

Process for the preparation of high-purity magnesium hydroxide and magnesium oxide from magnesium alkoxides

A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolyzing the resultant alcoholate mixture with water. The corresponding metal oxides can be produced by calcination.

Process for producing hydrotalcites and the metal oxides thereof

A process for producing high-purity hydrotalcites by reacting alcohols or alcohol mixtures with at least one or more divalent metal(s) and at least one or more trivalent metal(s) and hydrolysing the resultant alcoholate mixture with water. The corresponding metal oxides can be produced by calcination.

The present invention relates to a process for the manufacture of high-purity alumino-silicates which are dispersible in aqueous and/or aqueous-acidic media by hydrolysis of aluminium compounds and silicic acid compounds and hydrothermal treatment.

Growing community of inventors

Meldorf, Germany

Andrea Brasch