Abstract:
Chromium-free catalyst for the low-temperature conversion of carbon monoxide and water into hydrogen and carbon dioxide, which comprises a mixed oxide of at least copper oxide, zinc oxide and aluminium oxide, with the catalyst precursor being present essentially as hydrotalcite and the content of copper oxide being not more than 20% by weight.
Abstract:
The subject matter of the present invention is a method for the production of polytetrahydrofurane or tetrahydrofurane copolymers by means of the polymerization of tetrahydrofurane, in the presence of a telogen and/or a comonomer, on an acidic fixed-bed catalyst, in which the temperature of the polymerization mixture increases in the flow direction of the catalyst bed.
Abstract:
Mercury and/or arsenic or compounds thereof are removed from streams of matter by contacting them with an absorption composition containing silver and aluminium oxide, which absorption composition is characterized in that the aluminium oxide is at least 50% by weight theta-aluminium oxide.
Abstract:
The subject matter of the present invention is a method for the production of polytetrahydrofurane or tetrahydrofurane copolymers by means of the polymerization of tetrahydrofurane, in the presence of a telogen and/or a comonomer, on an acidic fixed-bed catalyst, in which the temperature of the polymerization mixture increases in the flow direction of the catalyst bed.
Abstract:
The invention relates to porous organometallic framework materials containing at least one at least ambident organic compound L which is coordinatively bound to at least one metal ion M and is provided with at least one functional group G that binds non-coordinatively to M and is selected among the group comprising -SO3H, -PO3H2, and the analogues thereof. The invention further relates to method for the production thereof and the use thereof.