Basf Aktiengesellschaft

Basf Se Corporation

Thomas Beuermann

Joaquim Henrique Teles

Ekkehard Schwab

Hartwig Voss

Ulrich Penzel

Dominic Vanoppen

Georg Krug

Steffen Oehlenschläger

Steffen Oehlenschlaeger

Benno Sens

Alfred Rennig

Konrad Morgenschweis

Matthias R&auml;dle

Dietrich Tittelbach-Helmrich

Camiel Heffels

J&uuml;rgen Ettm&uuml;ller

Frederik Van Laar

The invention relates to a process for preparing aromatic amines by hydrogenation of nitroaromatics in the presence of catalysts, in which a fluid reaction mixture which comprises amines and from which the catalysts are separated off is formed in a reactor. After the catalysts have been separated off, a measurement of the absorption of UV/VIS radiation by the reaction mixture is carried out to determine the concentration of nitro and nitroso compounds in the reaction mixture.

Method for producing aromatic amines or aliphatic amino alcohols

A process for the on-line determination of the hydrogen peroxide content of a mixture obtained in a chemical reaction comprises at least the following steps:

Method for the online determination of hydrogen peroxide

The disclosure is a probelike apparatus ( ) for spectroscopic analysis of a fluid medium ( ) by attenuated reflection. Two light beams from a light source ( ) impinge upon the boundary ( ) between a prism ( ) and the medium ( ) to be analyzed and the intensities of the light beams reflected at the boundary are measured in a detector unit ( ). The two light beams differ in their angle of incidence on the boundary and/or in their polarization state. Measurement is preferably carried out under total reflection.

Apparatus for spectroscopic analysis of a fluid medium by attenuated reflection

Growing community of inventors

Mannheim, Germany

Thomas Beuermann