Kali-chemie Aktiengesellschaft

Solvay (societe Anonyme)

Solvay & Cie (societe Anonyme)

Robert Walter

Michel Strebelle

Helmut Derleth

Torsten Schmidt

Gunter Weidenbach

Bernd Hupe

Heinz Meier Zu Koecker

The invention relates to a process for the oxychlorination of ethylene by means of a catalyst composition comprising an alumina support impregnated with cupric chloride, magnesium chloride and a chloride of an alkali metal chosen from sodium and lithium. The oxychlorination performed in this manner makes it possible to obtain an excellent yield without the reactor being corroded by the catalyst composition employed.

Process for the oxychlorination of ethylene and catalyst compositions

A process for adjusting at least one of the structural and surface characteristics of an oxide material, e.g. SiO.sub.2 or Al.sub.2 O.sub.3, by dehydration of a water-containing oxide gel under supercritical conditions by extracting the water with an extraction agent such as CO.sub.2 at a pressure above the critical pressure of the extraction agent.

Process for adjusting the structural and/or surface character of oxides

A process and apparatus for removing nitrogen oxides (NO.sub.x) from an exhaust gas by catalytic reduction in the presence of added ammonia in which at temperatures of up to 300.degree. C. the exhaust gas is mixed with the ammonia in such a way that their residence time together before contacting the catalyst is at most one second.

Process for catalytic treatment of exhaust gases

Disclosed is a process for the treatment of exhaust gas comprising a heating step using an external energy source which partially oxidizes the exhaust gas and a subsequent catalytic treating step.

Growing community of inventors

Langenhagen, Germany

Robert Walter