Abstract: The invention relates to a catalyst system and process for preparing dimethyl ether from synthesis gas as well as the use of the catalyst system in this process.

Abstract: The invention relates to a catalyst and catalyst layer and process for preparing dimethyl ether from synthesis gas or methanol as well as the use of the catalyst or catalyst layer in this process.

Abstract: The invention relates to a catalyst and catalyst layer and process for preparing dimethyl ether from synthesis gas or methanol as well as the use of the catalyst or catalyst layer in this process.

Abstract: The invention relates to a catalyst system and process for preparing dimethyl ether from synthesis gas as well as the use of the catalyst system in this process.

Abstract: A line connector for a urea-water solution in an SCR catalytic converter system. The line connector has two mutually separate flow paths for two fluid media, one for a functional medium and another for a temperature control medium for controlling the temperature of the functional medium. The line connector includes a connector body having a first connection for a first line conducting a functional medium, a second connection conducting a temperature control medium, and a third connection for a double line having an inner line and a coaxial outer line. The third connection has an inner connecting element with an inner passage and an outer connecting element with an outer passage. The connector body is formed in its interior such that the first and second connections merge separately from one another into the inner and outer passages, respectively, of the third connection.

Abstract: The present invention relates to a line connector (1) having two mutually separate flow paths for two fluid media, specifically one for a functional medium, in particular for a urea-water solution in an SCR catalytic converter system of a motor vehicle, and another for a temperature control medium for controlling the temperature of the functional medium. The line connector (1) is composed of a connector body (2) having at least three line connections, specifically at least a first connection (4) for a first line which conducts the functional medium, a second connection (6) for a second line which conducts the temperature control medium, and a third connection (8), which is designed as a double connection, for a double line (10) which is composed of an inner line (12) and an outer line (14) substantially coaxially surrounding said inner line (12). The third connection (8) has an inner connecting element (16) with an inner passage (24) and an outer connecting element (18) with an outer passage (26).