Abstract: The invention relates to a method for producing CO2 for attracting bloodsucking arthropods (2). In this method, at least one liquid or solid organic substance (11) is reacted in an oxidation process in a targeted manner, one portion completely and another partially, thus forming, in addition to CO2, H2O and heat, at least one further partial oxidation product (P). The invention further relates to a device (1a, 1b) for generating CO2, said device (1a, 1b) comprising a storage means (10) for at least one liquid or solid organic substance (11) and an evaporation module (14) for the liquid or solid organic substance (11). The device (1a, 1b) comprises a reactor module (16) for the controlled oxidation and partial oxidation of the at least one liquid or solid organic substance (11); a control unit (80); and means (13, 18, 21, 22, 26) for regulating the oxidation and partial oxidation process.

Abstract: The invention relates to a selective catalyst for aromatising hydrocarbons with at least 7 carbon atoms in the chain and to a method of manufacturing the catalyst. The catalyst is characterized by a porous oxide or mixture of oxides of one or more of the elements Ti, Zr and Hf containing in addition, at least at the surface, elements of sub-group V, VI and VII elements in oxidised form in quantities of 0.01 to 10 wt % of the total catalyst weight. The catalyst has a specific surface area of between 30 and 200 m2/g and can repeatedly absorb and release hydrogen in the temperature range 400-700 ° C. It has no strongly acidic or strongly basic centers and can in addition contain compounds of group II or sub-group III elements including the lanthanides, as well as compounds of silicon and aluminium and mixtures thereof.