| abstract |
An alkane dehydrogenation reaction enhancing additive contains 15 m-18 m% of CaO and 70 m-80 m% of Al 2 O 3 6m to 15m percent of CuO, and 0.01m to 3m percent of oxides of elements selected from VIII group, VI group, IA group, IIA group and rare earth group or a mixture thereof; in CaAl 4 O 7 Spinel and Al 2 O 3 The composite carrier is provided with CuO and CuO & CuSO 4 Two active phases, wherein X-ray diffraction data of the auxiliary agent at least contain diffraction peaks shown in the table A; the specific surface area is 6 to 50 square meters per gram, the porosity is 0.1 to 0.25 ml/g, and the bulk density is 0.9 to 1.2 g/ml. The catalyst is applied to the alkane dehydrogenation process, can well perform heat and reaction coupling, enables the temperature of a bed layer to be more uniform, has lower severity, enables the catalyst to exert better activity, and improves the carbon deposit resistance, the single-stage operation period and the service life. |