| 摘要 |
New catalysts (I) contain: (a) 10-99.9 wt.% of zirconium dioxide and/or titanium dioxide; (b) 0.1-30 wt.% of silicon dioxide; (c) 0-60 wt.% of aluminum oxide; and (d) 0.1-10 wt% of group Ia or IIb element(s), group IIIb element(s), group VIIIb element(s) and/or tin. Independent claims are also included for (1) a process for the dehydrogenation of 2-16C hydrocarbons in presence of (I) and optionally in presence of water vapor; (2) a process for the production of (I) from suitable compounds of Zr and/or Ti and Al and/or Si by dry mixing or atomizing together, then calcining and pelletizing (optionally with the addition of acid); (3) a process for the production of (I) by atomizing or dry mixing suitable compounds of Zr and/or Ti and Si and calcining the mixture, mixing with suitable Al compounds with the addition of acid, pelletizing with the addition of acid, impregnating with a solution containing platinum and tin, drying, calcining at 400-650 degrees C, impregnating with an aqueous solution containing potassium and cesium, drying and calcining again at 400-650 degrees C. |
