担载型无铬铁系水汽转化催化剂的研究

STUDY ON THE SUPPORTED IRON CATALYST WITHOUT CHROMIUM FOR WATERGAS SHIFT REACTION

以工业堇青石和γ－Ａｌ２Ｏ３作载体，用浸渍法制取了无铬铁系变换催化剂．实验发现，这类催化剂的变换活性与载体性质、活性组份负载量和焙烧温度有关．经５５０℃焙烧，堇青石载体负载量在１０％～１５％（ｗｔ），γ－Ａｌ２Ｏ３载体负载量１５％～２０％的情况下担载型催化剂具有最佳变换活性．研究结果也表明：堇青石作载体的催化剂，催化活性不仅好于γ－Ａｌ２Ｏ３样品。

The supported iron watergas shift catalysts without chromium have been prepared by impregnatimg method over cordierite and γAl2O3.It has been shown that the activity of supported catalyst is influenced by the supporter characters.There is the optimal activity in range of 10%～15%(wt)for cordierite samples and 15%～20%(wt)for γAl2O3 samples at 550 ℃ calcination temperature. The results showed that the shift activity of the supported catalyst over cordierite is higher than that of catalyst over γAl2O3 and industrial catalyst B107.