担载型镍催化剂上CH_4/CO_2重整反应的研究Ⅰ.CaO-Fe_2O_3双金属氧化物助剂的研究

Reforming of Methane with Carbon Dioxide tO Syngas over Supported Nickel CatalystsⅠ. Studies of Promoter CaO-Fe_2O_3

采用固定床流动反应装置及ＴＰＲ等技术考察了ＣａＯ、Ｆｅ２Ｏ３及ＣａＯ－Ｆｅ２Ｏ３等氧化物助剂对Ｎｉ／Ａｌ２Ｏ３催化剂的ＣＨ４／ＣＯ２重整反应制合成气的催化活性和抗积炭性能的影响，结果表明，含ＣａＯ－Ｆｅ２Ｏ３助剂的催化剂能最有效地抑制积炭，同时考察了反应温度。

The activity and resistance to carbon deposition of r-Al2O3 supported nickel catalystspromoted by CaO, Fe2O3, and CaO-Fe2O3 for the reaction between CH4 and CO2 were investigatedby fixed-bed flow reactor as well as TPR techniques. Contents of carbon deposited on catalysts weremeasured by gas chromatography. All catalysts exhibited high activity, but the differences in the resistance to carbon deposition were very large with individual promoters. Among these catalysts,those promoted by CaO-Fe2O3 was the most effective in the suppression of carbon deposition. TheTPR results showed that the special type of metal-supporter interaction provided by CaO-Fe2O3promoted catalyst was different from that of single promoted or unpromoted catalysts.