本文選題：工業(yè)廢氣處理 + 摻雜��； 參考：《材料導(dǎo)報(bào)》2017年14期

【摘要】：利用Ce和錳鹽復(fù)配對(duì)單組分錳鹽活性組分進(jìn)行摻雜改性,并采用分步共混法制備一系列催化劑。催化劑活性測(cè)試顯示錳鹽復(fù)配及Ce的摻雜均能提高錳基催化劑低溫活性,且錳鹽復(fù)配形式的摻雜對(duì)催化劑低溫活性提高更多。通過對(duì)比各催化劑強(qiáng)度狀況發(fā)現(xiàn)活性組分的摻雜使催化劑的機(jī)械強(qiáng)度得到很大提高,而BET結(jié)果顯示摻雜改性后的錳基催化劑其表面織構(gòu)得到較大改善。催化劑的XRD結(jié)果表明500℃焙燒的錳基催化劑活性組分均以無(wú)定形態(tài)存在。通過對(duì)改性后的催化劑進(jìn)行NH3-TPD和H2-TPR分析,發(fā)現(xiàn)相比于Ce對(duì)單組分錳鹽的摻雜改性,錳鹽復(fù)配形式的摻雜改性對(duì)催化劑表面酸量和氧化還原性能的提高更加顯著。
[Abstract]:A series of catalysts were prepared by adding ce and manganese salt to modify the active components of single component manganese salt and to prepare a series of catalysts by means of step by step blending method. The results of activity test showed that the low temperature activity of mn based catalyst was improved by mn salt and ce doping, and the low temperature activity of mn 2 + was increased by doping mn 2 +. By comparing the strength of the catalysts, it was found that the mechanical strength of the catalysts was greatly improved by doping the active components, while the surface texture of the modified Mn-based catalysts was greatly improved by BET. XRD results showed that the active components of manganese based catalysts calcined at 500 鈩，

本文編號(hào)：2002125