Send the emperor to send Xin? The amount of active component Pd can be calculated by stirring, but how to calculate the dispersion? Zyhou (contact ta in the station) is more difficult! Personally feel that this method can only be used as a reference! The specific dispersion is still subject to XRD and TEM! Specifically, I did a little! You can use pulse method or static adsorption method! But my test results are on the high side, that is, the dispersion measured by CO adsorption method is greater than that measured by XRD and TEM! But there are several problems: Fourth, there is reversible adsorption of CO on Pt. Even if you are saturated with continuous pulse adsorption, if you purge for a period of time, you will find that there will still be adsorption. These are some experiences of personal experiments! The conclusion can be used as a preliminary judgment, and the specific value needs other means! Does the chemical adsorption of jxezmbc (in-station contact TA)CO need to be calculated? I do it occasionally, but I haven't got the result yet ... Pay attention to apollo55555 (contact TA in the station). Thank you for your help. I looked up some information yesterday. It is said that because it is chemical adsorption, that is, monolayer adsorption, it can be approximately regarded as 1 mol LPd corresponding adsorption 1molCO, so that the amount of Pd distributed on the surface can be converted according to the adsorption amount of CO, and then used. I don't know if there is any problem in my estimation of metal dispersion on the surface of Pd-Pb/Al2O3, especially in writing an article recently. I hope the seniors can give me some advice. Thank you very much:) Streamlet (contact TA in the station) Original zy Hou 2009-6- 19 20: 07 Release: It's more difficult! Personally feel that this method can only be used as a reference! The specific dispersion is still subject to XRD and TEM! Specifically, I did a little! You can use pulse method or static adsorption method! But my test results are on the high side, that is, the dispersion measured by CO adsorption method is more comprehensive than that measured by XRD and TEM ... you are right, but you don't need to calculate this result. You just need to input your load before you do it, and it will spread the results directly to you. It is difficult to disperse by chemical adsorption, and the results obtained after several times are all high! In addition, the catalyst is not completely reduced, and the degree of reduction must be calculated by TPR. Headache (contact ta in the station) also has such questions. Confused, very confused. Is there a widely accepted calculation method in the literature? Otherwise, chemical 04 1 (TA in the contact station) can only be discussed relatively. It seems that Mike's physical adsorption instrument can measure metal dispersion, as long as there are accessories! Chemistry 04 1 (conTAct station ta) by the way, Mike's seems to be made by static method! Isn't wfuture8880 (in-station contact TA) directly distributed after it is completed?