Euniformly oxygen vacancyin the c-1-RuST samplecould be explained by the
Euniformly oxygen vacancyin the c-1-RuST samplecould be explained by the truth that the sites and absorb more environmental size of therefore improving the had a stronger interaction c-0.1-RuST sample had the smallest oxygen, Ru clusters, which oxidation-reduction overall performance in the catalyst. At the same time, comparing the samples on the c-1-RuST, together with the help, but the Ru content on the c-1-RuST sample was much higher than that the c-0.5-RuST and also the c-0.1-RuST, it could possibly be seen that using the enhance in RuOx speciesof the c-0.1-RuST sample. So as to additional explore the redox performance of the catalysts, we performed H2TPR characterization on the samples, and the benefits are shown in Figure 7. Observing the image, we could come across that the 4 samples all had a reduction peak at 250 to 400 and this can be attributed to the reduction of Sn4+ [20]. The reduction peak from 450 toCatalysts 2021, 11,indicating that the c-1-RuST sample had additional surface oxygen, which was consistent with the results of CO2 selectivity and XPS information of O 1 s. This showed that the smaller and more uniformly distributed RuOx within the c-1-RuST sample could form much more oxidation active sites and absorb a lot more environmental oxygen, thus improving the oxidation-reduction 11 of 14 overall performance on the catalyst. At the same time, comparing the samples from the c-1-RuST, the c-0.5-RuST plus the c-0.1-RuST, it may be seen that with all the raise in RuOx species Etiocholanolone medchemexpress loading, the oxygen content around the catalyst surface gradually enhanced, displaying that the loading, the oxygen content on the catalyst total amount of oxygen increased with thesurface graduallyxincreased,that is also coincide improve in RuO loading, displaying that the total amount of oxygen improved together with the enhance in RuOx loading, which can be also for the CO2 selectivity outcomes of each and every sample. It was tricky to observe clear RuO coincide to the CO2 selectivity benefits of each and every sample. It was complicated to observe obvious species reduction peaks within the image, since the content MCC950 Purity & Documentation material ofof RuOspecies within the samples RuOx species reduction peaks in the image, because the content RuOx x species within the was toowas as well low,the reduction peak ofof Ruspecies was close to to the reduction peak o samples low, and and the reduction peak Ru species was close the reduction peak surface oxygen. of surface oxygen..Figure 7. H -TPR profiles from the catalysts. The reduction peak positions of Sn4+ and oxygen species2 Figure 7. H2-TPR profiles with the catalysts. The reduction peak positions of Sn4+ and oxygen species on the catalyst surface are also marked in the figure. on the catalyst surface are also marked within the figure.As a way to verify the impact of optimization of Ru precursor on the utilization efficiency In web pages and confirm the effect of optimization of Ru we calculated the utilization of active order to the all round catalytic overall performance in the catalyst,precursor around the TOF efficiency ofc-1-RuST sample and all round catalytic performance in the catalyst, weare values from the active web pages as well as the the o-1-RuST sample at 23080 C, plus the benefits calculated shown within the Figure 8. The experimental WHSV the maintained at 112,500 mL -1 , the TOF values in the c-1-RuST sample and was o-1-RuST sample at 23080 -1 , and the and also the are shown inside the Figure 8. The experimental 20 , to ensure that maintained at outcomes DCM conversion price was controlled to become less thanWHSV was the reaction rate 112,500 was g-1 ffected by diffusion, and only depended on th.