The kinetics of the reaction between CO and O2 over bimetallic Pt-Rh/Al2O3 catalysts was studied with a differential fixed bed flow reactor running under reducing conditions (CO/O2>5). Temperature, CO and O2 partial pressures were in the range 25–500°C, 5×10−3 to 9×10−3 and...
This gave a new c(6 × 2)-O overlayer structure in LEED and a new, lower-temperature thermal desorption peak of O2 at 565 K. The reaction of CO gas with this state proceeded with a reaction probability of about 0.05 at room temperature to produce CO2gas, until the coverage reached θ...
鉴于此,中国科学技术大学刘庆华,中南大学潘军等人在Nature Communications发表了一篇题为“In situ modulating coordination fields of single-atom cobalt catalyst for enhanced oxygen reduction reaction”的文章。本文作者制备了配位结构调节的Co单原子催化剂,其中Cl-Co-N4基团可以破坏对称的电子分布。原位表征揭示了Cl...
θpt=1-θh-θo-θco方程17 至于反应的动态,通过基于shah等人发表的文献“atransientpemfcmodelwithcopoisoningandmitigationbyo2bleedingandru-containingcatalyst”,j.powersources,vol.166,pp.1-21,2007,假设对于h2和o2而言不关联的吸附和解吸,不关联的吸附和解吸是基于朗缪尔等温线的: qh,ads=kh,adsch,eθpt2...
该工作不仅为低温催化燃烧CO催化剂的设计和开发提供了理论依据,也为CO燃烧反应的动力学模型提供了数据支持。 文献信息 Qin Chunlan et.al Theoretical study on the reaction kinetics of CO oxidation by nitrogen-doped graphene catalysts with different ligand structures Molecular Catalysis 2023....
水煤气变换反应(WGS: water-gas shift reaction)，即CO + H2O= CO2+ H2。.该反应可在有水蒸气的气氛下氧化co,对于纯化H2,消除PEMFC中毒害Pt电极的少量CO方面具有十分重要的作用,因此WGS反应成为许多研究者的课题。当前用于该反应的工业催化剂一般为Cu/ZnO/Al2O3,具有较好的稳定性，但在低温水煤气变换反应中...
The reaction orders in CO and NO pressures, vastly different from Pd and Rh, are also a consequence of the low-binding energies of CO and NO on the alloy surface. It is also found that low-pressure NO promotes the CO + O 2 reaction via gas-phase NO 2 formation; the latter ...
Figure 4. (a) The water adsorption models and binding energy of CoP (left) andOH--CoP (right). Calculated free energy diagram of the (b) HER and (c)CO2RR on CoP and OH−-CoP. (d) Calculated thermodynamic reaction potential of the HER andCO2RR on CoP andOH--CoP. ...
The structures and the stability (i.e., the inertness in a sense) of the co-adsorbed O2 and CO on Au2 may have relevance to the elementary reaction steps on real gold catalysts.doi:10.1002/chem.201504384HaoTianjinMedicalLiuUnivProf.
该工作不仅为低温催化燃烧CO催化剂的设计和开发提供了理论依据,也为CO燃烧反应的动力学模型提供了数据支持。 文献信息 Qin Chunlan et.al Theoretical study on the reaction kinetics of CO oxidation by nitrogen-doped graphene catalysts with different ligand structures Molecular Catalysis 2023....