Steady-state rates of decomposition and oxidation of methylamine on polycrystalline platinum between 600 and 1500 K have been studied in a mixed reactor with methylamine and oxygen partial pressures from 0.2 to 6 Torr. HCN and H 2 are the dominant products (>98%) in excess methylamine. In ...
Selective oxidation of methylamine over zirconia supported Pt-Ru, Pt and Ru catalysts钌催化剂 氧化锆 选择性氧化 甲胺 负载 双金属催化剂 ZrO2 氧化试验Aiying SongState Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou ...
Aerobic methane oxidation plays a significant role in controlling methane emission from the ocean to the atmosphere. However, due to scarce MOx rate measurements, quantitative estimates of this process on a global scale are unconstrained. Therefore, we extrapolated global MOx rates using RRF machine-l...
In a state of high activity the mass transfer limitation (MTL) regime is realized. The transition to such a regime, as well as exit from it, can be carried out by varying the temperature and concentration of the reactant. Accordingly, the system passes through ignition and extinction, which...
Promotion of the dispersion of Ru species supported on TiO2 was achieved by introduction of Pt component and the role of Pt in enhancing the catalytic performances of Pt–Ru was investigated with catalytic wet air oxidation of methylamine used as a probing reaction. It was found that Pt–Ru/...
We have carried out QM/MM molecular dynamics simulations and variational transition state theory calculations with small-curvature tunneling corrections. The results provide detailed insight into the processes involved in the reaction. Transfer to the O2 oxygen of the catalytic base, Asp128β, is ...
It has been demonstrated that CO and not CO2is the necessary molecule in the synthesis of amino acids. Indeed, when mixtures of CO, CO2, N2, and H2O are irradiated, the yield of amino acids is clearly connected to the partial pressure of CO (Kobayashi et al.1990). Many attempts had be...
This means that the amount of 2 in solution had decreased. It is worth noting that the amount of molecular catalyst also gradually decreased as the pH increased. a State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ...
The enhancement of Pt–Ru catalytic activity for catalytic wet air oxidation (CWAO) of methylamine (MA) was achieved by addition of Pt to Ru catalyst. Pt addition improved the catalytic activity of the bimetallic catalyst due to tuning the Ru surface chemical state and the dispersion of active...
The nickel-containing enzyme is composed of three different subunits in an α2β2γ2 arrangement forming two active sites. The 300 kDa heterohexamer contains two moles of a nickel porphinoid, designated F430, as the prosthetic group, which has to be in the Ni(I) oxidation state for the ...