6. For the irreversible gas-phase reaction: A 2B the following correlation was determined from laboratory data (the initial concentration of A is 0.2 g mol/L): 10° = 3.0 - mol For X 50.5: 10 For X > 0.5: -= 3.0+10(X -0.5) -1...
Ruthenium dioxide exhibits good activity for the oxygen evolution reaction in acidic conditions but fails to maintain stable performance over long periods. Here, the authors report a confinement strategy that suppresses ruthenium dioxide degradation, enhancing its long-term durability. ...
High level ab initio and density functional calculations of the ground state potential energy profiles were carried out to study the mechanism of the ion-molecule reaction CH[sub 4]+O[sub 2][sup +](X [sup 2]螤[sub g]) for four reaction channels: insertion of O[sub 2][sup +] into ...
This article presents a new method for coordinating iridium atoms with dimethylimidazole and cobalt–iron hydroxides. This enhances the oxygen evolution reaction and delivers high current densities with reduced precious metal use. Jie Zhao ,Yue Guo ...
The main and bypass pipes discharge the solution back to the storage tank. The mainline has an orifice plate above the pressure gauge to create cavities of varying strength. The bypass tube has a throttle to regulate the pressure and flow into the mainline. The inlet pressure and the ...
For the reaction,Br2(g)+Cl2(g)2BrCl(g),recently used values for the equilibrium constant K° range from 6 to 10. The spread is due to the use (explicit or implicit) of different values for the dissociation energy of BrCl. The most recent assessment of this quantity yieldedDe=18247±...
could not be detected in the polycrystalline NaxCoO2prepared by solid-state reaction. In another work, Cui et al.[81] reported a comprehensive study of the structure and electrical transport properties of NaxCoO2(x = 0.52, 0.56, 0.60, 0.68, 0.72, 0.76, 0.8). Here, all the samples...
Is there hydrogen bonding for gas phase SN2 pre-reaction complexes?doi:10.1016/j.ijms.2014.04.002Hydrogen bondProton-donorPre-reaction complexMulliken chargeFor some gas-phase X− + CH3Y → XCH3 + Y− SN2 nucleophilic substitution reactions a pre-reaction complex is formed in ...
Li et al. showed that the surface atomic migration is driven by the interplay of electric fields and adsorbed reaction intermediates for cathodic metal electrocatalysts18. Except for the reaction intermediates, we have shown that surface adsorbed/decorated species can also be introduced artificially to...
The catalytic performances of three SAPO-34/18 catalysts are given in Fig. 5a, b and Supplementary Figure 13. All three catalysts show near 100% conversion rate of methanol in the early stage of the reaction. However, after 90 min, the conversion rate of methanol over micron-sized cuboid...