XIAO Junyin, YU Xiaochen, TANG Weiqiang, et al. DFT study on effect of hydrophilic modification of catalyst on oxidation efficiency of hydrogen gas[J]. CIESC Journal, 2018, (11): 4683-4692.
XIAO Junyin, YU Xiaochen, TANG Weiqiang, et al. DFT study on effect of hydrophilic modification of catalyst on oxidation efficiency of hydrogen gas[J]. CIESC Journal, 2018, (11): 4683-4692.DOI: 10.11949/j.issn.0438-1157.20180562.
Hydrophilic surface modification of the catalyst surface is a common regulation method
which has an important influence on the catalytic activity
selectivity and stability of the catalyst. In this study
the hydrogen-oxygen catalytic system was used as the research object
and the adsorption of hydrogen and water on different hydrophilic surfaces was calculated by multiscale density function theory (DFT) under molecular level. Finally
the effect of adsorption on reactive rate was studied. The results showed that the adsorption amount of water increased with more hydrophilic surface while the adsorption amount of hydrogen decreased. In addition
increasing bulk water density enhanced the adsorption of hydrogen on the surface. The above results not only explained the influence of hydrophilicity on the catalytic activity of the catalyst
but also had helpful guiding for the adjustment and enhancement of the surface reaction process.