Low-Temperature Interaction of Dioxygen and Carbon Monoxide with Microporous Films of Co(II) Porphyrins Containing Bulky tert-Butyl Substituents

AbstractAs the technology development, the future advanced combustion engines must be designed to perform at a low temperature. Thus, it is a great challenge to synthesize high active and stable catalysts to resolve exhaust below 100 °C. Here, we report that bismuth as a dopant is added to form platinum-bismuth cluster on silica for CO oxidation. The highly reducible oxygen species provided by surface metal-oxide (M-O) interface could be activated by CO at low temperature (~50 °C) with a high CO2 production rate of 487 μmolCO2·gPt−1·s−1 at 110 °C. Experiment data combined with density functional calculation (DFT) results demonstrate that Pt cluster with surface Pt−O−Bi structure is the active site for CO oxidation via providing moderate CO adsorption and activating CO molecules with electron transformation between platinum atom and carbon monoxide. These findings provide a unique and general approach towards design of potential excellent performance catalysts for redox reaction.

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Selective low temperature carbon monoxide oxidation in H2-rich gas streams over activated carbon supported catalysts

Applied Catalysis A General ◽

10.1016/s0926-860x(03)00304-1 ◽

2003 ◽

Vol 251 (1) ◽

pp. 75-83 ◽

Cited By ~ 57

Author(s):

S Özkara

Keyword(s):

Carbon Monoxide ◽

Activated Carbon ◽

Low Temperature ◽

Supported Catalysts ◽

Carbon Monoxide Oxidation ◽

Gas Streams

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Role of PdAg interface in Pd-Ag/SiO2 bimetallic catalysts in low-temperature oxidation of carbon monoxide

Kinetics and Catalysis ◽

10.1134/s0023158415030027 ◽

2015 ◽

Vol 56 (3) ◽

pp. 379-385 ◽

Cited By ~ 13

Author(s):

I. S. Bondarchuk ◽

G. V. Mamontov

Keyword(s):

Carbon Monoxide ◽

Low Temperature ◽

Bimetallic Catalysts ◽

Low Temperature Oxidation ◽

Temperature Oxidation ◽

Oxidation Of Carbon Monoxide

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Effect of the ionizing radiation on the catalytic activity of the BASF K-3-10 catalyst in the low-temperature conversion of carbon monoxide by water vapour. Stability of the radiation catalytic effects

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19861571 ◽

1986 ◽

Vol 51 (8) ◽

pp. 1571-1578 ◽

Cited By ~ 26

Author(s):

Alois Motl

Keyword(s):

Carbon Monoxide ◽

Catalytic Activity ◽

Low Temperature ◽

Catalytic Effect ◽

Catalytic Properties ◽

Beta Radiation ◽

Fast Neutrons ◽

Time Interval ◽

The Stability ◽

Catalytic Effects

The radiation catalytic properties of the BASF K-3-10 catalyst were studied, namely the dependence of these effects on the time interval between the catalyst irradiation and the reaction itself and also on the length of the catalyst use. The catalytic effects decrease exponentially with the interval between the irradiation and the reaction if the catalyst is kept in the presence of air. The stability of effects induced by various types of radiations increases in the sequence beta radiation - gamma radiation - fast neutrons. The radiation catalytic effect stability in the reaction increases in the same sequence.

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