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1.
The interaction between NO and CO over CuxCo3–xO4 spinels (0x1) has been studied. It has been found that the two reactions of NO reduction, to N2O and N2, respectively, are accelerated by the increase of Cu content (x). With the second reaction acceleration occurs only at x>0.5. This is attributed to the presence of different centers on which N2O and N2 are formed.
NO CO CuxCo3–xO4 (0x1). , NO N2O N2 Cu (x). x>0,5. , N2O N2.
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2.
Catalytic properties of Pd black-oxide systems have been studied in hydrogenation of crotonaldehyde. It has been revealed that the additions of basic and amphoteric oxides (MgO, Fe2O3 and ZnO) increase the hydrogenation rate of the ethylenic bond in crotonaldehyde.
Pd-- . , (MgO, Fe2O3, ZnO) .
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3.
The mechanism of hydrogen isotope exchange in aqueous alkaline solutions (AAS) of D2 has been studied using Interacting Bonds Method (IBM) data obtained for hydrogen interaction with the molecular ion H3O 2 . Models for the activated and metastable intermediate complexes are described.
- D2 (). () H3O 2 . .
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4.
The physical adsorption of CO molecules on SnO2 is shown to be accompanied by a reversible change in the ESR parameters of CO 2 anion radicals. The effect of CO is different for SnO2 samples with different life histories.
, CO SnO2 - O 2 , CO SnO2 .
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5.
The interaction of CO and O2 on the oxidized surface of polycrystalline palladium under steady state reaction conditions has been studied. The adsorption of carbon monoxide leads to the appearance of its and states. The state on the surface shifts the temperature dependence of the CO oxidation rate under s.s. conditions by about 200 K.
CO O2 . , CO. CO 200° CO .
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6.
The chemical effect of a hydrogen bond of increased strength responsible for the existence of H3O 2 and determining mainly the Ea of the catalytic isotope exchange (IE) of hydrogen with water-alkaline solutions (WAS) is discussed. Assuming that the H3O 2 associates are also effective in the case of water-alkaline melts (WAM), experimental kinetic evidence in favor of the suggested treatment of the IE mechanism is considered.
, H3O 2 Ea () (). H3O 2 - () .
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7.
Electron microscopic studies reveal that repeated air/hydrogen regeneration cycles cause irreversible structural changes of a Pt/C catalyst involving sintering and migration of the platinum over the support. This is reflected by a serious decrease of the catalytic activity. With hydrogen treatment only, these effects are less significant.
, / Pt/C, . . .
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8.
ESR studies have revealed that in Ti–Mg catalysts after interaction with organoaluminium compounds, the Ti3+ ions formed are present mainly as TiCl3 associates. Isolated Ti3+ ions of various types are also detected. Part of titanium ions is in the divalent state and provides an ESR signal after oxidation by water to the trivalent state in the form of Ti3+ ordered by cooperative Jahn-Teller interaction.
, - , Ti3+ TiCl3. Ti3+ . Ti3+ - -.
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9.
    
Kinetics of the bis(2,2,6,2-terpyridine) iron(II)-cobalt(III) electron transfer reaction in sulfuric acid medium has been studied using stopped-flow spectrophotometry. The reaction is first order both in substrate and oxidant. Hydrogen ions accelerate the reaction, whereas bisulfate ions retard. A suitable mechanism is proposed considering Co3+, CoSO 4 + and Co(SO4) 2 as the reactive oxidizing species.
(2,2,6,2-)(II)(III) . , , . , -. , Co3+, CoSO4 + Co(SO4)2 .
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10.
A new method of preparation of highly active catalysts for metathesis of -olefins through the anchoring of [Mo2O4(C2O4)2(H2O)2]2– anion to the surface of -Al2O3 with further thermal activation in H2 and CO is proposed.
- [Mo2O4(C2O4)2(H2O2]2– -Al2O3 H2 CO.
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