Effect of annealing on the structure and properties of molybdenum coatings on steel Kh12M

Андреев, А. А.; Bulatova, L. V.; Kartmazov, G. N.; Kostritsa, T. V.; Romanov, A. A.

doi:10.1007/bf00773154

Cited by 2 publications

(1 citation statement)

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“…Bulk molybdenum carbides have exhibited promising catalytic activity for the WGS reaction, which is superior to that of the commercially used catalysts. The coatings of molybdenum carbide on metal substrates can be obtained by vacuumplasma deposition (2), by heating a molybdenum substrate in CO atmosphere at 1003 K followed by an annealing step at 1973 K (3), by reduction of Mo(CO) 6 with hydrogen on a metal wire at 573 -1073 K (4), and by oxidation of ammonium paramolybdate to molybdenum trioxide followed by its reduction in an equimolar mixture of methane and hydrogen (5). The electrochemical synthesis of molybdenum carbides from molten salts has some advantages compared with other methods.…”

Section: Introductionmentioning

confidence: 99%

Molten Salts as a Promising Medium for the Synthesis of Highly Active Catalytic Coatings

Dubrovskiy

Kuznetsov

2013

ECS Trans.

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The joint electroreduction of CO 3 2-and MoO 4 2-ions on a molybdenum cathode in a NaCl-KCl-Li 2 CO 3 -Na 2 MoO 4 melt was studied by cyclic voltammetry. The electrochemical synthesis of Mo 2 C on molybdenum and graphite substrates has been performed. In all cases Mo 2 C coatings with the hexagonal lattice were obtained. The molybdenum carbide coatings on a molybdenum substrate (Mo 2 C/Mo) show catalytic activity in the water gas shift (WGS) reaction at least three orders of magnitude higher than that of the bulk Mo 2 C phase. It was found that the H 2 S does not affect on the activity, stability, and selectivity of the catalyst.

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Section: Introductionmentioning

confidence: 99%