Processes occurring during reduction and alloy formation in the MoO3-WO3-H2 system. I. Dispersion of reaction products during the reduction of mixed molybdenum and tungsten oxides

1985 ◽  
Vol 24 (11) ◽  
pp. 785-789
Author(s):  
M. P. Savyak ◽  
I. V. Uvarova ◽  
I. I. Karpikov
Keyword(s):  
Alloy Formation ◽  
Reaction Products ◽  
Tungsten Oxides ◽  
And Tungsten

Hydrogenolytic cleavage of pyridine on different cobalt-molybdenum and nickel-tungsten catalysts

1981 ◽  
Vol 46 (6) ◽  
pp. 1348-1354 ◽  
Author(s):  
Mirko Černý ◽  
Miloš Kraus
Keyword(s):  
Reaction Products ◽  
Hydrogenation Activity ◽  
Catalyst Composition ◽  
Tungsten Catalysts ◽  
Nickel Tungsten ◽  
And Tungsten

Composition of the reaction products formed by hydrogenation of pyridine at 300 °C and 15 MPa in the presence of 15 sulphided and unsulphided molybdenum and tungsten catalysts promoted by cobalt and by nickel, respectively, using alumina as the support in most cases, has been examined. It has been proved that the catalyst composition affects both its hydrogenation activity and the ratio of transalkylation to cracking (or hydrocracking) reactions. Relations between the catalyst composition and its activity and selectivity found for the reaction of pyridine differ from those reported for hydrogenolytic cleavage of thiophene, hydrogenation and isomerization of cyclohexene.

Some characteristic features of the coreduction of iron and tungsten oxides with hydrogen

1974 ◽  
Vol 13 (10) ◽  
pp. 787-791
Author(s):  
I. D. Radomysel'skii ◽  
L. F. Barshchevskaya ◽  
R. Z. Vlasyuk
Keyword(s):  
Tungsten Oxides ◽  
Characteristic Features ◽  
And Tungsten

Relationship between structure and point of zero surface charge for molybdenum and tungsten oxides supported on alumina

1992 ◽  
Vol 16 (3) ◽  
pp. 231-239 ◽  
Author(s):  
S. D. Kohler ◽  
J. G. Ekerdt ◽  
D. S. Kim ◽  
I. E. Wachs
Keyword(s):  
Surface Charge ◽  
Tungsten Oxides ◽  
And Tungsten

Direct Synthesis and Structural Characteristics of Ordered SBA-15 Mesoporous Silica Containing Tungsten Oxides and Tungsten Carbides

2007 ◽  
Vol 111 (42) ◽  
pp. 15173-15184 ◽  
Author(s):  
Linhua Hu ◽  
Shengfu Ji ◽  
Zheng Jiang ◽  
Huanling Song ◽  
Pingyi Wu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Structural Characteristics ◽  
Direct Synthesis ◽  
Tungsten Carbides ◽  
Tungsten Oxides ◽  
And Tungsten

Study of the electronic structure of rhenium and tungsten oxides on the O K-edge

Ionics ◽  
1998 ◽  
Vol 4 (1-2) ◽  
pp. 101-105 ◽  
Author(s):  
J. Purans ◽  
A. Kuzmin ◽  
Ph. Parent ◽  
C. Laffone
Keyword(s):  
Electronic Structure ◽  
Tungsten Oxides ◽  
And Tungsten

Colour Changes Induced in Molybdenum and Tungsten Oxides under Flame Impact

Nature ◽  
1949 ◽  
Vol 164 (4169) ◽  
pp. 537-538 ◽  
Author(s):  
J. R. ARTHUR
Keyword(s):  
Tungsten Oxides ◽  
Colour Changes ◽  
And Tungsten
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