ISOMERIZATION OF 1-BUTENE OVER SODIUM OXIDE AND POTASSIUM OXIDE

1978 ◽  
Vol 7 (4) ◽  
pp. 439-442 ◽  
Author(s):  
Hisayuki Noumi ◽  
Takatoshi Misumi ◽  
Susumu Tsuchiya
Keyword(s):  
Sodium Oxide ◽  
Potassium Oxide

Effect of partial substitution of sodium oxide by potassium oxide on manufacturing properties of glasses

1978 ◽  
Vol 35 (8) ◽  
pp. 446-447
Author(s):  
T. D. Andryukhina ◽  
E. I. Raevskaya ◽  
�. I. Sanina ◽  
I. L. Tarasova
Keyword(s):  
Sodium Oxide ◽  
Partial Substitution ◽  
Potassium Oxide

The effect of adding fluorine and replacing sodium oxide by potassium oxide on the crystallization properties of sheet glass

1965 ◽  
Vol 22 (6) ◽  
pp. 385-388 ◽  
Author(s):  
F. G. Solinov ◽  
V. M. Budov ◽  
Yu. D. Kruchinin ◽  
L. M. Ignat'eva
Keyword(s):  
Sheet Glass ◽  
Sodium Oxide ◽  
Potassium Oxide ◽  
Crystallization Properties

Action Mechanism of β-Si3N4 in Bauxite Sintering

2014 ◽  
Vol 543-547 ◽  
pp. 3834-3838
Author(s):  
Jun Hong Chen ◽  
Bin Li ◽  
Hua Sheng Zhan ◽  
Jin Dong Su ◽  
Ming Wei Yan ◽  
...  
Keyword(s):  
High Temperature ◽  
Melting Point ◽  
Partial Pressure ◽  
Sodium Oxide ◽  
Potassium Oxide ◽  
Oxide Content ◽  
Partial Pressure Of Oxygen ◽  
Action Mechanism ◽  
High Potassium ◽  
High Partial Pressure

In this paper, we added silicon nitride in the samples of common bauxite and the bauxite with high potassium and sodium oxide content, treated them at the high temperature of 1,400°Cand 1,500°C, and then conducted analysis with XRD, SEM and EDS. The results are as follows: After adding β-Si3N4 in sintered bauxite, the partial pressure of oxygen in the composite materials will be reduced, the decomposition and volatilization of compounds with high partial pressure of oxygen (such as potassium oxide and sodium oxide) will be promoted, the content of these compounds in the bauxite will be lowered, and the hazards of the compounds with low melting point will be weakened; meanwhile, with the reduction of potassium, sodium and iron oxide, the lattice of alumina will be activated, the β-Sialon phase will be easily formed and the high temperature properties of sintered bauxite materials will be strengthened.

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