(2)The Ellingum diagram for the S-H-O system:
  to S-O system   to S-C-O system
  Description
  Details

1. Diagram
   
   (1)The three dimensional Ellingham diagram for S-H-O system
   
   
   (a)
   
   Fig. 2a Three dimentional diagram for the S-H-O system. No.1. Without any transparency of compounds.
   (b)
   
   Fig. 2b Three dimensional diagram for the S-H-O system. No. 2. With tranparent H2(g), O2(g), and H2O(g)
   (c)
   Fig. 2c Three dimensional diagram for S-H-O system. No. 3. Two dimensional display.
   (d)
   Fig. 2d Three dimensional diagram for S-H-O system. No. 4. Two dimensional display with selecting the sulfur containing gaseous species at 10-6 atm.
   
   
2. Description
     to top of page   to top of S-H-O system   Details
   • The three dimensional Ellingham diagram for the S-H-O system is apparently look like to those diagram for H-O system. The species of O2(g), H2O(g) and H2(g) are the dominant species in addition to the H2O(l) stable state.
   • Stable sulfur containing species are displayed as polyhedron inside the shown polyhedron consisting of O2(g), H2O(g) and H2(g).
   • In order to look into the sulfur containing species, it is necessary to make those polygons of O2(g), H2O(g) and H2(g) transparent.
   • Diagram (c) can be regarded as the Ellingham diagram for sulfur. Here, the borderline btween the dominant species are displayed.
   • The stable region of those dominat species are strongly influenced by the partial pressure of gaseous species.
   
   
3. Details
     to top of page   to top of S-H-O system   Description
   Figure (a)
   [System] MALT   Search Compounds
   Selection of <S,C,O> system
   
   MALT   Tools > CHD with CHD parameter of "/md"
   • CHD   Project > Specify Diagram
     • Dimension Selection page
       
       Temperature: Not Fixed
     • Diagram Selection page
       
       • Click Default bottun twice to select T and Gibbs energy axes. There appear one temperature axis and three Gibbs energy ases.
       • Select the three dimensional diagram.
   Figure (b) Making compounds transsparent
   • Start the mode of transparent on
     • Method 1   Diagram > Display Mode > Touch Diagram
     • Method 2 Use of popupmenu which appears by right^hand click of mouse on the legend box.
       Select Transparent on
   • Select compounds to become tranparent
     Confirm that the mode is selected to be touch diagram. This is displayed in tool bar or the upper left corner of the diagram display panel.
     • Method 1
       Click on the compound to be transparent in the Legendle.
     • Method 2   View > Graph Inspection Compounds page
       Click on the compound to be transparent in the page.
       Note that this mode is primarily to touch diagram to see the details of chemical potential values. When mouse touched diagram not legendle, the chemical potential table will appear.
   • End of the tranparent on mode
     • Method 1   Diagram > Display Mode > Normal
     • Method 2 Use of popupmenu which appears by right^hand click of mouse.
       Select Transparent off
     
     
   • Change location of the compound numbers in the diagram
     • Method   Diagram > Display Mode > Change Location
     
     Figure (c)
     •   Diagram > Rotation
       The default button provides three modes 1(XY_Z) 2(XY) 3(x_Y_z).
       Select 2(XY).
     
     Figure (d)
     •   Project > Chemical System Select Compounds page
       Check the Specify Activity(Gas) and then
       Actibity Specification box appears
       
       • Change log (p) value from 0 to -6
       • Remove checks from the O and H remaining only S.