Heating reaction container

A heating reaction method using a heating reaction container comprising:

• a first member that comprises a first material and has an annular first contact surface;
• a second member that comprises a second material and has an annular second contact surface and an annular third contact surface positioned further inside than the second contact surface;
• and
• a third member that comprises a third material and has an annular fourth contact surface, wherein
• one of the first member and the third member includes space having an opening to allow a reaction raw material to be provided into an inside of the space,
• the other one of the first member and the third member has a surface with which the opening is closed,
• the opening is closed by the second member being detachably fitted in the first member in a state where the first contact surface faces the second contact surface positioned further inside than the first contact surface and by the third member being detachably fitted in the second member in a state where the third contact surface faces the fourth contact surface positioned further inside than the third contact surface,
• α1, α2, and α3 satisfies a relation of α3>α2>α1, α3=α2>α1, or α3>α2=α1, where α1 represents a thermal expansion coefficient of the first material, α2 represents a thermal expansion coefficient of the second material, and α3 represents a thermal expansion coefficient of the third material,
• a gap is present at least one of between the first contact surface and the second contact surface and between the third contact surface and the fourth contact surface before heating of the reaction raw material,
• the heating reaction method comprising:
• sealing the space, through the heating, by causing the first contact surface to come into intimate contact with the second contact surface and by causing the third contact surface to come into intimate contact with the fourth contact surface;
• and
• causing the reaction raw material to react in the sealed space.

A heating reaction container comprising:

• a first member that comprises a first material and has an annular first contact surface;
• a second member that comprises a second material and has an annular second contact surface and an annular third contact surface positioned further inside than the second contact surface;
• and
• a third member that comprises a third material and has an annular fourth contact surface, wherein
• one of the first member and the third member includes space having an opening to allow a reaction raw material to be provided into an inside of the space,
• the other one of the first member and the third member has a surface with which the opening is closed,
• the opening is closed by the second member being detachably fitted in the first member in a state where the first contact surface faces the second contact surface positioned further inside than the first contact surface and by the third member being detachably fitted in the second member in a state where the third contact surface faces the fourth contact surface positioned further inside than the third contact surface,
• the first contact surface is located inside the first member,
• the second contact surface is located outside the second member,
• the third contact surface is located inside the second member,
• the fourth contact surface is located outside the third member,
• the third member includes a contact surface that comes into contact with the reaction raw material inside the third member,
• α1, α2, and α3 satisfy a relation of α3>α2>α1, α3=α2>α1, or α3>α2=α1, where α1 represents a thermal expansion coefficient of the first material, α2 represents a thermal expansion coefficient of the second material, and α3 represents a thermal expansion coefficient of the third material, and
• a gap is present at least one of between the first contact surface and the second contact surface and between the third contact surface and the fourth contact surface before heating of the reaction raw material, the space being sealed, through the heating, by the first contact surface coming into intimate contact with the second contact surface and by the third contact surface coming into intimate contact with the fourth contact surface.