Glass panel unit, getter material, getter material composition, and method for manufacturing glass panel unit

A glass panel unit comprising:

• a first glass pane;
• a second glass pane facing the first glass pane;
• a frame member hermetically bonding the first glass pane and the second glass pane;
• an evacuated space surrounded with the first glass pane, the second glass pane, and the frame member;
• and
• a gas adsorbent placed in the evacuated space,
• the gas adsorbent containing a getter material,
• the getter material containing a plurality of particles of a zeolite crystal,
• particles having a particle size of 200 nm or more and 5000 nm or less accounting for more than half of a total number of the plurality of particles,
• an activable temperature of the plurality of particles being equal to or lower than 400° C.

A glass panel unit comprising:

• a first glass pane;
• a second glass pane facing the first glass pane;
• a frame member hermetically bonding the first glass pane and the second glass pane;
• an evacuated space surrounded with the first glass pane, the second glass pane, and the frame member;
• and
• a gas adsorbent placed in the evacuated space,
• the gas adsorbent containing a getter material,
• the getter material containing a plurality of particles of a zeolite crystal,
• particles having a particle size of 200 nm or more and 5000 nm or less accounting for more than half of a total volume of the plurality of particles,
• an activable temperature of the plurality of particle being equal to or lower than 400° C.

A glass panel unit comprising:

• a first glass pane;
• a second glass pane facing the first glass pane;
• a frame member hermetically bonding the first glass pane and the second glass pane;
• an evacuated space surrounded with the first glass pane, the second glass pane, and the frame member;
• and
• a gas adsorbent placed in the evacuated space,
• the gas adsorbent containing a getter material,
• the getter material containing a plurality of particles of a zeolite crystal,
• particles having a particle size of 200 nm or more and 5000 nm or less accounting for more than half of a total weight of the plurality of particles,
• at least one of a softening point, a melting point, or a bondable temperature of a sealant forming the frame member being equal to or lower than 350° C.