Abstract: An adsorbent block that has a high adsorption efficiency and can be produced at a low cost is provided. A paste comprising water having mainly active carbon powder dispersed therein is prepared, and a molded block is formed with the paste. Water is removed from the molded block to bind mainly the active carbon powder, so as to obtain an adsorbent block formed to have cells. The paste contains an agar component that is capable of shrinking the molded block and of increasing the surface area of the cell by disappearance.

Abstract: An adsorbent block that has a high adsorption efficiency and can be produced at a low cost is provided. A paste comprising water having mainly active carbon powder dispersed therein is prepared, and a molded block is formed with the paste. Water is removed from the molded block to bind mainly the active carbon powder, so as to obtain an adsorbent block formed to have cells. The paste contains an agar component that is capable of shrinking the molded block and of increasing the surface area of the cell by disappearance.

Abstract: Thermally insulating containers or the Dewar containers useful for shipping and storage of low-temperature liquefied gases, having double walls made of a metal, the space between the walls being evacuated, are provided, the thermal insulation properties of which are prevented from deterioration by putting in the vacuum space, a getter alloy composed of a ternary alloy expressed by the formula LaNi.sub.x Cr.sub.y, where x is a number from 1 to 6, both inclusive and y is a number from 0.1 to 2, both inclusive, working to adsorb traces of hydrogen coming out of the wall material. The alloy is preferably an activated one. The vacuum thermal insulation can further be improved by the presence of an adsorbent having a large specific area which serves to adsorb traces of gases other than hydrogen.