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图1中画出了演示气体吸附实验的仪器,它由长为30—50厘米、直径为1—2厘米的玻璃管所制成。管的一端塞以具有气体导管的软木塞。在管中放入四个垫圈(为了防止放置在管中物质的相混杂)“垫圈”系以直径为1毫米的钢丝(图1甲)所示,弯曲两端而成,为了它能在管中自由移动,将环折使与杆成直角(图1乙)。在置人管中的“垫圈”上放一层棉花,但为了使对流动气体不受过大的阻力,故不应用力压紧它。在棉花上放置锯木屑,再铺一薄层棉花,并放入第二个“垫圈”。垫圈之另一端铺一层棉花後,放入下一个铺有棉花层的垫圈。在第二第三“垫圈”间及第三“垫圈”另一端棉花
An instrument demonstrating gas adsorption experiments is shown in Fig. 1 and is made of a glass tube having a length of 30 to 50 cm and a diameter of 1 to 2 cm. One end of the tube is plugged with a cork with a gas conduit. Place four washers in the tube (in order to prevent the mixture of substances placed in the tube). The “washer” is made of steel wire with a diameter of 1 mm (Fig. 1 A), bent at both ends, In the free movement, the ring folded at right angles (Figure 1 B). Put a layer of cotton on the “gaskets” in the man-made tube, but in order not to over-flow the flowing gas, it should not be pressed hard. Place sawdust on the cotton, spread a thin layer of cotton and put it in the second “washer”. Place the other end of the washer with a layer of cotton and place it in the next washer with the cotton layer. Cotton between the second third “washer” and the other end of the third “washer”