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In search of forever

机译:寻找永远

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Methanol is nasty stuff. Careless distillation in many a backwoods still has caused it to blind the imbibers of "alternative" alcoholic drinks. Yet it has its uses, and one of them may be to restore fuel cells to their oft-vaunted role as the power packs of the future-but with a twist. The main role that has been discussed for fuel cells over the past few decades is as replacements for the internal-combustion engine. Their actual use may turn out to be to provide power for portable electronic devices.rnA fuel cell is a device that combines hydrogen with oxygen to generate electricity. The traditional approach has been to use the gas itself in the cell-and that is the approach taken by the world's carmakers in their so-far not very successful attempts to make a commercial fuel-cell-driven car. Since gaseous hydrogen is hard to store and handle, an alternative that some people have considered is to lock the hydrogen up in methanol, a liquid whose molecules are made of a carbon atom, an oxygen atom and four hydrogen atoms. Methanol will react with water in the form of steam to make hydrogen and carbon dioxide-a process known as steam reformation. Put a steam reformer in a car along with the fuel cell and you can fill the tank with methanol instead of hydrogen.
机译:甲醇是令人讨厌的东西。许多偏远地区的粗心蒸馏仍然使它蒙蔽了“替代”酒精饮料的味道。然而它有其用途,其中之一可能是使燃料电池恢复其作为未来动力组的常有的作用-但要有所改变。在过去的几十年中,燃料电池的主要作用是替代内燃机。它们的实际用途可能是为便携式电子设备提供电源。燃料电池是一种将氢气和氧气结合起来发电的设备。传统方法一直是在电池中使用气体本身,而这是世界上汽车制造商迄今尚未成功制造出商用燃料电池驱动汽车的方法。由于气态氢很难储存和处理,因此有人认为,可以将氢锁定在甲醇中,甲醇是一种分子,由碳原子,氧原子和四个氢原子组成的液体。甲醇将以蒸汽的形式与水反应,生成氢气和二氧化碳,这一过程称为蒸汽重整。将蒸汽重整器与燃料电池一起放在汽车中,即可用甲醇代替氢气填充储罐。

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    《The economist》 |2008年第8584期|102-103|共2页
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