科学家们展望,氢气将成为新世纪的新能源,氢原子将取代碳原子。那末,氢在哪里? 氢就蕴藏于浩瀚的海洋之中。我们知道,海洋的总体积约为13.7亿立方公里,若把其中的氢能提炼出来,就有1.4×10~(17)吨。可见氢能是取之不尽用之不竭的。电解水即可分解成氢和氧。 氢能源的最大优点是:一是资源丰富;二是对环境几乎没有危害,作为燃料燃烧时只生成水;三是氢的燃烧值高,每公斤氢燃烧后能放出142.35千焦耳热量,约为汽油的3倍,酒精的3.9倍。 氢作为燃料面临的主要问题是成本问题,目前生产的氢,其成本比生产相同能量的汽油贵3倍。但专家们认为,由于氢能绝对有利于环境,所以即使 Scientists expect that hydrogen will become a new energy source in the new century, and hydrogen atoms will replace carbon atoms. Then, where is hydrogen? Hydrogen is contained in the vast ocean. We know that the total volume of the oceans is about 1.37 billion cubic kilometers. If the hydrogen energy is extracted, there will be 1.4 × 10-17 tons. Visible hydrogen is inexhaustible. Electrolyzed water can be decomposed into hydrogen and oxygen. The biggest advantage of hydrogen energy is: First, rich in resources; the second is almost no harm to the environment, as a fuel combustion only generates water; third is the high value of hydrogen combustion, hydrogen per kilogram of hydrogen can emit 142.35 kJ heat about 3 times gasoline, 3.9 times alcohol. The main problem with hydrogen as a fuel is the cost issue, which is currently three times more expensive than producing the same amount of energy. However, experts believe that even though hydrogen energy is absolutely beneficial to the environment,