Hydrogen energy is a kind of clean and renewable energy source with high energy density. Theoretically it can be widely used in various power equipments, but it is difficult to store at room temperature and pressure is an important bottleneck in its development. According to reports, the team led by Dr. Cheng Hansong from China University of Geosciences (Wuhan), using the method of catalytic hydrogenation of unsaturated aromatic compounds, has successfully overcome the technical bottleneck of hydrogen energy storage and release at room temperature and pressure. Analysts believe that the technology is leading internationally and is expected to become a new opportunity for the development of China's hydrogen energy industry. Significant advantages in the application of hydrogen energy Hydrogen energy is an internationally recognized clean energy source. With the ever-increasing consumption of fossil fuels such as oil, natural gas, and coal, their reserves are declining. One day, these non-renewable resources will be exhausted, and new fossil fuel-rich energy sources will be sought. Gradually by all parties concerned. In this context, some analysts have pointed out that hydrogen energy is such a secondary energy source that is ideal when the conventional energy crisis emerges or appears. Industry experts pointed out that as an ideal new energy source for energy, hydrogen energy has the following characteristics: the lightest weight, the density of 0.0899g/l under the standard state, can become liquid at -252.7°C, if the pressure is increased to several At 100 atmospheres, liquid hydrogen can be changed to metal hydrogen; the best thermal conductivity is 10 times higher than that of most gases; it is estimated that hydrogen constitutes 75% of the mass of the universe. Except that hydrogen is contained in the air, hydrogen is mainly The form of the compound is stored in water, and water is the most extensive material on the earth; it can be recycled, and the waste discharged from a car using hydrogen energy is water, so it can be decomposed again and recycled again; the heating value is ideal, except for nuclear fuel. The calorific value is the highest among all fossil fuels, chemical fuels, and biofuels, which is 142,351 kJ/kg, which is three times the calorific value of gasoline. It has good combustion performance, rapid ignition, extensive flammable range when mixed with air, and high flash point. Faster burning; Non-toxic, the cleanest when burning hydrogen compared to other fuels. It does not produce carbon monoxide, carbon dioxide, hydrocarbons other than water and a small amount of hydrogen nitride. Substances harmful to the environment, such as compounds, lead compounds, and dust particles, and a small amount of hydrogen nitride will not pollute the environment after proper treatment. In addition, hydrogen energy also includes many other advantages, such as the use of many forms, can generate thermal energy through combustion, generate mechanical work in a heat engine, and can also be used as an energy material for fuel cells, or converted into solid hydrogen for structural materials Can exist in a variety of forms, can adapt to the different requirements of storage and transportation and various application environments; Less loss, can be transported from the distance and distance of the pipeline, safety is relatively improved, energy consumption loss is reduced; high utilization rate, hydrogen can eliminate noise sources of internal combustion engine Hazardous energy pollution and high utilization rate; easy transportation, hydrogen can reduce the weight of fuel, can increase the payload of the vehicle, which can reduce transport costs; reduce the greenhouse effect, replacing fossil fuels can minimize the greenhouse effect. In terms of applications, the development and utilization of hydrogen energy is very extensive. New energy vehicles may be the area with the highest degree of relevance to the daily lives of investors. According to industry insiders, Japanese companies are already developing fuel cell technology while domestic car companies are vigorously developing electric vehicles. According to relevant reports, Japan plans to put hydrogen fuel cell vehicles on the market in 2015; in 2016, hydrogen energy power buses will be put on the market; in 2017, professional hydrogen power vehicles will be put on the market; and in 2020, the cost of hydrogen energy automobile fuels will be Hybrid cars will be basically flat. Break through storage bottlenecks or become new opportunities for development Although hydrogen energy has a wide range of applications and its relative advantages are very significant, human development of hydrogen energy has always been a huge bottleneck and it is difficult to break through. Industry experts pointed out that hydrogen is a clean renewable energy source with a high energy density, and its special properties make it difficult to store at normal temperature and pressure, and there is a risk of explosion after leakage. Therefore, only by breaking through the bottleneck of the storage technology, it may lead to the widespread application of hydrogen energy in various power equipment. It is worth noting that Chinese scientists have made new breakthroughs in storage and transportation at normal temperature. According to media reports, the team led by Dr. Cheng Hansong, Director of the Sustainable Energy Laboratory of the China University of Geosciences (Wuhan) and the National “One Thousand Talents Programâ€, successfully used hydrogenation of unsaturated aromatic compounds to successfully overcome hydrogen energy at room temperature. It is difficult to store and release this technical bottleneck under normal pressure. It not only realizes the transport of hydrogen energy at normal temperature and pressure, but also overcomes the disadvantages of high cost and high risk of traditional high pressure transportation. The stored hydrogen can be released after adding catalyst under mild conditions. use. The technical performance indicators of hydrogen storage materials exceed the standards for hydrogen storage materials for vehicles issued by the US Department of Energy. The laboratory study of the project team showed that the melting point of hydrogen storage molecules can be as low as -20°C, and can achieve efficient catalytic hydrogenation at about 150°C, and it can be stored and transported under normal temperature and pressure; the catalytic dehydrogenation temperature is lower than 200°C. The purity of hydrogen produced during the dehydrogenation process can be as high as 99.99%, and no other gases such as CO, NH3, etc. can be produced; the cycle life of the hydrogen storage material is high, and the reversibility is strong (more than 2,000 times); the quality of hydrogen storage capacity is greater than 5.5 wt%. Capacity> 50kg (H2). According to Cheng Hansong, its catalysts can be reused without regeneration, and there is no need to update them within 5 years. Some people in the industry believe that this technology is at the leading international level and may trigger the revolution in hydrogen energy utilization. "Our technology can do hydrogen storage under normal temperature and pressure, and the product form is also mature and can be mass produced," Cheng Hansong said in an interview with the media. Technological breakthroughs quickly attracted the attention of companies. According to reports, the China University of Geosciences and Zhangjiagang Hydro Power New Energy Co., Ltd. signed a cooperation agreement for Jiangsu Hydrogen Energy Co., Ltd. investment. Jiangsu Hydrogen Energy Co., Ltd. was founded by the China University of Geosciences (Wuhan) Sustainable Energy Laboratory, Wuhan Institute of Geological Resources and Environmental Industrial Technology, and the united Zhangjiagang Furuitai equipment company. According to the agreement, the project has a total investment of 70.60 million yuan. Jiangsu Hydrogen Energy Co., Ltd. is responsible for the research, development, manufacturing, and sales of hydrogen energy storage, transformation, applied materials, equipment and technology. Furui equipment will be a liquid hydrogen storage technology pilot test. R&D provides a research platform. (Reporter Long Yue)
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