Slide bài giảng hydrogen energy

Class of ‘K55 TT KH MT’ Thermochemistry mini-project Accelerated Chemistry hydrogen energy hydrogen Hydrogen [H]  CAS-ID: 1333-74-0 An: 1  N: 0 Am: 1.00794 g/mol Group No: 1 Group Name: Non-metals Block: s-block  Period: 1 State: gas at 298 K (the lightest gas known) Color: colorless  Classification: Non-metallic Boiling Point: 20.268K (-252.87°C) Melting Point: 14.01K (-259.14°C) Critical temperature: 33K (-240°C) Density: 0.08988g/cm3 H hydrogen energy New energy Renewable energy Non-polluted Future energy Apply in many fields produce ways to produce hydrogen water electrolysis by using solar energy and solar cell photoelectrochemical by using radiant and optical catalyst the reaction for both method: H2O  H2 + 1/2 O2 ΔH= 286 kJ/mol energy comparison  When mole of Hydrogen is burned, the energy released is: H2+ O2 H2O ΔH = -286 kJ/mol When mole of gasoline, the main component is octane, is burned: C8H18 + O2 8CO2 + 9H2O ΔH = -269 kJ/mol mol hydrogen gives more energy than mol octane when we burn them in the engine Calculate in mass Assume that we have gram of hydrogen and gram of gasoline(assume octane) are burned, the energy gained is: 1g   hydrogen: 1g gasoline: 1g hydrogen burned gives more energy than 1g gasoline burned However, - L hydrogen in standard conditions contains 0.08388g H2 , being burned will released 0.08988x143=12.85kJ of energy - while 1L gasoline(assume octane) in SC contains 718.96g of octane, being burned will released 718.96x2.36=2415.7kJ of energy  Therefore 1L gasoline is more useful than 1L of hydrogen However, the hydrogen fuel we use is in liquid phase that means we have a lot of litters of hydrogen, so hydrogen is better hydrogen replace gasoline  for transportation There has been a lot of cars powered by hydrogen  hydrogen fuel production i nstead of electricity Hydrogen is used to produce electricity instead of fossil fuels, made ​in the fuel cell hydrogen space travel Konstantin Eduardovich Tsiolkovsky 17 Sep 1857 – 19 Sep 1935 Russian Fields: Astronautic theory Known for: Tsiolkovsky's rocket equation In 1903, Konstantin Tsiolkovsky, a Soviet rocket scientist and pioneer of the astronautic theory, was the first to theorize that the rockets used for space travel needed to be built in stages and hydrogen and oxygen would be the most powerful fuels to use On July 20, 1969 the Apollo 11 Lunar Module, used liquid hydrogen and nitrogen in the form of hydrazine (N2H4) as a propellant to both land and take off from the moon's surface The Space Shuttle uses fuel cells to create a maximum thrust level of approximately 12,000,000 horsepower Today, NASA has used hydrogen for years to launch rockets and fuel space shuttles In fact, every time we see a rocket launched on TV, the enormous thrust and cloud of smoke and fire is caused by the ignition of the liquid hydrogen tanks The interesting is hydrogen not only fuel supply but also provides super clean water for the astronauts because water is a waste of fuel cells Vũ Tuấn Tài Phạm Đức Tú Lê Danh Quân Nguyễn Tá Nam Nguyễn Quang Văn thank you for listening [...]... a maximum thrust level of approximately 12,000,000 horsepower Today, NASA has used hydrogen for years to launch rockets and fuel space shuttles In fact, every time we see a rocket launched on TV, the enormous thrust and cloud of smoke and fire is caused by the ignition of the liquid hydrogen tanks The interesting is hydrogen not only fuel supply but also provides super clean water for the astronauts