Such new materials MOF, 1 g can be covered football stadium 1.3
Northwestern University (Northwestern University), a research team has designed and synthesized new materials with ultra-high surface area and porosity, used for storing hydrogen fuel cell powered vehicles, and methane gas. hydrogen, methane and carbon dioxide gases is an alternative clean energy alternatives, we had to find the most optimal storage and transport methods, scientists have carried out a number of studies. If you want more vividly describe this material MOF magic played, then – due to its porosity nanoscale, sample one gram of such a material ( a volume of about 6 chocolate M & M), which surface area can be spread to cover a full 1.3 football field ! Who led the study, members of the International Institute for Nanotechnology at Northwestern University Omar Fajardo (Omar K. Farha) said: \”We have developed a better on-board storage of hydrogen and methane gas for next-generation clean energy vehicles method. \”\” to this end, we used a porous material chemistry designed with precise arrangement of atoms, in order to achieve ultra high porosity. \”sorbent is a liquid or gas molecules bound to the surface thereof a porous solid. Farha also noted that this new material for the entire gas industry also could be a breakthrough because many industries and applications require the use of compressed gases, such as oxygen, hydrogen, and methane. The research combines experimental and molecular modeling, chemistry designed using a porous material precise arrangement of atoms, in the final outcome of April 17, published in \”Science\” ( Science ) magazine.
This ultra-porous material MOF showed amazing gas storage performance. It porous framework called \”NU-1501\”, constructed from metal ions or organic molecules and clusters, the clusters will self-assemble into multi-dimensional, highly crystalline – you can put it conceived as a set Tinkertoy (like Lego and circuit blocks), wherein the metal ions or cluster node can be imagined as round or square, the organic molecule as the connecting rod together node. researchResearchers are The six organic linker, iron, aluminum, chromium or scandium metal trimeric construct NU-1500 together. Wherein, NU-1501-Al to absorb an amount of 0.66 gg-1, than one stroke by weight methane storage target DOE (0.5 gg-1) . At 100 bar / 270 K to [262 cm 3 (standard temperature and pressure, STP) cm -3 ], at 270 K is 0.60 gg-1 [238 cm [ 123] 3 (STP) cm -3 ] the working capacity of 5-100 bar; it also shows a pressure swing and temperature (77 K / 100 bar → 160 K / 5 bar ) the combination, can almost achieve the best capacity to deliver hydrogen (14.0 wt%, 46.2 g l -1). Currently, hydrogen and methane powered vehicles need to run the high pressure compressor. Pressure hydrogen tank is 300 times the pressure in car tires. Due to the low density of hydrogen, the pressure to achieve the price to pay is very expensive, and because the gas is highly flammable, such a solution is not safe. Development may be at a lower pressure hydrogen and methane gas stored in the car\’s new adsorbent material, can help scientists and engineers to achieve the objectives of the United States Department of Energy, that the development of the next generation of clean energy vehicles. To achieve these goals, it is necessary to optimize the size and weight of the vehicle-mounted fuel tank. The high porosity of the material balance in the study of hydrogen and methane by volume (size) and the weight (mass) transfer capacity may allow researchers step closer to achieving these goals. \”we may be stored in the pores of MOF large amount of hydrogen and methane, and is lower than the desired current FCV much pressure to deliver it to the car engine.\”
Northwest University the researchers conceived the concept of MOF, and work with computational modeling staff Colorado School of Mines, confirmed that such material is very attractive. Then, Fajardo (Farha) and his team design, synthesis and characterization of materials. They also scientists with the American National Standards Institute (NIST) cooperation was high-pressure gas adsorption experiments.This research was supported by the US Department of Energy\’s Energy Efficiency and Renewable Energy Office (grant number DE-EE0008816).