Cutting-Edge R&D System for Advanced Magnesium Processing
CU-Boulder was awarded a three-year, USD 3,6 million grant from the U.S. Energy Department’s Advanced Research Projects Agency in September 2013. CU-Boulder Professor Alan Weimer and his research team will utilize the Harper reactor to produce both magnesium and synthesis gas, or syngas, a precursor for synthetic gasoline. Harper’s unique system will perform the advanced carbothermal reaction of carbon and magnesium oxide, which are heated to high temperatures to produce magnesium vapor and carbon monoxide gas. While the magnesium vapor is converted into a solid metal, the carbon monoxide is combined with steam and excess heat recovered from the solar-electrical reactor to shift the carbon monoxide into hydrogen and carbon monoxide, the syngas building blocks that can be catalytically reacted into Diesel fuel or gasoline. One of the most advanced customizations of the Harper system includes the hybrid utilization of both electric energy and renewable, concentrated solar power for heating. The current leading process to produce magnesium involves using electricity 24 h a day, a method that is particularly expensive because of high-energy consumption during daylight hours. The CU-Boulder team will use solar energy to power the reactor in the daytime and use electricity only at night during off-peak hours. Magnesium is 75 % lighter than steel and 33 % lighter than aluminum. By 2020, magnesium parts will allow cars and trucks to weigh 15 % less, leading to fuel savings of 9–12 %, according to the U.S. Automotive Materials Partnership, an industrial coalition of the Chrysler Group LLC, the Ford Motor Company and the General Motors Co. The Weimer research lab has been engaged in solar-thermal processing for the past 17 years and is the largest academic solar-thermal chemistry research team in the United States.