April 1, 2016
BY University of Manchester
For the first time, scientists have overcome the challenge of breaking down raw biomass without the need for chemical pretreatment, and have produced record high amounts of clean liquid hydrocarbon fuel as a result. This brings us one step closer to lessening our dependence on fossil fuels, and is an important development in our shift towards renewable energy.
The ability to produce sustainable fuel from renewable biomass is becoming increasingly important as we move away from our dependency on fossil fuels. The production and utilization of biomass, or plant material, offers an energy alternative that is almost carbon neutral, as the carbon dioxide is recycled in plant photosynthesis.
In plants, the woody material that is used to produce fuel consists of three different components: cellulose, hemicellulose and lignin. Lignin is a challenge to the production of biofuels, as it is difficult to break down and convert into useful fuel, often requiring high levels of energy or the use of corrosive chemicals. Therefore, up to a third of plant material can go to waste or be burned as low-value fuel.
A team of scientists from The University of Manchester and East China University of Science and Technology stewed a catalyst—made up of the metal complex niobium phosphate, with small particles of platinum dotted across the surface—with raw wood sawdust for 20 hours at 190 degrees Celsius, and a pressure of 50 atmospheres. The results, published in Nature Communications, show that the catalyst was able to directly break down and convert the lignin, which potentially offers the future development of catalysts for converting biomass into fuel.
Sihai Yang, lead author of the study used the Science & Technology Facilities council’s ISIS Neutron and Muon source—often described as a ‘super-microscope’—to study the biomass and catalyst at the molecular level. Using an instrument called TOSCA, Yang and ISIS scientist Dr Stewart Parker used neutrons to see how a model of lignocellulose interacted with the surface of the catalyst to produce useful fuel.”
“The conversion of biomass into fuels typically requires separations and pre-treatments to the raw biomass, thus suffering high energy penalties,” Yang said. “This catalyst showed exceptionally high activity in splitting the carbon-oxygen bonds, the most challenging step in the conversion of lignocellulosic biomass. This new catalytic process can therefore directly convert raw biomass to liquid fuels without separations or chemical pre-treatments, leading to significant potential energy savings.”
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The U.S. Department of Energy Bioenergy Technologies Office (BETO) announced up to $23 million in funding to support research and development (R&D) of domestic chemicals and fuels from biomass and waste resources.
The U.S. DOE has announced its intent to issue funding to support high-impact research and development (R&D) projects in two priority areas: sustainable propane and renewable chemicals and algal system cultivation and preprocessing.
Sens. Sherrod Brown, D-Ohio, and Pete Ricketts, R-Neb., in August introduced the Renewable Chemicals Act, a bill that aims to create a tax credit to support the production of biobased chemicals.
The Chemical Catalysis for Bioenergy Consortium, a consortium of the U.S. DOE’s Bioenergy Technologies Office, has launched an effort that aims to gather community input on the development of new biomass processing facilities.
USDA on March 8 celebrated the second annual National Biobased Products Day, a celebration to raise public awareness of biobased products, their benefits and their contributions to the U.S. economy and rural communities.