Sorbents:

Sorbents reversibly bind and release chemicals, and can be used either to remove pollutants from a process or exhaust stream, or to transfer a useful chemical from one environment to another. TDA develops sorbents that work via physisorption at room temperature, and high temperature sorbents that chemically react and bind tightly with the species to be removed or transferred. Many of our high temperature sorbents can be chemically or thermally cycled to bind and release the target gas millions of times without degrading. Our areas of expertise include:

• Removal of trace metals from gasified coal: Regenerable and expendable sorbents that remove trace metals such as mercury, arsenic from gasified coal at elevated temperatures.
• Removal of H₂S from gasified coal: Zinc and iron based fixed bed, moving bed and fluidized bed regenerable sorbents that can remove H₂S from hot syngas or coal gasifier streams at elevated temperatures.
• Removal of Organosulfur: Sorbents that remove odorants  from natural gas and propane, thereby improving the operation of fuel cells, and sorbents that remove organic sulfur compounds from liquid fuels.
• Oxygen Sorbents: Regenerable chemical sorbents that can pick up and release oxygen at high temperatures are useful in reforming to make syngas and hydrogen, power generation (chemical looping combustion) and industrial processes.
• CO₂ Sorbents: Regenerable high-temperature sorbents that chemically react with and release CO₂ improve the efficiency and reduce the cost of hydrogen production, while low temperature sorbents can remove CO₂ from breathing air in a spacesuit.
• Mercury Sorbents:  Sorbents that remove all species of mercury from the flue gases of coal-fired power plants, even at elevated temperatures.
• HCl Recovery and Recycle: Chemical sorbents can recover HCl from chemical waste streams and for recycle and conversion to more valuable Cl₂.

| Home | About | Research | Products | Library | Contact |