Featured Research

from universities, journals, and other organizations

Corn Yields Another Useful Product: Polypropylene Glycol

Date:
November 26, 2001
Source:
University Of Wisconsin, Madison
Summary:
An industrial chemical found in antifreeze, de-icing fluids, and liquid detergents could soon stand alongside animal feeds, sweeteners and cooking oil as a commercial product made from corn.

MADISON -- An industrial chemical found in antifreeze, de-icing fluids, and liquid detergents could soon stand alongside animal feeds, sweeteners and cooking oil as a commercial product made from corn.

Randy Cortright and James Dumesic, chemical engineers at the University of Wisconsin-Madison, have invented a catalytic process for converting the corn-derived compound, lactic acid, into the chemical polypropylene glycol. More than 450 tons of polypropylene glycol are used in the United States annually.

Unlike current processes for manufacturing polypropylene glycol, which make use of petroleum-based starting materials, this advance taps into a low cost, renewable resource available in surplus right now. The U.S. Department of Agriculture estimates that over a billion bushels of corn went unused last year.

"This [technology] provides a sustainable method of producing important chemicals," Cortright says. It also promises to reduce reliance on imported oil and open new markets for U.S.-grown corn.

A chain of processes links corn to polypropylene glycol. It begins with fermentation of the corn-derived sugar glucose into lactic acid, followed by separation and purification of the acid. Cortright and Dumesic's method completes the critical last step by using a copper catalyst in the presence of hydrogen gas to chemically transform lactic acid into polypropylene glycol.

The approach is more cost-efficient than past methods, Cortright says. "We're using a relatively inexpensive metal, running the reaction at lower [hydrogen] pressure and we get 100 percent conversion," of the lactic acid, with fewer unwanted byproducts like alcohols.

Cortright and Dumesic's research builds upon the work of Homer Adkins, a UW-Madison chemistry professor from 1919-49. At a time when most chemicals were produced from agricultural products rather than oil, Cortright says, Adkins was the first to use copper catalysts to turn lactic acid into propylene glycol. "It feels like we've come full circle," Cortright says, "We enhanced the technology, but the basic ideas were known 70 years ago."


Story Source:

The above story is based on materials provided by University Of Wisconsin, Madison. Note: Materials may be edited for content and length.


Cite This Page:

University Of Wisconsin, Madison. "Corn Yields Another Useful Product: Polypropylene Glycol." ScienceDaily. ScienceDaily, 26 November 2001. <www.sciencedaily.com/releases/2001/11/011120051947.htm>.
University Of Wisconsin, Madison. (2001, November 26). Corn Yields Another Useful Product: Polypropylene Glycol. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2001/11/011120051947.htm
University Of Wisconsin, Madison. "Corn Yields Another Useful Product: Polypropylene Glycol." ScienceDaily. www.sciencedaily.com/releases/2001/11/011120051947.htm (accessed July 22, 2014).

Share This




More Matter & Energy News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Government Approves East Coast Oil Exploration

Government Approves East Coast Oil Exploration

AP (July 18, 2014) The Obama administration approved the use of sonic cannons to discover deposits under the ocean floor by shooting sound waves 100 times louder than a jet engine through waters shared by endangered whales and turtles. (July 18) Video provided by AP
Powered by NewsLook.com
Sunken German U-Boat Clearly Visible For First Time

Sunken German U-Boat Clearly Visible For First Time

Newsy (July 18, 2014) The wreckage of the German submarine U-166 has become clearly visible for the first time since it was discovered in 2001. Video provided by Newsy
Powered by NewsLook.com
Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Reuters - US Online Video (July 17, 2014) President Barak Obama stopped by at a lunch counter in Delaware before making remarks about boosting the nation's infrastructure. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

TheStreet (July 16, 2014) Oil Futures are bouncing back after tumbling below $100 a barrel for the first time since May yesterday. Jeff Grossman is the president of BRG Brokerage and trades at the NYMEX. Grossman tells TheStreet the Middle East is always a concern for oil traders. Oil prices were pushed down in recent weeks on Libya increasing its production. Supply disruptions in Iraq fading also contributed to prices falling. News from China's economic front showing a growth for the second quarter also calmed fears on its slowdown. Jeff Grossman talks to TheStreet's Susannah Lee on this and more on the Energy Department's Energy Information Administration (EIA) report. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins