At
the 240th National Meeting of the American Chemical Society,
scientists announced that a new way to catch and absorb carbon
dioxide is through the use of "dry
water."
Dry
water is a powder that looks a lot like sugar, and could be used a
number of ways such as transporting harmful industrial materials
safely and "jumpstarting" chemical reactions in the making
of certain consumer products. It was discovered in 1968, and was seen
only as a potential component for cosmetics. In 2006, it was revisted
by scientists at the University of Hull in order to study its
structure, and ever since, study leader Professor Andrew Cooper and
his team from the University of
Liverpool have studied the substance further, expanding its
potential.
Dry
water is 95 percent water,
even though it is a dry powder. The powder particles contain one
water droplet surrounded by modified silica in each, and the silica
coating stops the water droplets from combining and turning back into
a liquid.
"There's
nothing like it," said Ben Carter, Ph.D., a researcher for
Cooper. "Hopefully, we may see dry water making waves in the
future."
The
dry water powder can absorb and store gases, including carbon
dioxide. The gases chemically combine with the water droplets in dry
water to create what chemists define as a hydrate. Laboratory
research proved that dry water is capable of absorbing over three
times as much carbon dioxide as uncombined water and silica.
According to Cooper and his team, dry water could help reduce global
warming.
There
are several other potential uses for this new substance, though. Dry
water has the ability to store methane, and scientists hope this can
"expand its use as a future energy source." Engineers could
potentially use dry water to transport deposits of natural gas. Also,
dry water could speed up catalyzed reactions between maleic acid
and hydrogen
gas to create succinic acid, which is a raw material used to
make food ingredients, drugs, and various other products. Speeding up
these reactions means that manufacturers wouldn't have to stir
substances together to create the reactions, which leads to a more
energy-efficient and greener way of conducting this process.
"If
you can remove the need to stir your reactions, then potentially
you're making considerable energy savings," said Carter.
In
addition, dry water has the ability to store liquids, and scientists
hope to apply this to the storage of emulsions, which are mixtures of
two or more unblendable liquids. Dry water could store these
emulsions and make it safer for manufacturers to transport and store
harmful liquids.