Gold is known
as a noble metal because it is relatively unreactive.
Not exact matches
Only with this experimental set - up is it possible to measure the tiny forces between microscope tip and
noble gas atom,
as a pure
metal surface would allow the
noble gas atoms to slide around.
«We show that our multivalent oxygen sponges can undergo such a redox process at
as low
as 200 degrees Celsius, which is comparable to the working temperature of
noble metal catalysts,» Lee said.
Noble metals such
as platinum are useful
as catalysts for versatile chemical reactions including fuel cell vehicles and reduction of CO2 emission.
This synthesis route is capable of developing alternative catalysts of
noble metals for many eco-friendly technologies such
as fuel cell vehicles, hydrogen generation from water and CO2 reduction.
A few
noble metals, such
as gold and platinum, can avoid HER and convert CO2 to CO; however, these
metals are relatively rare and too expensive to serve
as cost - efficient catalysts.
Encouragingly, the DMFCs operated extremely well with high - concentration methanol
as fuel by sufficiently making use of the structural uniqueness and electronic coupling effects among the different domains of the
noble metal - based heterogeneous electrocatalysts.
Although much progress has been made in recent years in the development of catalysts devoid of
noble metals, photosensitizers still rely, in the main, on molecular compounds containing rare and costly
metals, such
as ruthenium and iridium, or on inorganic semiconductor materials containing cadmium, a toxic
metal.
«We're using Earth - abundant materials — iron, manganese and phosphorus —
as opposed to
noble metals that are much more expensive.»
Porous nanosized structures that can hold platinum and other
noble metals can be directly used in such a way
as to circumvent the problems of today's carbon - supported catalysts.
The Art of
Metal Gear Solid 5 will be available at local comic book stores
as well
as Amazon, Barnes &
Noble and Indiebound.
Its stylistic roots go far back in automotive history: great swathes of fine leather, more
metal than plastic in the minor controls, and the usual synthetic carpeting that may not be
as noble as wool but is far more durable and fire - resistant and much easier to clean.
Designed around the whole retractable hard top concept, the 488 Spider has a spaceframe chassis made of 11 different aluminium alloys combined with other
noble metals such
as magnesium, each one used in a highly specific way.
Designed around the concept of the retractable hard top, the 488 Spider has a spaceframe chassis made of 11 different aluminium alloys combined with other
noble metals, such
as magnesium, each one used in a highly specific way.
As a result, a reduction in
noble metals and stable exhaust emission control have become possible, enabling the use of a clean diesel engine compatible with the post-new long - term regulations in automatic transmission - equipped cars.
The highly dispersive LNT catalyst uses
noble metal particles, such
as platinum, microparticulated to approximately 40 % and arranged effectively.
The
noble metal serves
as a metaphor for the strength of this community of women.
The scientists report there is no special reason to use gold (nor platinum which was used
as the second electrode to complete the circuit)-- other than that these
noble metals happened to be lying about the lab.