Platinum (Pt) is a star catalyst that is now widely used in electrode reactions. Very recently, growing experimental evidences have shown that injection of electrons to the Pt catalyst could improve the surface catalytic reactivity to reactant (e.g. the CH 3 OH). However, the underneath ...
A‘catalyst’ is a substance that accelerates a chemical reaction, and within a catalytic converter, there are two types of catalyst. The first is a reduction catalyst which uses platinum and rhodium within the honeycomb to reduce NOx emissions. NOx is produced by nitrogen oxide and nitrogen dio...
The catalystfacilitates the chemical change, but does not participate in the chemical reaction, and remains unchanged. Eliot compares the mind of the poet to the shred of platinum, which will "digest and transmute the passions which are its material". Sense of the past by Lionel Trilling | Li...
To understand the other catalyst at play here, investors should know exactly where the demand for platinum and palladium comes from. Importantly, much of the demand for platinum used to come from jewelers and traditional automakers. In recent times, this means that platinum prices have struggled a...
Why do some electrochemical cells employ inert electrodes such as platinum? Why is sulfuric acid used instead of hydrochloric acid in the dehydration of cyclohexanol? why the solutions should not put back into the bottle from which they came from?
There are certain chemical catalysts, like platinum, that can break hydrogen atoms apart into their constituent protons and electrons. And there are also substances called electrolytes that only let protons pass through them while blocking electrons. So if we combine a catalyst with an electrolyte, ...
PEM fuel cells consist of three main parts: the anode, the cathode, and the proton exchange membrane. The process begins when hydrogen gas is fed into the anode side of the fuel cell. Here, a catalyst (usually made of platinum) helps split the hydrogen molecules into protons (positively ch...
It is sometimes bunched together with platinum and palladium as “white metals” due to their similar appearance. Nonetheless, the lustrous hue of silver is unmistakable and recognized all over the world. It is a fairly dense metal, but less so than its cousins palladium, gold, and platinum ...
Silver is very rare and, along with gold and six platinum group metals, belongs to a group known as precious metals. For thousands of years, people have acquired silver as a store of value. What Is Silver Used For? Use of SilverDescription Jewelry Silver is beautiful, lustrous, and workabl...
Palladium is chemically stable and like platinum has excellent catalytic properties so it can be used as a substitute for the more expensive platinum in catalytic converters. Rhodium (Rh): Rhodium, another highly-active catalyst, is widely used in vehicle emission control systems. Rhodium is also ...