What is Catalyst: Definition and 60 Discussions

Catalysis () is the process of altering the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the catalyzed reaction hence they are unchanged after the reaction. Often only very small amounts of catalyst are required. The global demand for catalysts in 2010 was estimated at approximately US$29.5 billion.

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  1. F

    A catalyst changes the mechanism of a reaction

    I know that this one can't be a. or c. which is true but, i think its either b. or d., does a catalyst change the mechanism of a chemical reaction ? Which statement is not correct regarding the function of a catalyst? a. A catalyst lowers the activation energy. b. A catalyst changes...
  2. P

    What does a catalyst do in a chemical reaction?

    What does a catalyst in a chemical reaction? I read wikipedia and the information is not very detailed to satisfy me. It basically says:
  3. T

    Could I speed up the reaction of electrlysis by using a catalyst?

    Could I speed up the reaction of electrlysis by using a catalyst?
  4. F

    Rejuvenation catalyst for Petrobond (R)

    I was wondering if you guys could help me out here. I would like to know what the rejuvenation catalyst for Petrobond (R) foundry sand is, if there is one at all.:confused: If you guys could get me the answer before the end of the day, I would appreciate it. :wink:
  5. S

    Can We Create a Hydrolysis Catalyst for Water Separation?

    Shall it ever be possible (regarding chemistry rules) to make an alloy which acts like a catalyst in separation of hydrogen and oxygen in water (i.e. drasticaly reduces the amount of electricity needed to do hydrolysis)? (PS: imagine someone grabs a piece of such material with bare hands...)...
  6. I

    Current Data for the world records most (efficient) Catalyst reaction

    Does anybody have the current Data for the world records most (efficient) Catalyst reaction to date?
  7. G

    Mn Catalyst for Asymmetric Epoxidation

    For lab we used an Mn Catalyst for epoxidation of trans-B-methyl styrene. One of the problems is that we have to figure out which enantiomer of the trans-B-methylstyrene epoxide is formed by looking at the H NMR. I have never looked at an NMR before to try to figure out which enantiomers were...
  8. S

    Ester formation & amount of acid catalyst needed

    Hi I've been reading a lot about esters and have the general idea but I am not sure about exact amounts of acid catalyst needed. say the following experiment was tro be carried out to form an ester R-C=O(O-R2) *X moles of R-C=O(OH) *10X moles of R2-C-OH *How much H2SO4 would be needed? i...
  9. D

    Which substance acted as a catalyst?

    1st:( I'm sorry its a bit long) 1.0g of Zn in reacted with 50 cm3 of 1.0 mole/dm3 of H2SO4 to check the effect of some chemicals or elements on the reaction. 4 exp. are carried out in each exp. the time to collect 50cm3 of hydrogen was recorded. 1st exp. was done with nothing added to reaction...
  10. E

    Can H2O Be Split into Ions Using a Catalyst?

    somebody emailed me the following: "I know that H2O2 (Hydrogen Peroxide) can be reacted with the enzyme catalase to produce H20 and O2 (water and oxygen). H2O2 is found in blood and cells which is why it foams when you put it on a cut. But what I want to know, is can I achieve this...
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