Chemical Engineering - Petroleum Refinery Engineering - Discussion


Which of the following is an additive used for improving the cetane number of diesel ?

[A]. Tetraethyl lead
[B]. Tetramethyllead
[C]. Ethyl nitrate or acetone
[D]. None of these

Answer: Option A


No answer description available for this question.

Chinna said: (Feb 6, 2015)  
Tetraethyllead (commonly styled tetraethyl lead), abbreviated TEL, is an organolead compound with the formula (CH3CH2)4Pb.

It was mixed with gasoline (petrol) beginning in the 1920s as a patented octane booster that allowed engine compression to be raised substantially, which in turn increased vehicle performance or fuel economy.

Mohan said: (Jun 14, 2016)  
The correct answer is option c.

Girja Nanadan Mauriya said: (Oct 5, 2016)  
Yes, C is the right answer.

Rahul said: (Oct 8, 2016)  
I too think that the option (c) is correct.

Vijay Parmar said: (Nov 19, 2016)  
Alkyl nitrates (principally 2-ethylhexyl nitrate) and di-tert-butyl peroxide are used as additives to raise the cetane number of diesel. So the answer should be C.

Deepak Waliya said: (Jun 22, 2017)  
I think the Correct answer is amyl nitrate.

Nihir said: (Jul 11, 2017)  
Here given answer is wrong. The Right answer is "C" Ethyl nitrate or acetone or alkyl nitrate.

Tetraethyl lead is used as an octane booster as above describe Not a cetane booster.

And Tetramethyllead is also wrong because it is also used as an additive for gasoline. Which was stopped used in refinery due to its hazardous effect? Exposure to tetramethyllead can affect the central nervous system, the kidneys, and the cardiovascular system.

Kannaiah said: (Nov 3, 2018)  
lead is used to increase the octane number in gasoline which means the Aromatics.
For kerosene, the aromatic content should be less so lead should not be used.
Di-tert-butyl peroxide is used without the addition of Nitrogen content.

Ramesh Vishawkarma said: (Jul 23, 2019)  
C option is the right answer and TEL is used in Petrol increases octane number. And Ethyle nitrate or acetone is increased octane number in diesel.

Sujay Raut said: (Aug 8, 2019)  
C is correct answer. Tel add to improve octane number.

Anil said: (Feb 12, 2020)  
Lead mix used to Improve octane number And Nitrate mix used incase improving cetane number. C is the answer.

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