Methyltretbutyl ether (MTBE), which is a colorless flammable liquid with a characteristic odor, is considered to be one of the most widely used means for increasing the level of octane number. MTBE is characterized by a high octane number and non-toxicity. With the addition of 10-15% MTBE in gasoline, the growth of the octane number is about 6-12 units. Most high-octane gasoline is produced using this or other similar additives of the ether class. The disadvantages of MTBE include its high volatility and the possibility of evaporation from gasoline in hot weather.
Methyltretbutyl ether (MTBE), which is a colorless flammable liquid with a characteristic odor, is considered to be one of the most widely used means for increasing the level of octane number. MTBE is characterized by a high octane number and non-toxicity. With the addition of 10-15% MTBE in gasoline, the growth of the octane number is about 6-12 units. Most high-octane gasoline is produced using this or other similar additives of the ether class. The disadvantages of MTBE include its high volatility and the possibility of evaporation from gasoline in hot weather.
https://www.tandfonline.com/doi/full/10.1080/10916466.2015.1050506?src=recsys&
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Besides Methyltretbutyl ether (MTBE) ,
at least the following methods may work:
1) Through the disproportionation process, make alkane have more branches
2) add some aromatics (need to be within the regulations)
3) New additives
There are two ways to produce gasoline with high octane values: a complex technological method, which causes a high cost of the resulting product, and a simpler and cheaper one — by adding special additives (anti-detonators). So, from AI-76 it is possible to receive easily AI-92, and from AI-92-AI-95. Let's see how this can be done.
One of the most widely used currently means to increase the level of octane number is considered to be methyltretbutyl ether (MTBE), which is a colorless flammable liquid with its characteristic smell. MTBE is characterized by a high octane number and non-toxicity. When adding 10-15% MTBE to gasoline, the growth of the octane number is about 6-12 units. Most high-octane gasoline is produced using this or other similar additives of the essential class. The disadvantages of MTBE include its high volatility and the possibility of evaporation from gasoline in hot weather.
In addition to catalytic processes, special additives are used to produce high-octane gasoline.
The most effective of these additives is tetraethyl lead Pb (C2H5)4. However, it is very poisonous, and also poisons special catalytic afterburners of fuel that purify car exhaust gases.
The least harmful additive to gasoline is methyltretbutyl ether CH3-O-C (CH3)3, which has an octane number of 117. This ether is widely used in Europe and in Russia. However, its share in gasoline is large (5-12%), and requires mass production of this product.
It is considered promising to use ethyl alcohol (octane number 105) as a motor fuel, but it is still more expensive than gasoline.
MTBE is a kind of oxygenates used as fuel additives into
gasoline. It helps fuel burn easily, and it has an antiknocking property according to its increase in oxygen content and boost in its octane number. Cancerous health problems have appeared due to high doses of MTBE through ingestion andinhalation according to the studies. Besides, the use of MTBE is prohibited in a number of countries due to the problem of groundwater contamination in case of
leaks. The concentration of MTBE is normatively limited at a relatively low level
15 by weight percent according to GOST 32513. Therefore, the authors used the concentration of MTBE in this research from the percentage of 14 to 15 by weight percent according to GOST 32513.
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