| |
|
| Molecular formula: |
C5H5Mn(CO)3 |
 |
| Sensibilities towards CMT: |
|
| |
•paraffins>olefins>aromatics
•
lower ON fuels>higher ON fuels
• RON>MON(research
octane number>motor octane number)
•The explosive
resistant efficiency of CMT is about twice as tetraethyl lead
• The gasoline ON boosting result of adding 18mg/l(manganese
content) CMT is almost the same as blending MTBE at 8%~10%(volume)
with gasoline
|
| Its functioning mechanism: |
|
| |
Similar to the tetraethyl lead, CMT can be decomposed
into small particles of active manganese oxides, owing to their
facial function, these small particles effectively incorporate
with those superoxides already existed in the engine, which
reduces the concentration of the superoxides before combustion,
meanwhile cuts a part of chain reactions, then delays the automatic
igniting time, reduces the burning speed, and strengthens the
explosive resistant characters of the gasoline |
| Functions of CMT: |
|
| |
(1)Boost the ON of gasoline
Add one ten-thousandth of CMT(volume) to the gasoline, with
manganese concentration less than 18mg/l(National Standards),the
ON of gasoline can be boosted to 2 to 3 more
(2)Increase
engine driving power, decrease its oil consumption
through the evaluation of NEUTCTI by a fleet of automobiles,
we drew out the conclusion that: unleaded 90#gasoline with CMT
additives can increase engine driving power and decrease its
oil consumption compared with 90#gasoline without CMT additives
(3)Better soluble abilities with MTBE and ethanol
CMT can be used well together with MTBE and ethanol blending
in gasoline, this character provides a convenient way of producing
high ON gasoline, so it can not only boost the ON, but also
avoid using excessive blending quantities of MTBE which would
decrease the engine driving power, then help to meet the National
Standards of "less than 2.7% oxides limitations"
|
| Physical and chemical characters of CMT: |
|
| |
CMT has two states: solid and liquid
Physical and chemical characters of CMT solid |
| |
ITEMS |
UNITS |
CHARACTERS |
| Appearance |
|
Yellow color crystals |
| Manganese |
Weight, % |
26.7 |
| Melting point |
°C |
&asymp≈77 |
| C,H content |
% |
C≈47 |
% |
H≈2.45 |
| Carbonyl infrared analysis |
|
Three carbonyl peaks can be seen
at 1900cm-1 |
| Solubility |
Gasoline |
Easily soluble |
| Compounds |
CMT, % |
> 98 |
Other impurities, % |
< 2 |
|
| |
Physical and chemical characters of CMT liquid
ITEMS |
UNITS |
CHARACTERS |
| Appearance |
|
Yellow liquid |
| Manganese |
g/kg |
53 |
| Density (20°C ) |
g/ml |
0.925-0.965 |
| Freezing point |
°C |
<-25 |
| Flash point |
°C |
>32 |
| Solubility |
Gasoline |
Easily soluble |
| Compounds |
CMT, % |
20 |
| Other supplementary
liquids, % |
80 |
|
| Packaging: |
|
| |
For solid CMT: packed in 20L iron drum, 17kg/drum.
For liquid CMT: packed in 200L metal plating pail, 170Kg/pail,
or packed in specially made storage tank,9T per tank. |
| Storage: |
|
| |
Under cool, dry and ventilation conditions, far
away from fiber sure to close the container when CMT is not
being used. |
CMT-
cyclopentadienyl manganese tricarbonyl
