Methylcyclopentadienyl Manganese Tricarbonyl Structure type:：

        Over the years of discovery and practice,Methylcyclopentadienyl Manganese Tricarbonyl（Referred to as"MMT）It is one of the most effective gasoline antidetonators, and is twice as efficient as tetraethyl lead. The addition of the manganese antidetonator to gasoline will also reduce vehicle emissions while increasing the octane value of gasolineNOx、CO、CO_２、HCThe emission of harmful gases, and the improvement of vehicle exhaust trimetering.
There are several ways to increase gasoline octane Numbers:
        (1)Process method, which is to improve the refining technology, such as catalytic cracking, catalytic reforming, alkylation, isomerization etc.
        (2) The adjustment is legal, which is the combination of high octane, such as methyl tertiary butyl ether (MTBE), alcohol, etc.
        (3) Additive method, which is the addition of gasoline antidetonant.
       Process method is a major means of improve the octane number, but there is a big investment, limited resources, and change the distillation range of gasoline, often not easy to achieve the best combination of production and lack of appropriate flexibility. In particular, it is difficult or costly to achieve the target by simply adopting the process method when producing high octane gasoline. With the use of MTBE for gasoline, the MTBE is being used in a large number of ways.
        (1) Add the volume（10 ～ 15%），High cost and poor economics;
        (2)MTBE Low heat values, large scale additions make the vehicle's dynamic performance impossible to fully perform;
        (3)MTBE For oxygen-containing compounds, the emission of nitrogen oxide in exhaust pollutants increases.
       after MTBE Parts of the United States have banned the use of MTBE in gasoline, which causes groundwater pollution in California. It is proved by practice that adding antidetonator is an effective way to improve the economy of gasoline anti-explosion.
       Over the years, people have tried many metals and non-metallic antiknock, confirmed by practice, manganese base of organic compounds is one of the good quality of antiknock, as people rushed to the dope. In terms of cost, the cost is lowest and the economy is convenient compared with the process method and MTBE. Therefore, it is widely used in oil refineries both at home and abroad. Currently, the manganese base gasoline antidetonator is the best additive for producing high grade unleaded gasoline, and it is widely used in various oil refineries both at home and abroad.
       On December 6, 2006, the national standardization committee approved the issue“GB17930-2006National standards for "automotive gasoline"”, formally put forward“Manganese is used in gasolineMethylcyclopentadienyl Manganese Tricarbonyl（MMT）The total manganese content of the form shall not be added to other types of manganese additives. As a result, non-mmt's other manganese additives will phase out the history of fuel additives in the near future.