Recently, a method for homogeneously catalyzing the preparation of biodiesel by solubilizing and easily separating ionic liquids completed by researchers of the Guangzhou Institute of Energy Research, Chinese Academy of Sciences was authorized by the national invention patent. Biodiesel does not contain sulfur and aromatic hydrocarbons, high cetane number, and good lubrication. It is a high-quality clean diesel fuel. Researchers have used ionic liquids with strong plasticity to develop a ionic liquid that is solid at room temperature, melts to a temperature above 80°C, and is soluble in oils and short-chain alcohols. In the preparation of biodiesel, the ionic liquid serves as both a catalyst and a solubilizing agent for the reaction substrate, so that the reaction system is in a state of “one phase†that is compatible with each other, thereby facilitating the reaction. According to reports, after the reaction is completed, the ionic liquid crystals are precipitated by cooling, and the solubilization effect disappears. The reaction system is changed to use ionic liquid as the “solid phaseâ€, biodiesel, and a small amount of unreacted oil and fat raw materials are dissolved. The "oil phase" and the "alcoholic phase" consisting of methanol and glycerol are three different phases. After the reaction, the system is easily separated by filtration and decantation, which solves the problems in the prior art that the ionic liquid has poor solubility to the substrate and the ionic liquid needs distillation recovery. The invention has the advantages of simple and convenient operation, rapid reaction speed, high conversion rate, easy separation and purification of the product, catalyst ionic liquid can be reused, low corrosion, no environmental pollution, can rapidly prepare biodiesel, can greatly increase production efficiency, and reduce production cost. , has a good industrial application prospects.
Eva Mat is a kind of foam mat for EVA sport mat, EVA Exercise Mat, and Eva Training Mat, made from Eco-friendly, high density, closed cell,
non-smell and non-toxic EVA foam material.
The EVA Mat is offered in either 60cm x
60cm size or 100cm x 100cm size. 60cm x 60cm size. With interlocking edges, the
mats can be easy to connect together without any loose.
60cm x 60cm EVA mat is normally applied in
room, or gym. It is easy to store, more popular for the personal exercise
lovers to use at home. Also it can be a good protection for home flooring if
you are intended to set up a heavy training equipment in your house.
100cm x 100cm EVA mat is also called Martial Arts Mat,
Taekwondo mat, Karate mat, Judo mat, Jiu Jitsu mat and Aikido mat, cause it is
normally applied in dojo for Taekwondo, Karate, Judo, Jiu Jitsu and Aikido training.
Also the mat is reversible with double colors, which forms a standard size
flooring for training.
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