1-Tetradecene, with a molecular formula of C14H28 and a molecular weight of 196.37, is a colorless, transparent liquid with a density of 0.77 that of water and a slight hydrocarbon odor. 1-Tetradecene is stable at room temperature and pressure, but flammable when heated or oxidized. Combustion will emit irritating smoke, so care should be taken to avoid contact with oxidants. As an olefin compound containing fourteen carbon atoms, 1-Tetradecene has a high degree of molecular unsaturation and reactivity and is an important intermediate in organic synthesis.
1-Tetradecene is a long-chain olefin with a wide range of applications. It is usually used as a raw material for organic synthesis to make other organic compounds or polymer materials.
(1) 2-Acrylamido-Tetradecanesulfonic acid can be synthesized using acrylonitrile, 1-Tetradecene and fuming sulfuric acid as raw materials in the presence of an appropriate amount of a dehydrating agent. The structure of the product was determined by infrared spectroscopy, nuclear magnetic resonance and elemental analysis. The results showed that the molecule contains "C=C", a hydrophobic long-chain alkyl group and a hydrophilic amide group and sulfonic acid group, and has the structural characteristics of a surfactant [1]. Acrylamide and acrylic acid are used as raw materials, dissolved in deionized water, adjusted to pH 6.5-7.5 with NaOH aqueous solution, added with the above-prepared 2-acrylamido-tetradecane sulfonic acid and sodium dodecyl sulfate, stirred and dissolved, nitrogen deoxygenated for 0.5h, then added with ammonium persulfate and sodium bisulfite, reacted in a water bath at 35℃ for 2h, and vacuum dried to obtain a hyperbranched hydrophobic associating polymer. The method is simple to operate, efficient, high in product yield, good in viscosity increasing performance, critical associating concentration of 750mg/L, good in temperature resistance, and still has a viscosity retention rate of 62.2% when heated to 85℃.
(2) In an aqueous solution of N,N-dimethylacetamide (DMA), palladium chloride (PdCl2) as a catalyst and copper chloride (CuCl2) as a co-catalyst can catalyze the selective oxidation of 1-tetradecene to 2-tetradecone, with a yield of 93%.
(3) 1-Tetradecene can be used as a raw material for preparing early strength polycarboxylic acid water reducer. The water reducer also includes the following raw materials: modified orange peel residue, acrylic acid, methacrylic acid, 30% hydrogen peroxide, triethanolamine, acrylonitrile, maleic anhydride, isopentanol polyoxyethylene ether, methyl allyl polyoxyethylene ether, etc. The water reducer is modified by using orange peel residue to prepare a concrete water reducer, which can cooperate with polycarboxylic acid water reducer. After being added to concrete, it can effectively inhibit the shrinkage of concrete components and the generation of cracks. In other words, the water reducer can improve the early strength and meet the requirements of high-strength concrete. At the same time, it has a high water reduction rate, a low addition amount, good dispersion stability, no water seepage and stratification, and does not affect the strength of concrete.
(4) 1-Tetradecene can be used as a pore expander to prepare mesoporous zirconia film. The whole process adopts a simple mixing system. The systems are completely miscible. There is no need to consider the appearance of the system microemulsion structure, and there is no need for the participation of other auxiliary agents or dispersants. It has the advantages of simple operation and high repetition rate, and can be suitable for large-scale industrial production.
(5) Poly α-olefin lubricant base oil (PAO) is an important type of synthetic hydrocarbon lubricating fluid. Compared with mineral lubricant base oil, PAO is obtained by chemical synthesis and has excellent low-temperature properties such as low pour point, high flash point, no sulfur in the oil, and less precipitation after oxidation. It has broad research prospects and development space among important synthetic hydrocarbon oils. Based on this, with the goal of synthesizing a "new generation of poly α-olefin" lubricant base oil with excellent performance, the catalyst AlCl3 was used to catalyze the polymerization reaction of 1-dodecene and 1-tetradecene mixed olefins to obtain a mixture of poly α-olefins (PAO) with different polymerization degrees. The mixture is a lubricant base oil component with a high viscosity index (158~170), medium viscosity (V100℃=18~29mm2/s), low pour point (PP=-16~-34℃), and moderate molecular weight (M=715~875).
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