HC plastic mesh information: Citric acid and butanol as raw materials, nano-CeO: Synthesis of non-toxic as catalyst Plasticizer Tributyl citrate vinegar. Of the amount of catalyst, molar ratio of acid to alcohol, reaction time, reaction temperature influence the results, synthetic products on the IR. The experimental results show that nano-CeO: catalytic synthesis of citric acid Three small vinegar optimal conditions for n (citric acid)): n (n-butyl alcohol) = 1:4.5, catalyst 2.0% citric acid, the reaction time is 3.5h, the reaction temperature is 106-1400C, vinegar rate up to 93.47% of the product purity> 98.8%.
Keywords: Nano CeO2; catalysis; synthesis; non-toxic Plasticizer ; Small vinegar citrate (TBC)
Citrate Ding vinegar (Tri-n-butylCitrate short TBC) is non-toxic and excellent performance, uses a wide range of plasticizers, can be used for PVC, vinyl chloride copolymers, cellulose resin plasticized with good compatibility, high efficiency plasticized, non-toxic and volatile, etc, and cold, light and good water resistance, and resistance to mildew resistance in resin can be used for food packaging and preparation of medical supplies is TBC Another non-toxic plasticizer acetyl tributyl citrate important raw material for vinegar. At present, citric acid, vinegar and three small plasticizer has been the U.S. Food and Drug Administration (FDA) approved for food packaging, medical instruments, Children's toys Plastic Products In the field to replace the carcinogenic effect of phthalate esters, plasticizers, China has drawn the corresponding laws and regulations restrict the phthalate esters, the use of plasticizers. Promote the use of TBC such "green" products, is Plastic Products Additives market development, with excellent market prospects. So the research, screening and efficient method of synthesis is still TBC popular field of study abroad. At present, the main use of proton acid, solid super acid, heteropoly acid, inorganic salt for catalytic synthesis of TBC, TBC synthesis of rare earth compounds have been reported, Pan Huifang and other rare earth oxides on the catalytic activity of all kinds have been studied, Meng Xianchang so successful with nanometer solid superacid synthesis TBC, but the use of nano-rare earth oxide catalysts no literature reports of domestic synthetic TBC, author of nano CeO: for esterification reaction catalyst, tributyl citrate vinegar, use less of the catalyst, time is short, the product easy to separate color light, unitary purpose of producing high The catalyst can be reused, non-corrosive, environmental pollution, has a certain value.
1 Experimental section 1.1 Instruments and reagents PH meter (pHS-3C type, Shanghai Albert Instrument Factory), digital Abbe refractometer (WAY-2S type, Shanghai Precision Scientific Instrument Co., Ltd. physical Optical Instrument Factory), Fourier transform infrared spectroscopy (ThermoNicolet360, United States ), powerful electric mixer (JB90-D, Heze City petrochemical plant equipment school), thermostat heating units (MYB-type, test equipment company in Tianjin in North China). citric acid (AR, China Medicine Group Shanghai Chemical Reagent Company ), butanol (AR, China Medicine Group Shanghai Chemical Reagent Company), nano-Ce02 (20-50nm, Anhui University Institute of radius of nano-materials).
1.2 tributyl citrate synthesis vinegar I am a professional writer from Cheap On Sales, which contains a great deal of information about $keyword_li, welcome to visit!
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