Production method of butylene oxide
A technology for the production of butylene oxide, which is applied in the direction of organic chemistry, can solve the problems of strong corrosion of equipment, pollution, large amount of waste water and waste residue, etc., and achieve the effects of high catalyst activity, good technical effect and high product selectivity
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Embodiment 1
[0037] At room temperature and under stirring, 150g of hexadecylamine was added to the solution containing 800ml of H 2 O and 600ml of ethanol in a mixed solution, stirred until the solution was one phase. Add 650 g of ethyl orthosilicate dissolved in 300 ml of ethanol to the above mixed solution, stir for 30 min and then crystallize for 24 h. The resulting solid was then filtered and washed with water. The washed material was dried at 110°C for 12 hours, and then calcined at 550°C for 4 hours to obtain a powder carrier with HMS structure characteristics. Using silica sol as a binder, a HMS molding carrier with a HMS weight percentage of 90% was prepared by using traditional extrusion molding technology.
[0038] Configuration contains 40gTiCl 4 500ml of cumene solution, the above-mentioned prepared catalyst shaped carrier is added to TiCl 4 In the cumene solution, under slow stirring and reflux, the temperature was raised to 150°C, and the reaction was carried out at this...
Embodiment 2
[0042] According to the method of [Example 1], an HMS shaped carrier with a HMS weight percentage of 90% was prepared. Take 100 grams of the shaped carrier prepared above and fill it into a quartz tube reactor, and heat it at 120° C. for 2 hours under dry air conditions. Raise the bed temperature to 200°C, under normal pressure, continuously feed TiCl 4 Dry air at 5.0% by volume for 6 hours. At this temperature and pressure, switch to air purge until the reactor outlet is TiCl-free 4 Check out. Then pass air with a water vapor volume content of 1.0% for 5 hours, and then switch to air to purge the residual water vapor in the system. Dry air with a hexamethyldisilazane volume content of 10.0% was continued for 6 hours. At this temperature and pressure, switch to nitrogen purge until no hexamethyldisilazane is detected at the outlet of the reactor, that is, a titanium-containing porous silica catalyst Ti- HMS.
[0043] The elemental analysis results showed that the weight ...
Embodiment 3
[0045] Add 150 g of fumed silica into 240 g of 25 wt % tetramethylammonium hydroxide aqueous solution, and continue stirring for 30 min to form a solution. Then, the above solution was added to 600 ml of aqueous solution containing 230 g of cetyltrimethylammonium bromide under stirring to form a transparent solution. The above mixed solution was transferred into a stainless steel autoclave lined with polytetrafluoroethylene at 100°C for static crystallization for 3 days. The crystallized product is washed and filtered, dried at 100°C for 24 hours, and calcined at 550°C for 6 hours to obtain a powder carrier with the structural characteristics of MCM-41. The MCM-41 molding carrier with the MCM-41 weight percentage of 90% is prepared by using silica sol as a binder and adopting traditional extrusion molding technology.
[0046] According to the method of [Example 2], the assembly of the active species titanium and the surface hydrocarbyl graft silanization treatment are carried...
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