Preparation method and application of oleophylic type nanoscaled molybdenum disulfide
A nano-molybdenum disulfide, lipophilic technology, applied in chemical instruments and methods, catalyst activation/preparation, nanotechnology and other directions, can solve the problems of high toxicity of raw materials, cumbersome synthesis steps, low catalyst utilization rate, etc., to improve synthesis Economic benefits, suppressing the amount of coke formation, and maintaining the effect of long-term operation
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[0025] A preparation method of lipophilic nano molybdenum disulfide, the method adopts sodium molybdate as molybdenum source, adopts sodium sulfide as sulfur source, adopts hydroxylamine hydrochloride as reducing agent, and adds surfactant to improve the lipophilic type of molybdenum disulfide; comprising The following steps:
[0026] (1) Under the protection of nitrogen, add distilled water, sodium molybdate and hydroxylamine hydrochloride successively in the container, mix and react under heating;
[0027] (2) Continue to add sodium sulfide in the container, react under heating after mixing evenly;
[0028] (3) add tensio-active agent in container, after stirring evenly, drop hydrochloric acid under heating and carry out acidification precipitation;
[0029] (4) After the reaction is completed, it is fully cooled, centrifuged, washed three times with distilled water and ethanol, and dried in a vacuum oven to obtain the final product.
[0030] The method adopts sodium molyb...
Example Embodiment
[0032] Example 1
[0033] This embodiment provides a method for preparing lipophilic nanomolybdenum disulfide, comprising the following steps:
[0034] (1) Add 200ml of distilled water to the container under the protection of nitrogen, then add sodium molybdate and hydroxylamine hydrochloride, wherein the concentration of sodium molybdate in distilled water is 0.2g ml -1 , the molar ratio of sodium molybdate to hydroxylamine hydrochloride is 1:5, mix well and then react, the reaction temperature is 80°C, and the reaction time is 50min;
[0035] (2) Continue to add sodium sulfide to the container, mix evenly and react under heating, the heating temperature is 70°C, the reaction time is 70min, and the molar ratio of sodium molybdate to sodium sulfide is 1:4.5;
[0036] (3) Add 0.01g cetyltrimethylammonium bromide to the container, stir evenly, add hydrochloric acid dropwise under heating until the pH value is 1.0, and carry out acidification and precipitation. The heating tempe...
Example Embodiment
[0039] Example 2
[0040] This embodiment provides a method for preparing lipophilic nanomolybdenum disulfide, comprising the following steps:
[0041] (1) Add 200ml of distilled water to the container under the protection of nitrogen, then add sodium molybdate and hydroxylamine hydrochloride, wherein the concentration of sodium molybdate in distilled water is 0.3g·ml -1 , the molar ratio of sodium molybdate to hydroxylamine hydrochloride is 1:6, mix well and then react, the reaction temperature is 70°C, and the reaction time is 90min;
[0042] (2) Continue to add sodium sulfide to the container, mix evenly and react under heating, the heating temperature is 60°C, the reaction time is 80min, and the molar ratio of sodium molybdate to sodium sulfide is 1:5;
[0043] (3) Add 0.1 g of sodium dodecylbenzenesulfonate to the container, stir evenly, add hydrochloric acid dropwise under heating until the pH value is 0.8, and carry out acidification and precipitation. The heating temp...
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