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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

Inactive Publication Date: 2016-07-06
台州天天环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for preparing lipophilic nanomolybdenum disulfide, which solves the problems of cumbersome synthesis steps, strong toxicity of raw materials and low utilization rate of catalysts in the existing vulcanization series catalysts

Method used

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preparation example Construction

[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...

Embodiment 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 temperature is 40°C, and ...

Embodiment 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 temperature is 30° C., a...

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Abstract

The invention discloses a preparation method and application of oleophylic type nanoscaled molybdenum disulfide, and belongs to the technical field of inferior heavy oil suspended bed hydrocracking.The method comprises the following steps that under the protection of nitrogen, distilled water, sodium molybdate and hydroxylamine hydrochloride are sequentially added into a container, mixed to be uniform and then subjected to a reaction under the heating effect; sodium sulfide continues to be added into the container, mixed to be uniform and subjected to a reaction under the heating effect; a surface active agent is added into the container, stirred to be uniform and subjected to acidification precipitation by dropwisely adding hydrochloric acid under the heating effect; after the reactions are ended, sufficient cooling and centrifugal are performed, washing is performed with distilled water and ethyl alcohol three times, and drying is performed in a vacuum drying box, and the oleophylic type nanoscaled molybdenum disulfide is obtained.The obtained oleophylic type nanoscaled molybdenum disulfide is high in molybdenum metal raw material conversion rate, no poisonous or harmful raw materials are involved, and the oleophylic type nanoscaled molybdenum disulfide can remarkably restrain the green coke amount in the heavy oil suspended bed hydrocracking technology.

Description

technical field [0001] The invention relates to the technical field of direct coal hydrogenation liquefaction / coal tar hydrocracking / inferior heavy oil suspended bed hydrocracking, and in particular to a preparation method and application of lipophilic nano molybdenum disulfide. Background technique [0002] Suspension bed hydrocracking of heavy oil is the hydrocracking of heavy oil under high temperature and high hydrogen pressure environment. A small amount of hydrogenation catalyst reacts with heavy oil and hydrogen to form a complete mixed flow state. The function of the catalyst is mainly to inhibit the coke formation of heavy oil during the reaction, thereby improving the operating cycle of the device. As my country's dependence on crude oil imports increases and the proportion of heavy oil in crude oil gradually increases, how to deal with these heavy oils with high metals, high asphaltene, and high sulfur and nitrogen has become an urgent problem to be solved in the ...

Claims

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Application Information

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IPC IPC(8): B01J27/051C10G47/06B82Y30/00B82Y40/00
CPCC10G47/06B82Y30/00B82Y40/00B01J27/051B01J37/031B01J37/16C10G2400/02C10G2400/04C10G2300/70B01J35/40
Inventor 邓文安戴鑫李传吴波杜峰李庶峰谢海华崔敏王玮瑶李庆铭
Owner 台州天天环保科技有限公司
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