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Preparation method of MoSi2@ZrO2 core-shell structure
The invention discloses a preparation method of a MoSi2@ZrO2 core-shell structure. The method comprises the following steps: (1), adding MoSi2 powder and SDS into a beaker, carrying out mechanical ultrasonic stirring, and using water or alcohol as a dispersion medium; (2), after dispersing for a certain time, adding a zirconium source into a suspension, and dropwise adding an alkaline solution NH3.H2O or NaOH until the pH value is between 7 and 14; continuously performing stirring for a certain time until the materials are uniformly mixed; (3), placing the prepared suspension liquid in a reaction kettle, the curing time being 12-48 h, and the curing temperature being 160-220 DEG C; performing heating by using a drying oven, and keeping the temperature after the suspension liquid reaches acertain temperature at a certain heating rate; (4), after hydrothermal reaction synthesis, performing filtering, washing, drying and sieving to obtain powder; (5), calcining the prepared powder in calcining equipment for 1-6 hours, the heat preservation temperature being 300-400 DEG C; and (6), obtaining a MoSi2@ZrO2 core-shell structure through the steps, and the volume fraction of the synthesized ZrO2 powder being 10-30 vol%. A hydrothermal method is adopted, no pollution is caused, the requirement for equipment is lowered, and the method is environmentally friendly.
本发明公开了一种MoSi2@ZrO2核壳结构制备方法，包括以下步骤，(1)、将MoSi2粉、SDS加入烧杯中机械超声搅拌，使用水或酒精作为分散介质；(2)、分散一定时间后，向悬浮液中加入锆源，滴加碱性溶液NH3·H2O或者NaOH,至PH在7～14之间；继续搅拌一定时间，至混合均匀；(3)、将制备好的悬浮液置于反应釜中，固化时间12～48h，固化温度为160～220℃；使用烘箱加热，通过一定的升温速率使得悬浮液达到一定温度后保温；(4)、水热反应合成后，通过过滤，洗涤，烘干，过筛，得到粉体；(5)、将制备好的粉体在煅烧设备中煅烧1～6h,保温温度300～400℃；(6)、经上述步骤，得到MoSi2@ZrO2核壳结构，合成ZrO2粉的体积分数为10～30vol％。本发明采用水热法，无污染，降低了设备的要求，对环境友好。
Preparation method of MoSi2@ZrO2 core-shell structure
The invention discloses a preparation method of a MoSi2@ZrO2 core-shell structure. The method comprises the following steps: (1), adding MoSi2 powder and SDS into a beaker, carrying out mechanical ultrasonic stirring, and using water or alcohol as a dispersion medium; (2), after dispersing for a certain time, adding a zirconium source into a suspension, and dropwise adding an alkaline solution NH3.H2O or NaOH until the pH value is between 7 and 14; continuously performing stirring for a certain time until the materials are uniformly mixed; (3), placing the prepared suspension liquid in a reaction kettle, the curing time being 12-48 h, and the curing temperature being 160-220 DEG C; performing heating by using a drying oven, and keeping the temperature after the suspension liquid reaches acertain temperature at a certain heating rate; (4), after hydrothermal reaction synthesis, performing filtering, washing, drying and sieving to obtain powder; (5), calcining the prepared powder in calcining equipment for 1-6 hours, the heat preservation temperature being 300-400 DEG C; and (6), obtaining a MoSi2@ZrO2 core-shell structure through the steps, and the volume fraction of the synthesized ZrO2 powder being 10-30 vol%. A hydrothermal method is adopted, no pollution is caused, the requirement for equipment is lowered, and the method is environmentally friendly.
本发明公开了一种MoSi2@ZrO2核壳结构制备方法，包括以下步骤，(1)、将MoSi2粉、SDS加入烧杯中机械超声搅拌，使用水或酒精作为分散介质；(2)、分散一定时间后，向悬浮液中加入锆源，滴加碱性溶液NH3·H2O或者NaOH,至PH在7～14之间；继续搅拌一定时间，至混合均匀；(3)、将制备好的悬浮液置于反应釜中，固化时间12～48h，固化温度为160～220℃；使用烘箱加热，通过一定的升温速率使得悬浮液达到一定温度后保温；(4)、水热反应合成后，通过过滤，洗涤，烘干，过筛，得到粉体；(5)、将制备好的粉体在煅烧设备中煅烧1～6h,保温温度300～400℃；(6)、经上述步骤，得到MoSi2@ZrO2核壳结构，合成ZrO2粉的体积分数为10～30vol％。本发明采用水热法，无污染，降低了设备的要求，对环境友好。
Preparation method of MoSi2@ZrO2 core-shell structure
MoSi2@ZrO2核壳结构制备方法
ZHANG JIANJUN (author) / LIU KAOBIN (author) / WEI XUELONG (author) / LIANG BINGLIANG (author) / CHEN WEIHUA (author) / HE WEN (author) / OUYANG SHENG (author) / AI YUNLONG (author)
2020-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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