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Cordierite-based diesel particulate filter and preparation method thereof
The invention relates to the technical field of diesel particulate filters, in particular to a cordierite-based diesel particulate filter and a preparation method thereof. The preparation method comprises the following steps: pretreating a waste molybdenum silicide heating rod to obtain mixed powder containing molybdenum oxide and amorphous silicon oxide; mixing and grinding the coal gangue, the magnesium powder and the mixed powder to obtain a fine-particle-size material; preparing a freezing medium; mixing the fine-particle-size material with a freezing medium, and then freezing to obtain a frozen sample; performing vacuum freeze drying on the frozen sample to obtain a dried sample; and sintering the dried sample under a carbon burying condition, and then cooling to obtain the cordierite-based diesel particulate filter. The mass ratio of the mixed powder to the powder with the fine particle size is 0.0938 to 0.8963; through cooperation of molybdenum oxide formed by molybdenum silicide and a freezing medium, the cordierite-based diesel oil particle filter with a three-dimensional net-shaped pore structure and high porosity can be synthesized in one step.
本申请涉及柴油颗粒过滤器技术领域，尤其涉及一种堇青石基柴油颗粒过滤器及其制备方法；所述制备方法包括：对废弃硅化钼加热棒进行预处理，以得到具有氧化钼和无定形氧化硅的混合粉末；对煤矸石、镁粉和混合粉末混合和研磨，以得到细粒径物料；制备冷冻介质；对细粒径物料和冷冻介质混合，后冷冻，以得到冷冻试样；对冷冻试样进行真空冷冻干燥，以得到干燥试样；在埋炭条件下对干燥试样进行烧结，后进行冷却，以得到堇青石基柴油颗粒过滤器；混合粉末和细粒径粉末的质量比为0.0938～0.8963；通过硅化钼形成的氧化钼和冷冻介质的协同配合，可以一步合成具有较高的孔隙率的三维网状孔隙结构的堇青石基柴油颗粒过滤器。
Cordierite-based diesel particulate filter and preparation method thereof
The invention relates to the technical field of diesel particulate filters, in particular to a cordierite-based diesel particulate filter and a preparation method thereof. The preparation method comprises the following steps: pretreating a waste molybdenum silicide heating rod to obtain mixed powder containing molybdenum oxide and amorphous silicon oxide; mixing and grinding the coal gangue, the magnesium powder and the mixed powder to obtain a fine-particle-size material; preparing a freezing medium; mixing the fine-particle-size material with a freezing medium, and then freezing to obtain a frozen sample; performing vacuum freeze drying on the frozen sample to obtain a dried sample; and sintering the dried sample under a carbon burying condition, and then cooling to obtain the cordierite-based diesel particulate filter. The mass ratio of the mixed powder to the powder with the fine particle size is 0.0938 to 0.8963; through cooperation of molybdenum oxide formed by molybdenum silicide and a freezing medium, the cordierite-based diesel oil particle filter with a three-dimensional net-shaped pore structure and high porosity can be synthesized in one step.
本申请涉及柴油颗粒过滤器技术领域，尤其涉及一种堇青石基柴油颗粒过滤器及其制备方法；所述制备方法包括：对废弃硅化钼加热棒进行预处理，以得到具有氧化钼和无定形氧化硅的混合粉末；对煤矸石、镁粉和混合粉末混合和研磨，以得到细粒径物料；制备冷冻介质；对细粒径物料和冷冻介质混合，后冷冻，以得到冷冻试样；对冷冻试样进行真空冷冻干燥，以得到干燥试样；在埋炭条件下对干燥试样进行烧结，后进行冷却，以得到堇青石基柴油颗粒过滤器；混合粉末和细粒径粉末的质量比为0.0938～0.8963；通过硅化钼形成的氧化钼和冷冻介质的协同配合，可以一步合成具有较高的孔隙率的三维网状孔隙结构的堇青石基柴油颗粒过滤器。
Cordierite-based diesel particulate filter and preparation method thereof
一种堇青石基柴油颗粒过滤器及其制备方法
LIU ZHENYING (author) / HUANG SHOUWU (author) / WANG KAI (author) / PAN TINGTING (author) / DONG SHAOFENG (author) / WANG QIAOYUAN (author) / SONG YIJIA (author)
2024-09-13
Patent
Electronic Resource
Chinese
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