WO2025109873A1 - 三酸化モリブデン微粒子の製造方法 - Google Patents

三酸化モリブデン微粒子の製造方法 Download PDF

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Publication number
WO2025109873A1
WO2025109873A1 PCT/JP2024/035082 JP2024035082W WO2025109873A1 WO 2025109873 A1 WO2025109873 A1 WO 2025109873A1 JP 2024035082 W JP2024035082 W JP 2024035082W WO 2025109873 A1 WO2025109873 A1 WO 2025109873A1
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molybdenum trioxide
fine particles
molybdenum
producing
microparticles
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French (fr)
Japanese (ja)
Inventor
秀之 村田
滉生 平林
直人 矢木
建軍 袁
彰志 今村
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DIC Corp
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DIC Corp
Dainippon Ink and Chemicals Co Ltd
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Priority to CN202480053703.2A priority Critical patent/CN121712720A/zh
Priority to JP2025559071A priority patent/JP7846471B2/ja
Publication of WO2025109873A1 publication Critical patent/WO2025109873A1/ja
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G39/00—Compounds of molybdenum
    • C01G39/02—Oxides; Hydroxides

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  • the present invention relates to a method for producing fine molybdenum trioxide particles.
  • Molybdenum trioxide microparticles have a wide range of applications, including as a catalyst, an additive for steel and corrosion-resistant alloys, a raw material for molybdenum metal and compounds, and an antibacterial and antiviral agent.
  • Molybdenum trioxide melts at a temperature of 800° C. or higher and has a sublimable property, so that the sublimated molybdenum trioxide can be solidified and granulated by cooling the sublimated molybdenum trioxide gas or by contacting it with air or an inert gas at 800° C. or lower (for example, Patent Document 1).
  • molybdenum trioxide absorbs electromagnetic waves such as microwaves well, and is quickly heated and heated to vaporize, and that since the atmosphere is not heated by the electromagnetic waves, vaporization is immediately suppressed by cutting off the input of electromagnetic wave energy, so that the amount of vaporization of the molybdenum trioxide can be controlled, and as a result, molybdenum trioxide fine particles can be efficiently produced. That is, in this embodiment, heating by electromagnetic wave irradiation can be easily controlled by ON/OFF control and irradiation intensity control, and selective heating of molybdenum trioxide is possible without heating the atmosphere. Therefore, the object of this embodiment is to provide a method for producing molybdenum trioxide fine particles that can produce molybdenum trioxide fine particles with a high recovery rate even with low energy consumption.
  • the present embodiment is based on the findings of the present inventors, and the means for solving the above problems are as follows.
  • a method for producing molybdenum trioxide fine particles characterized in that the frequency of the electromagnetic waves is in the range of 300 to 30,000 MHz.
  • [2] The method for producing molybdenum trioxide fine particles according to [1], wherein the frequency of the electromagnetic waves is in the range of 900 to 3000 MHz.
  • [3] The method for producing molybdenum trioxide fine particles according to [1] or [2], wherein 0.1 to 50% by weight of a metal oxide is mixed with the molybdenum trioxide.
  • [4] The method for producing molybdenum trioxide microparticles according to [3], wherein the metal oxide is at least one selected from the group consisting of aluminum hydroxide, boehmite, aluminum oxide, silica, titanium oxide, and iron oxide.
  • [5] The method for producing molybdenum trioxide microparticles according to any one of [1] to [4], wherein the average particle size of the molybdenum trioxide microparticles is 10 nm to 100 ⁇ m.
  • [6] The method for producing molybdenum trioxide fine particles according to any one of [1] to [5], wherein the molybdenum trioxide fine particles have a BET specific surface area of 0.01 m 2 /g to 500 m 2 /g.
  • [8] The method for producing molybdenum trioxide fine particles according to any one of [1] to [7], wherein the molybdenum trioxide fine particles further contain a ⁇ crystal structure.
  • a method for producing molybdenum trioxide microparticles can be provided that allows for easy ON/OFF control and selective heating, making it possible to produce molybdenum trioxide microparticles with a high recovery rate even with low energy consumption.
  • FIG. 1 is a schematic diagram of an example of an apparatus used for producing molybdenum trioxide fine particles according to one embodiment of the present invention.
  • a method for producing molybdenum trioxide fine particles includes the following two steps: (I) vaporization step: a step of irradiating molybdenum trioxide with electromagnetic waves to heat and vaporize the molybdenum trioxide; and (II) granulation step: a step of cooling the vaporized molybdenum trioxide in an unheated atmosphere to granulate the molybdenum trioxide fine particles.
  • the frequency of the electromagnetic waves is in the range of 300 to 30,000 MHz.
  • the method for producing molybdenum trioxide microparticles of this embodiment can be suitably carried out, for example, using the molybdenum trioxide microparticle production apparatus 10 shown in Figure 1.
  • FIG. 1 is a schematic diagram of an example of an apparatus used to manufacture molybdenum trioxide microparticles according to this embodiment.
  • An apparatus capable of irradiating the electromagnetic waves (sometimes referred to as an "electromagnetic wave irradiation apparatus"; not shown) is disposed above the chamber 1.
  • the molybdenum trioxide microparticle manufacturing apparatus 10 includes a chamber 1 that irradiates the molybdenum trioxide placed in a container 2 with electromagnetic waves generated by the electromagnetic wave irradiation apparatus to heat the molybdenum trioxide (hereinafter sometimes referred to as "electromagnetic wave heating") and vaporize the molybdenum trioxide, and a particle recovery device 3 connected to the chamber 1 and that converts the molybdenum trioxide vapor vaporized by the irradiation into microparticles.
  • the chamber 1 and the particle recovery device 3 are connected.
  • the chamber 1 has an outside air intake 6 disposed at the left end, and the particle recovery device 3 has an exhaust 8 disposed at the right end.
  • An exhaust device (not shown), which is a blowing means, is connected to the intake 6.
  • the manufacturing apparatus 1 may have an external cooling device (not shown), which makes it possible to arbitrarily control the cooling conditions of the molybdenum trioxide vapor generated from the chamber 1.
  • the molybdenum trioxide fine particles of the present embodiment contain an aggregate of primary particles including a crystal structure of molybdenum trioxide.
  • the molybdenum trioxide fine particles of the present embodiment can also be called the molybdenum trioxide powder of the present embodiment.
  • the crystal structure may be, for example, an ⁇ crystal structure, a ⁇ crystal structure, or may include both the ⁇ crystal structure and the ⁇ crystal structure.
  • the molybdenum trioxide fine particles of the present embodiment have better reactivity with other compounds, for example, sulfur, than conventional molybdenum trioxide fine particles.
  • the ⁇ crystal structure of molybdenum trioxide can be confirmed by the presence of a peak of the (021) plane of the ⁇ crystal of MoO3 (2 ⁇ : around 27.32°, No. 166363 (Inorganic Crystal Structure Database, ICSD)).
  • the ⁇ crystal structure can be confirmed by the presence of a peak belonging to the (011) plane of the ⁇ crystal of MoO3 in a profile obtained by powder X-ray diffraction (XRD) using Cu-K ⁇ rays as the X-ray source.
  • XRD powder X-ray diffraction
  • the above peak is the peak at around 2 ⁇ : 23.01°, No. 86426 (Inorganic Crystal Structure Database, ICSD).
  • the average particle diameter of the molybdenum trioxide microparticles of this embodiment is preferably 10 nm to 100 ⁇ m.
  • the average particle diameter of the molybdenum trioxide microparticles of this embodiment can be measured, for example, by a known particle size distribution measurement method.
  • the average particle diameter of the molybdenum trioxide microparticles of this embodiment is more preferably 10 nm or more, and further preferably 20 nm or more. In addition, it may be 100 ⁇ m or less, 10 ⁇ m or less, or 1 ⁇ m or less.
  • the average particle size of the molybdenum trioxide fine particles of the present embodiment is within the above preferred range, for example, when molybdenum sulfide is produced using the molybdenum trioxide fine particles, the reactivity of the molybdenum trioxide fine particles with sulfur tends to be better.
  • the BET specific surface area of the molybdenum trioxide fine particles is preferably 0.01 m 2 /g to 500 m 2 /g.
  • the BET specific surface area is more preferably 1 m 2 /g or more, more preferably 10 m 2 /g or more, and even more preferably 20 m 2 /g or more, from the viewpoint of further improving the reactivity with other compounds, for example, sulfur.
  • the BET specific surface area may be 500 m 2 / g or less, 200 m 2 /g or less, or 100 m 2 /g or less, from the viewpoint of ease of production.
  • the shape of the primary particles in a two-dimensional image taken with a transmission electron microscope may be particulate, spherical, plate-like (sheet-like), needle-like, string-like, or ribbon-like in visual observation or image photography, or may include a combination of these shapes.
  • the shape of the primary particles of the molybdenum trioxide microparticles may be ribbon-like or sheet-like with a thickness on the nano-order.
  • the ⁇ -crystalline structure of molybdenum trioxide can also be confirmed by the presence of peaks at wave numbers of 773, 848 cm ⁇ 1 and 905 cm ⁇ 1 in the Raman spectrum obtained from Raman spectroscopy.
  • the ⁇ -crystalline structure of molybdenum trioxide can be confirmed by the presence of peaks at wave numbers of 663, 816 cm ⁇ 1 and 991 cm ⁇ 1 .
  • the molybdenum trioxide microparticles of the present embodiment have good reactivity with sulfur, and are therefore useful as a raw material for molybdenum sulfide (MoS 2 ).
  • MoS 2 molybdenum sulfide
  • the molybdenum trioxide microparticles of the present embodiment can be made highly pure, and therefore can be used in industrial grades.
  • the molybdenum trioxide microparticles of the present embodiment are expected to be used in various catalytic applications.
  • the vaporization step in the method for producing molybdenum trioxide fine particles of this embodiment is a step of irradiating molybdenum trioxide with electromagnetic waves to heat the molybdenum trioxide (hereinafter referred to as "electromagnetic wave heating") and vaporize the molybdenum trioxide.
  • the frequency of the electromagnetic waves is in the range of 300 to 30,000 MHz.
  • the molybdenum trioxide used as a raw material in the vaporization step according to this embodiment is a precursor of the molybdenum trioxide fine particles, and for example, commercially available ⁇ -crystalline molybdenum trioxide can be used.
  • the molybdenum trioxide precursor of the molybdenum trioxide fine particles may be molybdenum trioxide formed by electromagnetically heating a molybdenum oxide precursor compound. That is, the method for producing molybdenum trioxide fine particles of the present embodiment may further include, prior to the vaporization step, a step of forming molybdenum trioxide by electromagnetically heating the molybdenum oxide precursor compound. Then, in the vaporization step, the formed molybdenum trioxide may be used to produce molybdenum trioxide fine particles.
  • the molybdenum oxide precursor compound is not particularly limited as long as it forms molybdenum trioxide vapor by electromagnetic heating.
  • molybdenum oxide precursor compounds may be used alone or in combination of two or more.
  • the form of the molybdenum oxide precursor compound is not particularly limited, and may be, for example, a powder such as molybdenum trioxide, or a liquid such as an aqueous solution of ammonium molybdate.
  • the powder form is preferable because it is easy to handle and has good energy efficiency.
  • ammonium molybdate when used as the molybdenum oxide precursor compound, it is converted into thermodynamically stable molybdenum trioxide by electromagnetic heating, and the vaporized molybdenum oxide precursor compound becomes the molybdenum trioxide.
  • other metal compounds such as other metal oxides may be contained in addition to the molybdenum trioxide.
  • the metal compound other than molybdenum trioxide is not particularly limited.
  • examples of the metal compound other than molybdenum trioxide include aluminum compounds, silicon compounds, titanium compounds, magnesium compounds, sodium compounds, potassium compounds, zirconium compounds, yttrium compounds, zinc compounds, copper compounds, and iron compounds. Of these, it is preferable to use aluminum compounds, silicon compounds, titanium compounds, magnesium compounds, and iron compounds, and it is more preferable to use aluminum compounds, silicon compounds, titanium compounds, and iron compounds.
  • molybdenum trioxide and a metal compound other than molybdenum trioxide may produce an intermediate, but even in this case, the intermediate can be decomposed by electromagnetic heating, and molybdenum trioxide can be vaporized in a thermodynamically stable form.
  • an aluminum compound as the metal compound other than the molybdenum trioxide in order to prevent damage to the reaction device used. Also, it is possible not to use any metal compound other than the molybdenum trioxide in order to improve the purity of the molybdenum trioxide microparticles.
  • Aluminum compounds include aluminum chloride, aluminum sulfate, basic aluminum acetate, aluminum hydroxide, boehmite, pseudo-boehmite, transition aluminum oxides (gamma aluminum oxide, delta aluminum oxide, theta aluminum oxide, etc.), alpha aluminum oxide, mixed aluminum oxides having two or more crystal phases, etc. It is preferable that the aluminum compound is at least one selected from the group consisting of aluminum hydroxide, boehmite, and aluminum oxide.
  • Silicon compounds include silicon oxides such as silica.
  • Titanium compounds include titanium oxides such as titanium oxide.
  • Iron compounds include iron oxides such as iron oxide.
  • the metal oxide is preferably at least one selected from the group consisting of aluminum hydroxide, boehmite, aluminum oxide, silica, titanium oxide, and iron oxide.
  • the frequency of the electromagnetic waves used in the vaporization step according to this embodiment is in the range of 300 to 30,000 MHz. It is preferable that the frequency of the electromagnetic waves is in the range of 900 to 3,000 MHz.
  • the electromagnetic waves according to the present embodiment can be generated by using an electromagnetic wave generator used in a known electromagnetic wave heating device, such as MRK-3050 manufactured by Kyoei Electric Furnace Manufacturing Co., Ltd., or AMU-RUSH microwave heating device manufactured by Motoyama Corporation.
  • the vaporization step according to the present embodiment may be a step of irradiating the molybdenum trioxide with electromagnetic waves using an electromagnetic wave heating device, thereby heating and vaporizing the molybdenum trioxide.
  • the electromagnetic wave heating device can include an electromagnetic wave generator and a heating unit.
  • the heating unit can include, for example, a chamber 1 and a container 2 of an apparatus 10 for producing molybdenum trioxide particles shown in FIG.
  • the intensity of the irradiated electromagnetic waves can be appropriately selected according to the form, composition, weight, arrangement, installation location, etc. of the raw material to be irradiated.
  • the intensity of the irradiated electromagnetic waves can be adjusted, for example, by the temperature of the raw material to be irradiated or the amount of vaporization.
  • the irradiation intensity can be adjusted while measuring the (surface or internal) temperature of the raw material (sometimes referred to as the electromagnetic wave heating temperature) during the electromagnetic wave irradiation.
  • the electromagnetic wave heating temperature varies depending on the molybdenum trioxide and metal compound used as the raw material, and the molybdenum trioxide fine particles of the desired product.
  • the electromagnetic wave heating temperature is preferably 800°C or higher, more preferably 850°C or higher, and even more preferably 900°C or higher. It may also be 1100°C or lower, or 1000°C or lower.
  • the molybdenum trioxide which is the raw material of the vaporization step, is derived from the molybdenum oxide precursor compound, it is preferable to set the electromagnetic heating temperature at which the molybdenum oxide precursor compound can generate molybdenum trioxide.
  • the electromagnetic heating temperature is preferably a temperature at which the intermediate can be decomposed.
  • the electromagnetic heating temperature is, for example, preferably 500°C to 1500°C, more preferably 600°C to 1550°C, and even more preferably 700°C to 1600°C.
  • the duration of electromagnetic wave irradiation heating
  • it can be, for example, 10 minutes or more, 20 minutes to 10 hours, or 30 minutes to 5 hours.
  • the irradiation time can be selected as desired depending on the amount of molybdenum trioxide to be treated.
  • the electromagnetic waves may be irradiated (heated) continuously for a fixed period of time, or may be irradiated intermittently by turning them on and off.
  • the intensity of the electromagnetic waves may be constant, or the electromagnetic wave heating temperature may be maintained while the intensity of the electromagnetic waves is changed.
  • the manufacturing method of this embodiment is characterized in that the ON/OFF can be easily controlled compared to conventional heating methods using electric furnaces, etc.
  • the rate at which the electromagnetic heating temperature is increased varies depending on the molybdenum oxide precursor compound used, the metal compound, and the properties of the desired molybdenum trioxide microparticles.
  • the rate at which the electromagnetic heating temperature is increased is preferably 1 to 200°C/min, more preferably 2 to 100°C/min, and even more preferably 5 to 50°C/min.
  • the internal pressure near the raw material is not particularly limited and may be positive pressure or reduced pressure.
  • the vaporization step is carried out under reduced pressure.
  • a specific degree of reduced pressure is preferably -5000 to -10 Pa, more preferably -2000 to -20 Pa, and even more preferably -1000 to -50 Pa.
  • a degree of reduced pressure of -5000 Pa or more is preferable because excessive airtightness and mechanical strength are not required of the container of the vaporization step (for example, chamber 1 in the example shown in FIG. 1), and the manufacturing cost can be reduced.
  • a degree of reduced pressure of -10 Pa or less is preferable because clogging of the molybdenum oxide precursor compound at the outlet of the container of the vaporization step can be prevented.
  • gas may be blown into the vaporization process during the electromagnetic heating of the vaporization process.
  • the temperature of the gas blown is preferably 5 to 500°C, and more preferably 10 to 100°C.
  • the gas blowing speed is preferably 1 to 500 L/min, and more preferably 10 to 200 L/min, for an effective volume of 100 L of the container in the vaporization process.
  • the temperature of the vaporized molybdenum trioxide vapor varies depending on the type of molybdenum trioxide used, but is preferably 200 to 2000°C, and more preferably 400 to 1500°C. If the temperature of the vaporized molybdenum trioxide vapor is below 2000°C, it usually tends to be easily atomized in the cooling piping by blowing outside air (0 to 100°C).
  • the discharge rate of molybdenum trioxide vapor discharged from the container in the vaporization process can be controlled by the amount of molybdenum trioxide used, the amount of the metal compound mixed as necessary, the temperature of the electromagnetic heating, the blowing of gas into the container in the vaporization process, and the diameter of the exhaust port.
  • the discharge rate of molybdenum trioxide vapor from the container in the vaporization process to the cooling piping is preferably 0.001 to 100 g/min, and more preferably 0.1 to 50 g/min.
  • the content of molybdenum trioxide vapor contained in the gas discharged from the vessel during the vaporization process is preferably 0.01 to 1000 mg/L, and more preferably 1 to 500 mg/L.
  • the granulation step in the production method of this embodiment is a step of cooling the vaporized molybdenum trioxide in an unheated atmosphere to granulate it, thereby obtaining molybdenum trioxide fine particles.
  • the molybdenum trioxide vapor may be cooled, for example, by placing a cooling pipe (not shown) inside the particle recovery device 3 shown in FIG. 1 or between the particle recovery device 3 and the chamber 1.
  • the cooling is performed by lowering the temperature of the cooling pipe.
  • the cooling means may be, as described above, cooling by blowing gas into the cooling pipe, cooling by a cooling mechanism possessed by the cooling pipe, or cooling by an external cooling device.
  • the cooling temperature (temperature of the cooling pipe) is not particularly limited, but is preferably -100 to 600°C, and more preferably -50 to 400°C.
  • the cooling rate of the molybdenum trioxide vapor is not particularly limited, but is preferably 100 to 100,000°C/s, and more preferably 1,000 to 50,000°C/s. Note that the faster the cooling rate of the molybdenum trioxide vapor, the smaller the particle size and the larger the specific surface area of the molybdenum trioxide microparticles that are obtained tend to be.
  • the temperature of the blown gas is preferably -100 to 300°C, and more preferably -50 to 100°C.
  • the gas blowing speed is preferably 0.1 to 20 m 3 /min, and more preferably 1 to 10 m 3 /min.
  • a gas blowing speed of 0.1 m 3 /min or more is preferable because a high cooling speed can be achieved and clogging of the cooling pipes can be prevented.
  • a gas blowing speed of 20 m 3 /min or less is preferable because an expensive first blowing means (exhaust fan, etc.) is not required and manufacturing costs can be reduced.
  • Example 1 100 g of molybdenum trioxide (Taiyo Koko Co., Ltd., average particle size 5 ⁇ ) was placed in an alumina crucible, and the crucible was placed in a stainless steel chamber equipped with an electromagnetic wave irradiation port, a gas inlet, a gas exhaust port, and a particle recovery filter. Outside air was supplied to the chamber at a flow rate of 10 L per minute using a blower. Then, the molybdenum trioxide was irradiated with electromagnetic waves of 2450 MHz at an intensity of 1000 W from the electromagnetic wave irradiation port at the top of the chamber until the surface temperature reached 850°C.
  • the electromagnetic wave irradiation was continued to maintain 800°C by ON/OFF control of the electromagnetic wave irradiation intensity. After 75 minutes, a sudden drop in temperature was confirmed, and it was considered that the molybdenum trioxide in the crucible had volatilized. The electromagnetic wave irradiation was immediately stopped, and the inside of the crucible was checked, and it was confirmed that almost no molybdenum trioxide of the raw material remained. Thereafter, the molybdenum trioxide fine particles captured on the particle recovery filter were recovered. The recovery rate of the microparticulated molybdenum trioxide fine particles was 90%. The integrated power consumption of the input electromagnetic waves was 0.5 kW-hr, and the power consumption was 5 kW-hr/kg, calculated as 1 kg of the raw material molybdenum trioxide.
  • Example 2 Molybdenum trioxide microparticles were obtained in the same manner as in Example 1, except that 2 L of nitrogen was supplied per minute from a cylinder and that electromagnetic waves with a frequency of 900 MHz were irradiated.
  • the amount of electromagnetic wave power required for the production of molybdenum oxide microparticles was 0.7 kW-hr, and the power consumption was 7 kW-hr/kg converted into 1 kg of the raw material molybdenum trioxide.
  • the recovery rate of the molybdenum trioxide microparticles was 88%.
  • Example 3 Molybdenum trioxide microparticles were obtained in the same manner as in Example 1, except that a mixture of 50 g of molybdenum trioxide (manufactured by Taiyo Koko Co., Ltd., average particle size 5 ⁇ m) and 50 g of aluminum hydroxide (manufactured by Nippon Light Metal Co., Ltd.) was used. The molybdenum trioxide microparticles captured on the particle recovery filter were recovered. The integrated power consumption of electromagnetic waves required to produce the molybdenum oxide microparticles was 0.6 kW ⁇ hr, and the power consumption was 12 kW ⁇ hr/kg, calculated based on 1 kg of the raw material molybdenum trioxide. The recovery rate of the molybdenum trioxide was 85%.
  • the atmosphere surrounding the molybdenum trioxide does not absorb electromagnetic waves and is therefore at a low temperature, while only the molybdenum trioxide is heated, leading to vaporization through sublimation.
  • the vaporized molybdenum trioxide is immediately cooled in the atmosphere or cooled by being mixed with an atmospheric gas (air or an inert gas) supplied from the outside, and is then granulated.
  • an atmospheric gas air or an inert gas
  • Example 3 aluminum hydroxide or boehmite was added to the raw material molybdenum trioxide. In this case, both molybdenum trioxide fine particles and oxide (alumina) were obtained. This is thought to suppress the melting and liquefaction of molybdenum trioxide and reduce its corrosiveness.
  • Reference Signs List 1 Chamber 2: Container 3: Particle recovery device 6: Inlet 8: Exhaust 10: Manufacturing device (manufacturing device for molybdenum trioxide particles)

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PCT/JP2024/035082 2023-11-24 2024-10-01 三酸化モリブデン微粒子の製造方法 Pending WO2025109873A1 (ja)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013159497A (ja) * 2012-02-02 2013-08-19 Japan Atomic Energy Agency モリブデン化合物の製造方法
WO2013170678A1 (zh) * 2012-05-15 2013-11-21 嵩县开拓者钼业有限公司 工业用微波超声反应釜
JP6455747B2 (ja) 2016-06-29 2019-01-23 Dic株式会社 金属酸化物の製造装置および前記金属酸化物の製造方法
WO2020246551A1 (ja) * 2019-06-05 2020-12-10 国立大学法人金沢大学 微粒子の製造装置および微粒子の製造方法
WO2022202758A1 (ja) * 2021-03-24 2022-09-29 Dic株式会社 放射性物質吸着剤

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013159497A (ja) * 2012-02-02 2013-08-19 Japan Atomic Energy Agency モリブデン化合物の製造方法
WO2013170678A1 (zh) * 2012-05-15 2013-11-21 嵩县开拓者钼业有限公司 工业用微波超声反应釜
JP6455747B2 (ja) 2016-06-29 2019-01-23 Dic株式会社 金属酸化物の製造装置および前記金属酸化物の製造方法
WO2020246551A1 (ja) * 2019-06-05 2020-12-10 国立大学法人金沢大学 微粒子の製造装置および微粒子の製造方法
WO2022202758A1 (ja) * 2021-03-24 2022-09-29 Dic株式会社 放射性物質吸着剤

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