A kind of cobalt-doped glass microsphere and its preparation method and application
A technology of cobalt glass and microspheres, which is applied in the field of cobalt-doped glass microspheres and its preparation, to achieve the effects of good gas retention, improved chemical stability and mechanical properties, and high compressive strength
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Embodiment 1
[0035] This embodiment includes the following steps:
[0036] (1) Choose 6.9Li 2 O·6.2Na 2 O 0.5K 2 O 0.9Al 2 o 3 0.2CoO 16.5B 2 o 3 68.8SiO2 2 (wt.%) cobalt-doped xerogel block as raw material, dried at 100°C for 2 hours, then ground and sieved. Grind in a vibrating sieve with an amplitude of 1.2 mm, a time interval of 0.1 s, and a grinding time of 8 min. Sieve the ground cobalt-doped xerogel particles successively with sieves with apertures of 160 μm and 125 μm, with an amplitude of 0.9 mm, a time interval of 0.2 s, and a sieving time of 7 min;
[0037] (2) Take the cobalt-doped xerogel particles obtained in step (1) with a particle size ranging from 125 μm to 159 μm and dry them at 105° C. for 3 hours;
[0038](3) Introduce helium-argon mixed gas into the vertical high-temperature xerogel furnace, the total pressure is 1.0atm, and the partial pressure of helium is 95%; the temperature in the furnace changes from room temperature to rise to 1550°C.
[0039] (4) Fe...
Embodiment 2
[0043] The steps of embodiment 2 and embodiment 1 are basically the same, and the main difference is that 6.7Li is selected 2 O·6.1Na 2 O 0.5K 2 O·
[0044] 0.9Al 2 o 3 2.3CoO 16.2B 2 o 3 67.3 SiO2 2 (wt.%) cobalt-doped xerogel block as raw material. During the grinding process, the vibration amplitude of the vibrating screen is 1.1 mm, the time interval is 0.1 s, and the vibration time is 7 min. The apertures of the sieves used in the screening process are 180 μm and 160 μm, the amplitude of the vibrating screen is 0.8 mm, the time interval is 0.1 s, and the vibration time is 5 min; the size range of the obtained cobalt-doped xerogel particles is 160 μm-179 μm; The total pressure of the heat-conducting gas during the ball preparation process is 1.0 atm, of which the partial pressure of helium is 80%, and the temperature in the furnace is 1550°C; the power of the light source used in the photo-induced hydrogen release process is 0.84W.
[0045] The prepared cobalt-do...
Embodiment 3
[0047] The steps of embodiment 3 and embodiment 1 are basically the same, and the main difference is to select glass formula 6.5Li 2 O·5.9Na 2 O 0.5K 2 O·
[0048] 0.9Al 2 o 3 5.5CoO 15.6B 2 o 3 65.1 SiO2 2 (wt.%) The corresponding cobalt-doped xerogels were ground and sieved. During the grinding process, the vibration amplitude of the vibrating screen is 1.1 mm, the time interval is 0.1 s, and the vibration time is 6 min. The sieve diameters used in the screening process are 180 μm and 160 μm, the amplitude of the vibrating screen is 0.8 mm, the time interval is 0.2 s, and the vibration time is 6 min; the obtained cobalt-doped xerogel particle size ranges from 160 μm to 179 μm; cobalt-doped glass microspheres are prepared The total pressure of the gas in the furnace during the process is 1.0 atm, wherein the partial pressure of helium is 75%, and the temperature in the furnace is 1500°C; the power of the light source used in the photo-induced hydrogen release process...
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