Method for preparing transitional metal ion copper modified adsorbent for purifying low-concentration phosphine
A transition metal ion, phosphine technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of complex process, consumption of oxidant, increase operation, control difficulty, etc., and achieve the effect of high adsorption activity
Examples
Embodiment 1
[0025] Take 10.00 g of activated carbon carrier with a certain particle size, ultrasonically wash it with deionized water, place it in a constant temperature drying oven, and dry it at a constant temperature at 110°C for 24h, and then dry it at a constant temperature at 110°C for 24h. Weigh 1.26g of Cu(SO 4 ) 2 ·5H 2 The O solid was dissolved in 50 ml of distilled water, then ultrasonically impregnated activated carbon for 0.5 h, dried in a constant temperature oven at 120 °C for 24 h, and then placed in a muffle furnace for activation at 400 °C for 6 h. The adsorption process conditions are as follows: 4.50g of adsorbent, 70°C temperature, 3000h-1 space velocity, 650ppm phosphine concentration in the feed gas, and 1.0% oxygen volume fraction. Put this adsorbent in a fixed-bed reactor, and the purification efficiency of this adsorbent to phosphine is shown in the table below:
[0026] time (min)
Embodiment 2
[0028] Take 10.00 g of activated carbon carrier with a certain particle size, ultrasonically wash it with deionized water, place it in a constant temperature drying oven, and dry it at a constant temperature at 110°C for 24h, and then dry it at a constant temperature at 110°C for 24h. Weigh 0.86g of CuCl 2 2H 2 The O solid was dissolved in 50 ml of distilled water, then ultrasonically impregnated activated carbon for 0.5 h, dried in a constant temperature oven at 120 °C for 24 h, and then placed in a muffle furnace for activation at 400 °C for 6 h. The adsorption process conditions are as follows: 5.25g of adsorbent, 70°C temperature, 1500h-1 space velocity, 610ppm phosphine concentration in the feed gas, and 1.0% oxygen volume fraction. Put this adsorbent in a fixed-bed reactor, and the purification efficiency of this adsorbent to phosphine is shown in the table below:
[0029] time (min)
Embodiment 3
[0031] Take 10.00 g of activated carbon carrier with a certain particle size, ultrasonically wash it with deionized water, place it in a constant temperature drying oven, and dry it at a constant temperature at 110°C for 24h, and then dry it at a constant temperature at 110°C for 24h. Weigh 1.00g of Cu(CH 3 COO) 2 ·H 2 The O solid was dissolved in 50 ml of distilled water, then ultrasonically impregnated activated carbon for 0.5 h, dried in a constant temperature oven at 120 °C for 24 h, and then placed in a muffle furnace for activation at 400 °C for 6 h. The adsorption process conditions are as follows: 4.21g of adsorbent, 70°C temperature, 3000h-1 space velocity, 850ppm phosphine concentration in the feed gas, and 1.0% oxygen volume fraction. Put this adsorbent in a fixed-bed reactor, and the purification efficiency of this adsorbent to phosphine is shown in the table below:
[0032] time (min)
PUM
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Description
Claims
Application Information
- IPC
- B01J20/32; B01J20/20
- Inventors
- 唐晓龙; 余琼粉