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采用不同的焙烧温度制备纳米钒催化剂,并进行微观形貌、活性、机械强度和耐腐蚀性能的测试与分析。结果表明,650℃焙烧纳米钒催化剂具有最佳的活性、机械强度和耐腐蚀性能;在试样活性测试过程的耐热温度为500℃时,650℃焙烧的试样的的活性较500℃焙烧的试样增加24.6%、较800℃焙烧的试样增加38.6%;机械强度较500℃焙烧的试样提高28.4%、较800℃焙烧的试样提高45.8%;腐蚀电位较500℃焙烧的试样正移97 m V、较800℃焙烧的试样正移222 m V。
The nano-vanadium catalyst was prepared by using different calcination temperature, and the microstructure, activity, mechanical strength and corrosion resistance were tested and analyzed. The results show that the nano-vanadium catalyst calcined at 650 ℃ has the best activity, mechanical strength and corrosion resistance. When the heat-resistant temperature is 500 ℃, the activity of the sample calcined at 650 ℃ is higher than that at 500 ℃ Of the sample increased by 24.6%, compared with 800 ℃ calcined sample increased by 38.6%; mechanical strength than the sample calcined at 500 ℃ increased 28.4%, compared with 800 ℃ calcined sample increased 45.8%; corrosion potential than the 500 ℃ calcined test The sample moved 97 mV, which was 222 mV more positive than the sample baked at 800 ℃.