02-TPD表征问题，谢谢各位大侠？ 谢谢，楼上的，查了很多文献说是在o2的情况下，具体原因也不是很清楚。比如文献：the o2-tpd experiments were performed on quantachromechembet-3000. 200mg of the sample was pretreated using 4.16%o2 in he (80 ml/min) at 600 ?c for 30 min, and then cooled down toroom temperature in the same atmosphere. the oxygen desorbedgradually from 100 ?c to 850?c at a heating rate of 10 ?c/min in hestream.o2-tpd experiments were performed in a quartz reactorusing a tcd as detector. in each analysis, 500-mg sampleswere pre-treated with helium gas increasing the temperaturefrom room temperature up to 973 k at 10 k min1. thesamples were oxidized with a 20% o2/he mixture at a total flowrate of 30 ml min1 at 973 k for 30 min. then, they werecooled down to room temperature in the oxidizing mixture andflushed by a stream of purified he for 30 min. the desorptionwas carried out in the same conditions as the pre-treatment,maintaining the temperature at 973 k until the tcd signalreturned to baseline.预处理的温度以及升温采集数据的最终的温度有什么具体要求吗？（预处理的温度350度左右可以吗？）， 查看更多
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