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huangguaha

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The test solution was deaerated with oxygen free nitrogen (OFN) before charging into the autoclave vessel. The dissolved oxygen content was measured by a Hamilton optical oxygen meter following purging and found to be less than 5ppb. All the lines to the autoclave from the deaeration vessel were purged with nitrogen and evacuated. The test solutions were transferred to the autoclaves under pressure of OFN and purged with OFN in the autoclave for a further 30 minutes. The quantity of solution transferred to each autoclave was sufficient to give a ratio of approximately 20ml/cm2 of specimen surface area.
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ssssllllnnnn

至尊木虫 (知名作家)

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【答案】应助回帖

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huangguaha: 金币+100, 翻译EPI+1, ★★★★★最佳答案, 非常感谢 2014-10-29 14:25:56
测试溶液在充入高压釜容器之前先用无氧氮气(OFN)进行脱气(排除空气)。驱气后用一汉密尔顿光氧计测定溶解的氧含量,结果低于5ppb。从脱气容器到高压釜的所有通道都用氮气驱气,并抽真空。在无氧氮气压力下转移测试溶液到高压釜中,并用OFN在高压釜另外驱气30分钟。溶液转移到每个高压釜的量足够多,以得到约为20毫升/cm2样品表面积的比率。
2楼2014-10-29 12:15:01
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Jobin

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3楼2014-10-29 12:22:51
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zzbean

金虫 (正式写手)

【答案】应助回帖

在充入高压反应釜前先将测试溶液用无氧氮气(OFN)进行脱气处理。再用汉密尔顿光氧计测定其溶解的氧含量,其结果低于5ppb。脱气容器至高压反应釜间的所有连接通道都用氮气排除空气并抽成真空。在无氧氮的气氛下将测试溶液转移至高压釜反应内,并用OFN再对高压反应釜进行驱气30分钟的排气处理。转移至各高压反应釜中的溶液的量足够多,以保证其比表面积约为20mL/cm2。
4楼2014-10-29 13:09:06
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