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小馬俊杰木蟲 (著名寫手)
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[求助]
關(guān)于氨氣TPD表征的問題 很急 希望大家賜教 謝謝 已有1人參與
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| 審稿人有個(gè)問題問The authors need to report the degassing temperature on NH3-TPD,Please ensure that the TPD signals above 400 °C did not contain impurities, especially moisture. 我回答了A sample of 100 mg was pretreated in He (30 mL/min) at 200 °C for 1 h, and the sample was treated with NH3 (30 mL/min) for 0.5 h after cooling down to 100 °C. 但是他又回復(fù)Unless the authors guarantee complete removal of H2O from the catalyst, TCD signals above 400 oC should not be used as a result. 求教各位,應(yīng)該怎么回復(fù)。催化劑一開始200度下預(yù)處理,就沒有水分了吧? |

木蟲 (正式寫手)
新蟲 (正式寫手)
新蟲 (知名作家)
版主 (著名寫手)
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樓主可以從兩種方法入手,一是補(bǔ)充TPD-MS,同步檢測升溫過程中氨和水,或者補(bǔ)一個(gè)空白實(shí)驗(yàn),就是相同條件下不吸附氨然后升溫檢測有無信號 發(fā)自小木蟲IOS客戶端 |

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