precursor gas 中文意思是什麼
precursor gas
解釋
臭氧的氣體前體-
A two - dimensional model is proposed for simulation of gas phase cracking of 1, 2 - dichloroethane ( edc ) to produce vinyl chloride monomer ( vcm ) in tubular reactor furnace, in which side reaction of coke precursor formation is taken into consideration
摘要建立了二氯乙烷在管式反應器中進行氣相熱裂解的二維模型，模型考慮了二氯乙烷熱解生成氯乙烯的主反應和生成焦前體的副反應以及氣體密度變化對裂解反應的影響。 -
The oxygen sensing properties of the membranes have been studied, the results indicate that the membranes with ru ( phen ) 3cl2 have better oxygen - sensitivity than those with ru ( bpy ) 3cl2, and the membranes with the formamide content of 16 % ( v / v ) and ru ( phen ) 3cl2 content of 2. 10g / l in the precursor mixture have the best structure and quality. the fiber optic gas oxygen sensor with this sensing membrane has a detection limit of 5ppm, a response time of less than 30s, excellent reproducibility and stability. ( 2 ) a new kind of organically modified oxygen - sensitive membrane based on fluorescence quenching was prepared by sol - gel method, using dds and teos as the mixed precursor, rufchenbcla as the indicator
實驗證明：該類敏感膜的tan _ 0 tan值與氧氣濃度存在良好的線性關系；包埋ru （ phen ） _ 3cl _ 2的凝膠膜的氧敏感性相對較好；當甲酰胺為16體積比含量， ru （ phen ） _ 3cl _ 2在前驅體中濃度為2 . 10g l時，制備的敏感膜結構和性能最佳；對氣態氧檢測時，該敏感膜的響應時間小於30秒，檢測下限為5ppm ，具有較好的重復性和穩定性。
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