名稱：填充柱

型號：HH-624

規格：60m*0.32mm*1.0um
應用：HG/T 4778-2014工業用乙酸正丙酯

以乙酸和正丙醇為原料合成乙酸正丙酯,利用中心組合設計試驗考察醇酸摩爾比、催化劑用量和反應時間3個因素對SO_4~(2-)/Nd_2O_3-ZrO_2-Fe_2O_3三元固體超強酸催化合成乙酸正丙酯的影響,運用正交實驗對其工藝參數進行優化,確定的合成條件為:醇酸摩爾比1.3∶1、催化劑用量1.6 g和反應時間2.5 h,酯化率為92.6%。在此條件下重復實驗5次,酯化率仍在92%以上。

浩瀚色譜（山東）應用技術開發有限公司采用毛細管柱，面積歸一法測定工業用乙酸正丙酯純度及雜質，結果滿意。


毛細管柱測定工業用乙酸正丙酯 測試譜圖：



Determination of n-Propyl Acetate for Industrial Use by Capillary Column
Capillary column determination of n-propyl acetate for industrial use Details:

Name: Packed column

Filler: 6% cyanopropyl phenyl/94% dimethyl polysiloxane
Sex: weak to moderate stationary phase
Equivalent to USP stationary phase G43
Model: HH-624

Specification: 60m*0.32mm*1.0um
Application: HG/T 4778-2014 industrial n-propyl acetate

Using acetic acid and n-propanol as raw materials to synthesize n-propyl acetate, using the central combination design experiment to investigate the three factors of the molar ratio of alkyd, the amount of catalyst and the reaction time to SO_4~(2-)/Nd_2O_3-ZrO_2-Fe_2O_3 ternary solid super acid The influence of the catalytic synthesis of n-propyl acetate, the orthogonal experiment was used to optimize the process parameters, and the optimal synthesis conditions were determined as follows: the molar ratio of alkyd to acid is 1.3:1, the amount of catalyst is 1.6 g, the reaction time is 2.5 h, and the esterification rate is 92.6%. Under these conditions, the experiment was repeated 5 times, and the esterification rate was still above 92%.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. uses capillary column and area normalization method to determine the purity and impurities of industrial n-propyl acetate with satisfactory results.


Capillary column determination of industrial n-propyl acetate test spectrum: