Question

求化工专业外文论文翻译高手

To analyze this solution for any oxygenate products,the volume of Solution A-1 was reduced to minimum by rotary evaporator with water bath set at 50 (C. Then,40 mL methanol, 10 mL water and a catalytic amount of concentrated sulphuric acid were added to the resulting mixture, and the solution was stirred at 65 (C for 15 h in order to complete the esterification process(this step is necessary to determine the high boiling acid products by GC-MS, for example, methanol reacts with adipic acid to give dimethyladipate ester). After that,certain amount of sodium hydrogen carbonate was added to the esterification solution until there was no more gas bubble coming out from the solution. Then,rotary evaporator was used to reduce the volume of the reaction mixture with water bath set at 40 (C, where most of the water contented should be remained as two solution layers appeared after methanol was removed.The solution was then transferred into a 250 mL separation flask with 30 mL of diethyl ether added to extract any oil soluble products. The upper layer, which was the diethyl ether solution, was transferred into an ice cooled 250 mL volumetric flasks (Solution A-2) via a filter
containing 1 g of anhydrous MgSO4 in order to dry and to filter the solution. The extraction was repeated for another four times. The last extraction was conducted with the same manner as the previous extractions except a known amount of sodium chloride (NaCl) was used to saturate the aqueous layer in order to reduce the solubility
of any remaining organic oxygenates from the aqueous layer. Identification and quantification of oxygenates obtained after the reaction were then conducted with GC-MS. 10 mL Solution A-2 and 0.3 mL0.030 M toluene/methanol were transferred into a 25 mL volumetric flask and made up to 25 mL with diethyl ether (Solution D-1). Different oxygenates could then be identified from their mass spectra. The concentration of a number of the mainly observed oxygenates were determined according to previously obtained calibration curves, where toluene was used as the external
standard.
3. Results and discussion
The quantity of reactants, reaction time and temperature used are summarized in Table 1. According to the above analytical conditions, the total cyclohexane conversions and the conversions to oxygenate were determined and are also summarized in Table 2. It is noted that acetic acid appeared to be essential for the liquid phase oxidation of cyclohexane as the absence of acetic acid in Trial 10 produced a poor cyclohexane conversion. It seems that acetic acid plays a main role in bringing the cyclohexane, NHPI and the catalyst (tradition metal salts) into a single phase to facilitate the catalysis. Thus, in the presence of acetic acid all reactants can be mixed and reacted in a homogeneous phase.
希望靠自己的实力整理通顺~不要谷歌等网络翻译的

Answer 1

大哥，翻译不难，可是给的分数这么少，你好意思啊