一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List ACETIC ACID-D
758-12-3

ACETIC ACID-D synthesis

13synthesis methods
-

Yield:-

Reaction Conditions:

with 3NH4(1+)*PW12O40(3-)*6H2O=(NH4)3PW12O40*6H2O;water-d2 at 59.84; for 2 h;Catalytic behavior;Reagent/catalyst;

Steps:

2.5 Hydrolysis of alkyl acetate
Hydrolysis of ethyl acetate was carried out at 333K with 5wt% ethyl acetate in D2O (total volume: 3.0ml, ethyl acetate: 0.15g (1.7mmol)) for 2h. The weight of the catalyst used was 0.075g (24.7μmol) [10]. (0016) Conversion and yield were estimated using 1H NMR. In the 1H NMR spectra, peaks corresponding to ethyl acetate, ethyl alcohol, and acetic acid were observed. No other peak was observed. Therefore, we assumed that selectivity of this hydrolysis was 100%. Since peaks of methylene (CH2O) for ethyl acetate (4.03ppm) and ethyl alcohol (3.52ppm) were well separated, the conversion of ethyl acetate was calculated using the integration ratio of these two peaks as follows:Conversion (%)=(integration of CH2O of ethyl alcohol)/(integration of CH2O of ethyl acetate+integration of CH2O of ethyl alcohol)×100. (0017) The calculated conversion and yield of hydrolysis of ethyl acetate in the presence of Keggin-type phosphotungstic acid were consistent with data obtained by the GC method, indicating that our analytical method using NMR is appropriate.

References:

Sahiro, Koichi;Ide, Yusuke;Sano, Tsuneji;Sadakane, Masahiro [Materials Research Bulletin,2013,vol. 48,# 10,p. 4157 - 4162]

FullText

ACETIC ACID-D Related Search:

金溪县| 襄垣县| 方山县| 平谷区| 鄂伦春自治旗| 盐边县| 成武县| 福安市| 惠东县| 曲水县| 龙州县| 麟游县| 海伦市| 海阳市| 遵义市| 彩票| 苍山县| 紫云| 拉萨市| 昌平区| 新郑市| 图们市| 天水市| 满城县| 湖口县| 铁力市| 汝南县| 孟津县| 镇安县| 八宿县| 巴彦淖尔市| 临沂市| 绥江县| 策勒县| 五华县| 望江县| 清河县| 望谟县| 东至县| 兴化市| 明星|