Technological Optimization of the Preparation of Imidacloprid

来源 :Chinese Journal of Chemical Engineering | 被引量 : 0次 | 上传用户:sea37
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In order to reduce the production cost of imidacloprid, the preparation technology for the direct combination of 2-chloro-5-chloromethylpyridine and 2-nitryliminoglyoxaline has been optimized in a 10L stirred tank reactor with a new solvent, butanone, and
其他文献
[目的]为了研究土壤肥力和植株密度对冬小麦冠层结构的影响。[方法]在不同土壤肥力和种植密度条件下,研究了冬小麦群体茎、叶特征的变化。[结果]冬小麦起身期的总茎数略低于
为了验证杏鲍菇多糖对鸡群机体免疫功能的调节作用,通过检测注射免疫新城疫疫苗后鸡群的抗体水平和红细胞免疫黏附力,研究杏鲍菇多糖对鸡群免疫功能调节的影响。结果表明:鸡群
对商丘地区菜田蜗牛的种类、危害情况、生活史等进行总结,并初步提出生物防治、人工防治,化学防治等综合防治的方法.
Five bacterial strains,which are able to grow and to disintegrate dibenzothiophene (DBT) and dibenzothiophene sulfone (DBTO2) in fossil fuels,are isolated.Analy
An experimental study on the axial dispersion of liquid was carried out in a 0.382-m-ID flotation column packed with different structured packings or free of pa
An apparatus,desinged to simulate bubbling of a sieve tray operated in froth regime,was employed. Bubble contact angles in and above the incipient weeping regim
Octacosanol is purified by agitated short-path distillation (SPD). Effects of evaporation temperature,number of SPD steps in series and other distillation metho
The effects of surfactant on the solvent extraction in leaching sphalerite were investigated. It is found that sodium dodecyl sulfonate is the effective surfact
上市公司质量问题一直是中国证券市场上为人诟病的一大弊端,诸如虚假包装、欺诈上市、盲目融资、圈钱变脸、一股独大、关联交易等现象屡见不鲜,造成上市公司的内在质地不高,
A model of evaluation and prediction of enhancement of boiling heat transfer with additives has been propoeed according to fuzzy fundamentals. Correlative appr