环己酮

The optimal separating condition of chromatography analysis was: Shimadzu VP-ODS 150mm4.6mm as chromatographic column; acetonitrile/water (12/88,V/V, Contained 1.25mmol/l phosphoric acid) as mobile phase with flow rate of 1.0ml/min. Macroporous ion exchange resins and activated carbon were applied to enrich the trace level impurities and the main impurities was determined by LC-MS and GC-MS.They were : Benzonitrile , 2-Methyl-8-hydroxyquinoline, 2,6-Pyridinediamine , O-ethyloxime Cyclo-hexanone and compound with 220 molecular weight .

采用离子树脂和活性炭吸附富集这些微量的杂质，并通过液质联用和气质联用对杂质进行了定性分析，鉴定了影响290nm吸收的主要杂质为苯甲腈，2甲基-8羟基喹啉，2，6二氨基吡啶，O-乙基环己酮肟和分子量220的物质。

Some materials were synthesized in this paper at first, 1-nitro-2-pentanol was synthesized with nitromathane and butyraldehyde and the yield was 70.2%; l-nitro-2-pentanol was reduced to 1 -amino-2- pentanol with iron and the yield was 65.2%.

分别用氢氧化钠、三乙胺为缚酸剂，2-氨基-1-丁醇、1-氨基-2-戊醇、环己酮和二氯乙酰氯为原料，采用一步法和分步法合成了两种潜在除草剂安全剂。

In addition, the devices with optimizing the mixture of chloroform and cyclohexanone, and mixture of chloroform and chlorobenzene showed a current efficiency as 0.468 and 0.816 cd/A, respectively.

另外，本实验中氯仿和环己酮混合溶剂的最佳电流亮度效率为0.468 cd/A，氯仿和氯苯混合溶剂的0.816 cd/A。

By the analysis of coal two-step extract by FTIR and comparison of extraction rate, we can see the two-step extraction with combination of cyclohexanone and CS〓-NMP (1: 1, v/v) has higher extraction rate as to coal of different degree of coalification.

4环己酮和CS〓－MP（1：1，v/v）复合溶剂的两步抽提对不同煤化程度的各煤种均保持了较大的抽提率，基本达到对不同煤种的可溶化要求。

The results show that the effect of temperature on monomer conversion in cyclohexanone is more distinct than that in tetrahvdrofuran.

实验结果显示在四氢呋喃体系中温度对转化率的影响较大，且在相同的条件下转化率也较环己酮体系高。

Cyclohexanone derivatives play an important role in liquid crystal display material.

环己酮衍生物在液晶显示材料中占有非常重要的地位。

Among them, cyclohexanone project as the core of the product chain, the introduction of international advanced level of Asahi Kasei technology to fully enhance the competitiveness of their products.

其中，环己酮项目作为产品链的核心，日本旭化成国际先进水平的技术引进，充分发挥其产品的竞争力。

Our company is very famous in the market for over 40 chemical products such as Phenol, Acetone and Cyclohexanone.

公司多年来经销的以苯酚、丙酮、环己酮等四十余种化工产品闻名遐迩。

It is indicated that improving the physical properties of the catalyst and reducing the cost of production are major work to be done, the integrated process of H2O2 production and ammoximation of cyclohexanone should be attached with great importance to green chemical industry.

指出提高催化剂的性能、降低其生产成本是今后研究的重点，绿色氧化剂过氧化氢的生产与氨氧化过程的集成是今后环己酮肟生产的发展方向。

The trends of direct oxidation of cyclohexanone to hexanolactam and developments of different routes in preparation of feed stocks of nylon-66 are also described.

简介了环己酮直接氧化制己内酰胺的发展趋势及尼龙-66生产原料路线的开发动向。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。