etherification造句
例句与造句
- A study on starch etherification with 2 - chloroethanol
氯乙醇醚化反应的研究 - Effect of reaction temperature on etherification of light fcc gasoline
反应温度对轻汽油醚化过程的影响 - Determination of degree of etherification of sodium carboxymethylcellulose for detergents
洗涤剂用羧甲基纤维素钠醚化度的测定 - Etherification of light fcc gasoline over supported tungstophosphoric heteropolyacid catalyst
采用负载型磷钨酸催化剂的轻汽油醚化 - It is required to add some water to wash the oil in the material after etherification reaction
酯化反应结束后需加入一定比例的水,对物料进行洗油。 - It's difficult to find etherification in a sentence. 用etherification造句挺难的
- Conclusion this facile etherification procedure is superior to other methods , due to its simplicity , the used of cheap reagents and excellent yield
结论该工艺操作简便、试剂价廉易得、产率高，实现了对原有工艺的改进。 - Beginning with fluorobenzaldehyde , cyfluthrin was synthesized by bromination , acetalation , etherification , hydrolysis , and esterification , with a total yield of 45 %
以对氟苯甲醛为起始原料，经过溴化、缩醛化、醚化、水解、酯化合成氟氯氰菊酯，总收率45 % 。 - Using refined cotton , chloroacetic acid , sodium hydroxide and hydrogen peroxide as main feedstock , sodium carboxymethyl cellulose was made by the process of basification , etherification , abstersion and drying
摘要以精制棉、氯乙酸、氢氧化钠和过氧化氢为原料，经过碱化、醚化、洗涤、干燥，制得羧甲基纤维素钠。 - Soluble in water and many organic solvent , owning good lubricity and thermal stability , almost having no toxicity and excitability , being able to occur esterification reaction and etherification reaction with other compounds
能溶于水和多种有机溶剂，有优越的润滑性及热稳定性，几乎没有毒性和刺激性，可与其他化合物起酯化、醚化反应。 - Methods atomoxetine hydrochloride was synthesized using 3 - phenyipropanol as the starting material via six steps , such as chlorination , bromination , etherification , substitution , separation of levorotary isomer and acidification by gaseous hydrogen chloride
方法以1 -苯丙醇为起始原料，经氯代、溴代、醚化、胺化、拆分、氯化氢成盐6步反应合成盐酸托莫西汀。 - Abstract : propylene alcohol ethers is one of the fine chemicals with many uses and lower toxicity , which is widely studied now . the research progress on the catalysts in the etherification of propylene oxide with alcohol was reviewed in this paper
文摘:丙二醇醚是一种低毒用途广泛的精细化学产品,目前国内外对其生产工艺与催化剂的开发广为关注.本文作者较为系统地概述了国内外有关合成丙二醇醚催化剂的研究现状 - This text carries through investment decision analysis about technology indraught of petrol etherification of liaohe petrifaction company . and combines company reality to draw up feasible and optimal petrol etherification technology project in some aspects which including technology , economic and social benefit
本文采用定性与定量相结合的方法对辽河石化公司引进汽油醚化技术进行了科学的投资决策分析，在结合公司实际的基础上，给出了技术上，经济上，社会效益上都可行的也是最佳的汽油醚化技术方案。 - These years we have developed strongly acidic macroreticular catalysts based on styrene dvb . catalyst resin d006 for mtbe tame etbe , also as catalyst use for producing tba by isobutene hydration and direct producing gasoline with high octane rating by light gasoline etherification . d008 for sba ipa , also can be used for making methyl ethyl ketone by acetone one - stepping process , tert - butanol by isobutene hydration , etherified gasoline by the etherification of isopentene and isohexene in light gasoline with methyl alcohol , high
以上，增强了催化活性，从而延长了使用寿命，提高了周期产量二低温活性好，选择性强，提高了mtbe的纯度，降低了杂质含量三在同样装置中，可增大负荷，提高产量，降低生产成本和费用。 - As to the separation of p - xylene / m - xylene , in order to blend polymer hydrophobe with p - cd which is preferential to adsorb p - xylene , etherified p - cd was synthesized using benzyl chloride ( phch2cl ) . the influences of etherification conditions on the reaction conversion and the degree of substitution of etherified p - cd were investigated . the reaction conversion increases with the increasing of molar ratio of phcr ^ cl : p - cd and the concentration of p - cd
对于px mx体系的分离，为使对px具有优先络合能力的一环糊精( cd )能够与油溶性高分子共混，本文采用williamson合成法运用氯化苄( phch _ 2cl )使-环糊精( - cd )醚化，并由元素分析结果，计算出醚化产物的取代度和转化率，系统地考察了反应条件对转化率和取代度的影响。 - Two kinds of flavonoids in water extracts , water - extraction and alcohol precipitation , alcohol extracts were found by paper chromatography . they were separated and purified by thin - layer chromatography , one of which was primarily identified by uv as 4 " , 5 - dihydroxy - flavonol etherification or 4 " , 5 , 8 - trihydroxy - flavonol etherification
水提物、水提醇沉物、醇提物等3种提取物纸层析结果显示有两种黄酮类化合物，经薄层层析分离纯化，并进行紫外光谱分析，初步测定其中一组分为4 ， 5 -二羟基黄酮醇醚或4 ， 5 ， 8 -三羟基黄酮醇醚。