1) Carbonyl ratio
羰基比
2) carbonyl
[英]['kɑ:bənil] [美]['kɑrbənɪl]
羰基
1.
Study on Simulation of Vibrant Frequency of Carbonyl;
羰基振动频率的理论计算模拟
2.
Two isoxazole intermediates containing 1,2,3triazolyl and carbonyl,which can also be used as intermediates for synthesis of new heterocyclic compounds,have been synthesized.
以2-苯基-1,2,3-三唑-4-甲醛为原料,合成2种在异噁唑环上同时含有1,2,3-三唑基和羰基的新型化合物,它们可作为合成其他杂环化合物的中间体,其分子结构经IR,1HMR,MS谱确证。
3.
0,the amount of oxidation element Ⅰ 4%,the temperature 85 ℃ and the time 4 h;the optimum conditions to obtain the maximal carbonyl content was: pH=5.
而得到含羰基量较多的糊化活化淀粉最佳反应条件为pH值5。
3) carbonyl group
羰基
1.
The conditions/reagents for protecting carbonyl groups as acetals, thioacetals and oxothioacetals as well as the corresponding deprotection processes published during the period of 2000～2006 are briefly surveyed.
对2000～2006年间文献中报道的一些对羰基化合物进行缩酮(醛)类的保护、去保护的主要方法进行了简要的概述。
2.
This article narrates the transformation of carbonyl group in optically active epoxy ketones under different reagents and enumerates some synthetic applications of this kind of transformation.
本文讲述了有机合成中光学活性的环氧酮化合物中酮羰基在不同试剂下的转化,并列举了一些相关的合成应用。
3.
The chemical reductants fail to reduce carbonyl group under ambient conditions.
羰基在一般条件下不易被化学还原剂还原。
4) carboxide
羰基
1.
The mass spectral fragmentation of long chain carboxide compounds was discussed and calculation of molecular formula was proposed in the paper.
〕本文讨论了长链脂肪族羰基化合物的质谱裂解规律及其分子式的计
2.
It bas been discovered that the carboxylic ester rare earth salt is superior to the organotin in antidehydrochlorination, and inferior to the organotin in antioxidation through following the tracks of carboxide group and conjugated double bond with the help of infrared spectroscopy and ultraviolet-visible spectroscopy.
借助于红外光谱和紫外／可见光谱，通过跟踪光老化过程中羰基基团和共轭双键的变化，发现羧酸酯稀土的抗脱ＨＣｌ能力优于有机锡，但抗氧化能力不如有机锡。
5) carbonyl nickel powder
羰基镍粉
1.
The nitrous oxide-ethane flame atomic absorption spectrophotometer was used to measure calcium in carbonyl nickel powder.
运用N2O-C2H2火焰原子吸收光谱法测定羰基镍粉中的钙。
2.
The application of air-acetylene flame atomic absorption spectral method for measuring the iron content in carbonyl nickel powder is studied.
文章运用了空气-乙炔火焰原子吸收光谱法进行羰基镍粉中铁含量的测定。
3.
The application of N_2O-C_2H_2 flame atomic absorbing spectral method to measure the content of molybdenum in carbonyl nickel powder is studied.
运用了N2O-C2H2火焰原子吸收光谱法进行羰基镍粉钼含量的测定。
6) carbonyl iron
羰基铁粉
1.
Study on the surface modification of carbonyl iron;
羰基铁粉颗粒表面硅烷偶联剂改性的研究
2.
Study on ferrite/carbonyl iron composite absorber;
铁氧体/羰基铁粉复合吸波材料研究
3.
TGA(mass reduction) curves showed the high magnetic content of the porous composites and XRD spectra showed that carbonyl iron particles in porous composite micro-spheres were not changed but remain the magnet of its own.
以硅烷偶联剂KH-570对羰基铁粉颗粒进行表面修饰,并经一步聚合得到多孔磁性高分子微球。
补充资料：N-(乙氧羰基)-N-(乙氧羰基乙基)甘氨酸乙酯
分子式：C12H21NO6
分子量：275.30
CAS号：14891-08-8
性质：液体。沸点155-166℃/0.40kPa。
制备方法：用甘氨酸与丙烯腈加成，生成N-氰乙基甘氨酸，然后与乙醇在酸催化下酯化得N-（乙氧羰基乙基）甘氨酸乙酯盐酸盐，将后者与氯甲酸乙酯在碳酸钠参与下缩合制得该品。
用途：南瓜子氨酸氢溴酸盐的中间体。
分子量：275.30
CAS号：14891-08-8
性质：液体。沸点155-166℃/0.40kPa。
制备方法：用甘氨酸与丙烯腈加成，生成N-氰乙基甘氨酸，然后与乙醇在酸催化下酯化得N-（乙氧羰基乙基）甘氨酸乙酯盐酸盐，将后者与氯甲酸乙酯在碳酸钠参与下缩合制得该品。
用途：南瓜子氨酸氢溴酸盐的中间体。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条