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- Butyrolactone series products are synthesized via aldol condensation, catalytic hydrogenation and oxidation reaction based on cyclopentanone and aliphatic aldehyde. 以环戊酮和脂肪醛系列为原料,经过羟醛缩合、催化加氢、氧化反应,三步制得丁位内酯系列产品。
- The reaction mechanism between aldehyde acid( including multiple aldehyde acid and glyoxylic acid) and collagen was studied by means of collagen molecule modification, amino acid analysis, and other analytical techniques. 采用胶原分子修饰、基酸分析等方法,初步探讨了多元醛酸和乙醛酸与皮胶原的反应机理。
- Keywords acetic acid;copper o-toluenesulfonate;synergistic catalysis;aromatic aldehyde;aliphatic aldehyde;acetic anhydride;gem-diacetate; 关键词乙酸;邻甲基苯磺酸铜;协同催化;芳香醛;脂肪醛;乙酸酐;偕二乙酸酯;
- In reality, readily characterizable high polymers are formed only from aliphatic aldehydes RCHO. 事实上有代表性的高聚物仅仅是由脂肪醛RCHO制得的。
- Twenty five compounds such as geranial, neral, linalool and aliphatic aldehydes were selected as the components co... 由此可知,利用香气成分的香气值,能够筛选出对食品的香气起重要作用的成分。
- Unsaturated fatty acids is easy to be oxidation, creating great deal of oxides, per-oxide-hydrogens, and then decompose into aldehude, aldehyde acid, mellow, hydrocarbon, ketone compounds. 有人为了清除狐臭,就将腋窝大汗腺切除,或用激光加以破坏。这是不可取的。因为汗腺是人体正常新陈代谢的一个途径。
- The aliphatic aldehydes were more abundant than aromatic and branch-chain aldehydes since whenever either cooking oil or food can produce a lot of carbonyl compounds when heated. 从分布上来看,直链的羰基化合物的浓度远远高于支链和环状的羰基化合物的浓度。因为无论是烹调油或者食物加热时都可以产生大量的羰基化合物。
- Based on the molecular polarizability effect index,a formula of three parameters was proposed to calculate the boiling point of aliphatic aldehydes and alkanones. 本文讨论了分子极化效应指数[5]与脂肪族醛酮沸点的关系,力求寻找到一个适用范围广,并且具有分子结构特征的计算脂肪族醛酮沸点的计算公式。
- After substrate survey, this catalytic system showedmoderate to excellent chiral induction for aromatic aldehydes (70-95%ee) andmoderate chiral induction for aliphatic aldehydes (75%ee). 底物扩展表明,催化体系对芳香醛具有较好的手性诱导力(70-95%25ee),对于脂肪醛也取得了较好的对映选择性(75%25ee)。
- Keywords Atomic ordinal number;Topological index;Aliphatic aldehyde;Aliphatic alkanone;Boiling point;Correlativity; 关键词原子序数;拓扑指数;脂肪醛;脂肪酮;沸点;相关性;
- Study on application technology of aldehyde acid in aiding chrome tanning 乙醛酸助铬鞣应用工艺的研究
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- unsaturated aliphatic aldehyde 不饱和脂肪醛
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- aliphatic aldehyde 脂族醛
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗?那是个严峻的考验。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- Aliphatic hydrocarbons can be nitrated even with 13% nitric acid. 脂肪酸甚至能被13%25的硝酸硝化。