Study of Chiral Liquid Crystals ⅴ. Syntheses and Properties of Optically Active p-Acyloxy Benzoic Phenol Ester and ρ-Acyloxy Phenol Ester Liquid Crystals 手性液晶的研究&Ⅴ.对光活性的酰氧基苯甲酸酯类和酰氧基苯酚酯类
The concentration of C and O in PCBs is high and the principal oxygen-containing functional groups in PCBs are alcohol, phenol, ester, lactone, anhydride and ether. 热解炭中C和O的含量高,含氧官能团主要为醇、酚、酯、内酯、酸酐和醚,有大量芳香稠环的存在,热解温度越高,芳构化越高;
The chemical constituents of allelopathic fractions were identified by GC-MS as organic acids, phenol, aldehyde, ketone, benzene, amine, nitrile, ester and some other compounds, some of which were allelochemicals. 乙酸乙酯、正丁醇、XAD4树脂提取组分中的有机化合物种类有:有机酸、酚、醛、酮、苯、胺、腈、酯等,其中大多为化感物质。
The result shows that besides the main component acetic acid, there are many kinds of ketone compound, phenol compound, ester compound, aldehyde and alcohol compound in the wood vinegar. 实验结果表明,木醋液中除了主要成分乙酸外,另外还含有含量较少、种类繁多的酮类化合物、酚类化合物、酯类、醛类和醇类等化合物。
Using Tobacco-seed Oil Instead of Tung Oil to Make Phenol Aldehyde and ester Gum Paint 用烟籽油代替桐油制酚醛、酯胶树脂漆
We find that the bio-oil contains a lot of organic material such as acid, phenol, ketones, ester, complicated composition, which resulted in the bio-oil being easy to deteriorate at normal temperature with oxygen existence condition. 发现生物质热裂解油中含有大量的有机物如酸、酚、酮、酯等,成分复杂,在常温、有氧的条件下很容易发生变质,必须对生物质油进行进一步的精制。