利用乙酰丙酸和苯酚缩合反应制取双酚酸。
In this paper, the progress on diphenolic acid preparation by condensation reaction of levulinic acid and phenol is introduced.
研究了极低酸水解对稻壳转化乙酰丙酸和纤维结构的影响。
The effects of extremely-low-concentration acid hydrolysis on levulinic acid production from rice husk and cellulosic structure were investigated.
结论该方法准确、简便、快速，可用于盐酸氨基乙酰丙酸及其散剂的质量控制。
It could be used for quality control of aminolevulinic acid and aminolevulinic acid.
但是，由于乙酰丙酸酯主要由葡萄糖或石油基产物转化生产，量少价高，至今未能广泛使用。
However, because of levulinic acid ester is mainly composed of glucose or petroleum-based products into production, less price is high, have been unable to widespread use.
本文对植物纤维素水解渣高温加压水解生产乙酰丙酸和综合利用制木素活性炭的工艺进行了探讨。
In this paper, The residua of lignocellulose hydrolysis were as raw materials for producing levulinic acid and lignin active carbon. The technology and reaction condition are optimized.
实验考察了不同温度和硫酸浓度对葡萄糖分解的主要产物5-羟甲基糠醛和乙酰丙酸浓度的影响。
In addition, the effects of temperature and concentration of sulfuric acid on the concentration of LA and 5-hydroxymethyl furfural were shown.
用薄层色谱法监测溴素溴化乙酰丙酸乙酯生成3-溴乙酰丙酸乙酯的反应过程，优化了反应条件，方法简单，快速，准确。
A simple TLC method for monitoring the synthetic process of 3-bromo-ethyl levulinate is reported, and the reaction condition is optimized.
本文针对目前高温高压条件下酸法水解过程中存在的设备腐蚀问题，采用常温常压条件制备乙酰丙酸，研究了葡萄糖水解反应动力学，以及酮对水解过程中产生的腐黑物的抑制作用。
Levulinic acid is always prepared by acid hydrolysis under the condition of high temperature and high pressure, so the problem exists in the corrosion for the equipment.
阿司匹林，对乙酰氨基酚和异丁苯丙酸都可以用来减少痛苦和发烧。
Aspirin, acetaminophen and ibuprofen can all be used to reduce pain and fever.
海洋微生物的代谢物种类主要有五大类，即：胺及酰胺类、吲哚生物碱类、乙酰配基类、环肽类及聚丙酸酯类。
The metabolites of marine microorganisms include: amines and amides indole alkaloids acetogenines cyclic peptide and polypropionates.
海洋微生物的代谢物种类主要有五大类，即：胺及酰胺类、吲哚生物碱类、乙酰配基类、环肽类及聚丙酸酯类。
The metabolites of marine microorganisms include: amines and amides indole alkaloids acetogenines cyclic peptide and polypropionates.
应用推荐