1·In this paper, the progress on diphenolic acid preparation by condensation reaction of levulinic acid and phenol is introduced.
利用乙酰丙酸和苯酚缩合反应制取双酚酸。
2·The effects of extremely-low-concentration acid hydrolysis on levulinic acid production from rice husk and cellulosic structure were investigated.
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。
3·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.
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。
4·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.
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。
5·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.
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。