查询词典 levulinic

The results showed that levulinic acid was stable in near-critical water.

实验结果表明：近临界水中乙酰丙酸较稳定，在280℃、反应32h下，乙酰丙酸的转化率仅为7.0％。

As a new kind of green platform chemicals, levulinic acid has highly attracted the attention for its wide range of applications.

在众多的化工产品中，乙酰丙酸是一种新型的绿色平台化合物，因其广泛的用途而备受关注。

The fraction between the temperature range of 130℃ and 160℃ wascollected and the levulinic concentration was 98%.

洗脱液经浓缩后，在0.00266MPa下精馏，收集130℃-160℃的馏分，最终得到乙酰丙酸的纯度为98％。

This study proposed a method for making levulinic acid using abundant wheat straw.

本研究考查了利用小麦秸秆为原料制备乙酰丙酸的工艺条件。

As a new chemical platform and a pharmaceutical intermediates, Levulinic acid uses extensively as an important chemical raw materials.

作为制备多种化工产品的新型平台化合物和医药中间体，乙酰丙酸用途广泛，是重要的化工原料。

As a new kind of green platform chemical s, levulinic acid has highly attracted the attention for its wide range of applicati.

在众多的化工产品中，乙酰丙酸是一种新型的绿色平台化合物，因其广泛的用途而备受关注。

The production of diphenolic acid from levulinic acid and phenol catalyzed by hydrochloric acid was studied.

论文研究了以乙酰丙酸和苯酚为原料，以盐酸为催化剂催化合成双酚酸的工艺。

The effects of temperature, organic acids and residence time on the yields of 5-hydromethylfurfural (5-HMF) and levulinic acid were investigated.

对不同温度、有机酸和反应停留时间对果糖分解的主要产物——5-羟甲基糠醛(5-HMF)和乙酰丙酸收率的影响进行了考察。

Under optimized conditions, yield of levulinic acid is 38.426%, which is near to the value by estimation of the model.

在调酸催化水解工艺条件下，目标产物收率为38.426%，与模型估计值接近。

Levulinic acid was prepared by solid SO4(superscript 2-)/Al2O3-TiO2 catalyst from cellulose in water.

以纤维素为原料，固体SO4(上标 2-)/Al2O3-TiO2为催化剂，以水为溶剂制备乙酰丙酸。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。