丁酸

TiO2 film was deposited on the stainless seel substrate by using Sol- Gel mehod with Ti(OB4) as a precursor.

采用钛酸正丁酯作为前驱体，通过溶胶-凝胶法在不锈钢基片上制备了TiO2纳米薄膜。

Due to the key challenge for complicated techniques and preparation, there were few reports about ternary systems. A series of polyimide/SiO_2-TiO_2 hybrid films with different contents of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor in situ with sol-gel method and both phases in situ. Chemical structure and micro-morphology of hybrid films were studied by means of IR, SEM and XRD.

本文以正硅酸乙酯和钛酸四丁酯为前驱体，采用原位溶胶-凝胶法和两相原位同步法制备了一系列不同含量的聚酰亚胺/SiO_2-TiO_2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性、电击穿场强和耐电晕性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method. Chemical structure, micro-morphology and thermal stability of hybrid films was studied by means of SEM, IR and XRD, TGA was also tested.

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺／SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method .

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺/SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

STUDY ON THE SYNTHESIS OF NORMAL BUTYL ACETATE OVER SILICOTUNGSTIC ACID SUPPORTED CATALYST Ⅱ.

文献名称负载杂多酸催化剂的表征及催化合成乙酸正丁酯的研究Ⅱ。

The method is as follows: n-butyl titanate, absolute ethyl alcohol, surfactant and concentrated hydrochloric acid are fully mixed and stirred for 4 to 6 hours under room temperature to obtain precursor solution, then the precursor solution is spinningly coated on a clean conductive glass substrate of an indium oxide tin coating, and then the conductive glass spinningly coated with the precursor solution is preserved for 25 to 72 hours at the temperature of between 20 and 30 DEG C and the relative humidity of between 50 and 75 percent below, and finally undergoes a high-temperature calcination at the temperature of between 350 and 700 DEG C.

将钛酸正丁酯，无水乙醇，表面活性剂和浓盐酸充分混合，在室温下搅拌4小时-6小时得到前驱剂，然后将前驱剂旋涂在清洁的氧化铟锡镀层的导电玻璃基底上，接着在20℃-30℃，相对湿度在50％-75％下，将旋涂有前驱剂的导电玻璃保存24小时-72小时，最后经过350℃-700℃高温煅烧。

It is found that in the presence of butyl titanate or stannous oxalate as a polycondensation catalyst the carboxyl content is not always on the increase in all high vacuum stage.

发现，钛酸四丁酯或草酸亚锡作为缩聚催化剂时，在整个高真空阶段羧基含量并不是一直增加的。

Succinic acid is an important organic acid and it is widely used in the food and pharmaceutical category.

琥珀酸，学名丁二酸，是一种常见的天然有机酸，广泛存在于人体、动物、植物和微生物中[1，2 ] 。

This paper reviews the research and development of electrochemical synthesis of succinic acid at home and abroad.

综述了国内外电解合成丁二酸的方法，详细介绍了电解反应过程中阴极材料、阳极材料、电解槽结构和隔膜材料的发展趋势。

By decreasing V to -270 mV at the end of period of logarithmic cell growth, succinic acid yield was increased from 70% to 85%.

在发酵过程中，通过降低V至-270 mV，使丁二酸的产率从70%提高到85%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。