氧化铝

The change rules of precipitation ratio, microstructure and particle size and the effect of oleic acid on the seed precipitation of sodium aluminate solution were investigated. According to these experimental results, the total energy and electronic structure of oleic acid locating on gibbsite (001) and face (100) with different modes were calculated, and the equilibrium and growth morphology of the systems were analyzed.

研究添加油酸杂质时，铝酸钠溶液分解过程中分解率、氢氧化铝产品的形貌和粒度的分布变化规律；计算以各种不同方式位于氢氧化铝的(001)和(100)面时油酸分子的总能量和电子结构，并分析各体系的平衡形态及生长习性。

School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China）Abstract: The change rules of precipitation ratio, microstructure and particle size and the effect of oleic acid on the seed precipitation of sodium aluminate solution were investigated. According to these experimental results, the total energy and electronic structure of oleic acid locating on gibbsite (001) and face (100) with different modes were calculated, and the equilibrium and growth morphology of the systems were analyzed.

摘 要：研究添加油酸杂质时，铝酸钠溶液分解过程中分解率、氢氧化铝产品的形貌和粒度的分布变化规律；计算以各种不同方式位于氢氧化铝的(001)和(100)面时油酸分子的总能量和电子结构，并分析各体系的平衡形态及生长习性。

Calculation results indicate that the total energy increases when oleic acid is on the surfaces of (001) and (100) of gibbsite respectively. This can explain that the stability of systems decrease when there is some oleic acid on the surface of gibbsite. The calculation results of equilibrium morphology and growth habit show that the volume of growth crystal is larger when some oleic acids with "horizontal" mode exist on the surfaces (001) and (100) of gibbsite.

计算结果表明：油酸接近氢氧化铝(001)和(100)表面时，体系总能量升高，说明油酸的存在可降低体系的稳定性；油酸在氢氧化铝(001)和(100)表面上时，油酸分子呈"卧"式时，长大后晶粒体积大于无杂质存在的情况，而油酸分子呈"立"式时，长大后体积小于无杂质时晶粒的体积。

The results show that high content and uniform dispersed nano-alumina in composite coatings are obtained by the synergy of mined and Arabic gum.

结果表明：阴离子型表面活性剂十二烷基苯磺酸钠与阿拉伯树胶的协同作用对纳米氧化铝的分散效果最好，复合镀层中的纳米氧化铝含量较高。

Using inorganic aluminous salts as precursors and hexamethylenetetramine as the catalyst, alumina nanonpowder was fabricated by sol-gel procedure and then incorporated in the preparation of body batch for thickly-glazed, thin-bodied celadon wares.

以无机铝盐为先驱体，六次甲基四胺为催化剂，采用溶胶－凝胶法制备了纳米氧化铝粉体，将纳米氧化铝粉体应用于薄胎厚釉青瓷瓷胎中，研究了粉体对青瓷瓷胎的增强作用。

Alumina ceramic is one of the most important applied materials for electronic packaging. However, it has to be joined with other materials due to the limitation of its intrinsic property.

氧化铝陶瓷是在电子封装中被广泛运用的材料之一，但由于氧化铝陶瓷的一些固有特性限制，通常需要与其他材料组合在一起使用。

Our company is a magnesia oxide, alumina production and sales of private enterprise, dedicated to a variety of magnesia oxide, alumina development and production.

13969308234我公司是氧化镁，氧化铝生产及销售为一体的民营企业，致力于各种氧化镁，氧化铝的开发和生产。

The experimental results show that the yield of the maleic anhydride is maximum when the molar ra_tio of vanadium pentoxide to molybdenum trioxide is equal to about two and the quantities of vanadium are nearly five times more than those of phosphorus.

实验表明：以氧化铝为载体用于苯氧化制顺酐的五氧化二钒催化剂，当五氧化二钒与三氧化铝的摩尔比为2左右和钒磷比约为5时，顺酐的收率最大，并根据催化剂的半导体电子理论和酸碱理论进行了解释。

The conditions and mechanism of Zn2+ loaded on zeolite 13X and alumina werestudied by the orthogonal test. A series of desulfurizing adsorbents were prepared withzeolite 13X, alumina and 5A molecular sieves loaded with Zn2+ and Cu2+ by themethod of impregnation at ambient termperature and desulfurizing capability of thosewere investigated in model gasoline.

采用正交试验的方法，研究锌离子在 13X 和活性氧化铝上负载条件及锌离子负载机理，并采用室温浸渍法，将锌离子和铜离子负载于 13X 分子筛、活性氧化铝、5A 分子筛上，制备了一系列改性型的脱硫吸附剂，考察了这些脱硫吸附剂在汽油模拟体系中的脱硫性能。

The gold electrode is available in determination of purine and pyrimidine bases.

实验优化了组氨酸在氧化铝修饰碳糊电极上吸附及进行还原反应的条件，探讨了组氨酸在氧化铝修饰碳糊电极上的还原机理。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了