查询词典 phosphorous acid

The effects of phosphorous acid modification on the thermal stability and photocatalytic activity of anatase TiO2 were mainly investigated.

重点研究了磷酸修饰对纳米锐钛矿相TiO2的热稳定性及光催化活性的影响。

The effects of phosphorous acid modification on the thermal stability and photocatalytic activity of anatase TiO_2 were mainly investigated.

光催化测试表明，经过高温热处理的适量H_3PO_4修饰的TiO_2表现出了优越于国际商品P25-TiO_2的活性。

Mesitylene and phosphorous acid were the better solvent and catalyst,respectively.

筛选得到了用均三甲苯为溶剂和用亚磷酸为催化剂，并通过合成及精制试验得到了适宜的制备2，4′ BPS的制备条件，2，4′ BPS的总收率达18 4%，纯度大于95%。

The main products are: phosphorous acid, acetyl chloride, cyclohexyl chloride.

主要产品有：亚磷酸、乙酰氯、环已甲酰氯。

Originally techniques dropped formaldehyde into the mixture of phosphorous acid and monosodium of imino diacetic acid in high temperature.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

On the basis of the preparation of special-grade sodium hypophosphite by one-step method in the high-speed reactor,the produced sodium hypophosphite and the byproduct calcium phosphite were further converted to higher-purity hypophosphorous acid and phosphorous acid products by ionic membrane electrodialysis.

在作者开发的高速反应器一步法制专用级次磷酸钠的基础上进一步将生成的次磷酸钠和副产的亚磷酸氢钙用离子膜电渗析法制成纯度更高的次磷酸及亚磷酸产品，产品质量升级，回收利用了副产亚磷酸氢钙，并减少了原料烧碱的用量。

The test results show that density and the total phosphorus content of HEDPA have linear relationship. The content of phosphorus can be converted by subtracting the contents of impurities, namely phosphorous acid and orthophosphoric acid, so that the content of active component can be determined directly with density.

通过实验发现密度与HEDPA中总磷含量呈线性关系，减去杂质即亚磷酸和正磷酸含量换算出磷含量，即可通过测量密度直接测出活性组分的含量。

In this paper,the method for synthesis of 5 new phosphonic acid products,from the reactions of 2-amine thiadiazole and different aldehydes with phosphorous acid by the melting method or the solvent method,was introduced.

用2-氨基噻二唑、醛与亚磷酸反应，应用融熔法与溶剂法合成了一系列新的噻二唑膦酸，并用IR、1HNMR、31PNMR等方法对化合物进行了表征。

The synthesis of the large single crystals of AlPO〓or SAPO molecular sieves by using phosphorous acid as the source of phosphorus was studied.

4进行了亚磷酸为磷源合成磷酸铝分子筛单晶的实验研究。合成了一系列磷酸铝或硅磷酸铝分子筛单晶。

When phosphorous acid was used to synthesize SAPO molecular sieves, it was found that the relationship among the reaction mixture composition, crystallization condition and products was different from that in AlPO〓-moleeular sieve synthesis.

研究发现，亚磷酸作磷源合成磷酸铝分子筛的时候，可以拓展一些磷酸铝、硅磷酸铝分子筛合成所使用的模板剂的范围。

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。