磷钨酸盐

But now, there not are the reports on the use of 〓and its salts in the etherification of FCC light gasoline.

但目前尚无磷钨酸及其盐用于催化裂化轻汽油醚化反应的报道。

Three new-type charge-transfer salts were synthesized based on the reaction of three kinds of basic dye (crystal violet, safranine T, methylene blue BB, respectively) and tungstophosphoric acid of Keggin structure.

报道了用Keggin结构的磷钨酸与碱性染料结晶紫、碱性藏红T和碱性湖兰BB反应形成的3种新型电荷转移盐。

Their specific surface area and acid strength were measured, and their catalyt and SBA-15 were ic performance was evaluated in the synthesis of fructone by acetalization of ethyl acetoacetate with ethylene glycol.

用浸渍法制备了一系列负载型磷钨酸及其铯盐催化剂，载体包括超稳Y沸石、脱铝超稳Y沸石、SiO2和SBA-15，测定了催化剂的比表面积和酸强度，并在乙酰乙酸乙酯与乙二醇液相缩合制取苹果酯反应中考察了催化剂的性能。

Supported 12-Phosphotungstic Acid and Its Salts as Catalysts for the Synthesis of Fructone and Fructone-B;2. Their catalytic activities were measured by synthesis of fructone-B from ethyl acetoacetate and 1,2-propanediol.

制备了一系列以脱铝超稳Y沸石为载体的磷钨酸及其铯盐催化剂，考察了催化剂在以乙酰乙酸乙酯和1，2-丙二醇为原料催化合成草莓酯反应过程中的性能。

In this paper tungstosilicic triethanolamine salt and tungstophoric triethanolamine salt were prepared and used as catalysts in the synthesis of n-butyl lactate ,The synthetic conditions with tungstosilicic triethanolamine salt as catalyst were also examined.

合成了硅钨三乙醇胺盐和磷钨酸三乙醇胺盐，并以它们为催化剂，合成了乳酸正丁酯。

This dissertation also studied the direct synthesis of H_2O_2 from H_2 and O_2 undernormal pressure over polyoxometalates-supported Pd catalysts in the absence of anyliquid acid or halide additives in the liquid phase.

本学位论文中还针对常压下从氢气和氧气直接合成过氧化氢反应考察了在液相不共存任何酸和卤素助剂的情况下，磷钨杂多酸铯盐负载的金属Pd为催化剂的催化性能。

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。