查询词典 manganese dioxide

Manganese oxides, especially manganese dioxide, are widely used in the field of battery and catalysis. Its quality is vital to battery performance and catalysis activity. Therefore, it is all-important to prepare the active manganese oxides.

锰氧化物尤其是二氧化锰在电池和催化工业中已得到广泛的应用，其品质对电池的性能和催化剂的活性起着决定性的作用，因此合成高活性的锰氧化物显得非常重要。

This paper mainly introduced different oxidation methods,but oxygen,manganese dioxide and manganese sesquioxide were mainly studied.

本文通过采用不同的氧化剂氧化间氟甲苯合成间氟苯甲醛，重点研究了氧气，二氧化锰和三氧化二锰的氧化效果，分别研究了它们的氧化工艺条件以及固体氧化剂的循环利用，并初步探讨了它们的氧化机理。

According to the oxidation of potassium periodate,a new analytical method for the spectrophotometric rapid determination of manganese carbonate produced during bioreducing manganese dioxide was developed.

利用高碘酸钾的氧化性，建立了分光光度法快速测定由微生物还原二氧化锰生成的碳酸锰含量的方法。

The manganese dioxide is transformed into manganese sesquioxide at 650°C, and then react with toluene to produce benzaldehyde in the existence of surphric acid in a three phase reactor.

利用二氧化锰650度下灼烧得到三氧化二锰；使用该原料与中等浓度的硫酸和甲苯在反应器内进行固、油、水三相反应，反应结束后甲苯氧化成为产品苯甲醛。

The exploitation and supply of manganese ore,and the industry status about manganese alloy, electrolytic manganese, electrolytic manganese dioxide, trimanganese tetroxide and manganic salt were introduced and analyzed.

二氧化锰是电池最常用的正极材料，不论是天然二氧化锰，还是化学二氧化锰和电解二氧化锰，都必须用锰矿石为原料制造而成。

Manganese dioxide is a familiar katalyst of oxidation reaction,there are five kinds of crystal configuration of manganese dioxide that have known, and different kinds of crystal configuration of manganese dioxide have the different catalysis and natural life.

二氧化锰是一种常见的氧化反应催化剂，现在已知二氧化锰有5种不同的晶型结构，不同晶型结构的二氧化锰的催化功能及寿命也不相同。

Several mixed control samples of manganic manganous oxide, manganese dioxide and manganese sulfate with various sulfur content were prepared by adding sulfuric acid with known concentration into high pure manganic manganous oxide. Then they were dried and mixed, and the content of sulfur was determined by high frequency infrared ray carbon sulfur analyzer.

向高纯四氧化三锰中加入已知浓度的硫酸，制备不同含硫量的四氧化三锰、二氧化锰、硫酸锰的混合物控制样，将制备好的控制样干燥、混匀后，用高频红外碳硫分析仪分析控制样中的硫含量。

The manganese sulfate in the raffinate was recovered by alkaline oxidation process. Using ferrous sulfate as the catalyst, the conversion ratio of manganese dioxide was 84%, the content of manganese dioxide was 90%, which could reach the requirement of circle utilization.

萃余液中的硫酸锰采用碱式氧化法回收利用，以硫酸亚铁为催化剂，MnO_2的转化率可达84%，产品含量达到90%，可达到循环利用的要求。

A direct method to prepare nanometre catalyst of positive electrode for methyl alcohol fuel battery is to add strong oxidant to a mixed solution of manganese nitrate and some other metal nitrate, to coat them on the graphite electrode to have catalyst precursor produced, then to prepare the non-platinum nanometre catalyst of metal ion-doped manganese dioxide with carbon as a carrier by thermolytic reaction of the in-situ precursor. The prepared catalyst has the advantages of high electrical catalytic activity of methyl alcohol, high performance to protect against CO poison and low price, and it can lower the battery manufacturing cost effectively as well as can raise the entire electrical property of the battery so that the price performance and the market competitive edge of the battery are enchnaced effectively.

一种直接甲醇燃料电池阳极纳米催化剂的制备方法是在硝酸锰和其它金属硝酸盐的混合溶液中加入强氧化剂，涂抹于石墨电极上制成催化剂先驱体，通过先驱体在原位的热分解反应来制备以碳为载体的金属离子掺杂二氧化锰非铂纳米催化剂；制得的催化剂具有高的甲醇电催化活性、高的抗CO毒化性能以及低廉的价格等优点，可以有效地降低电池的制造成本，提高电池的整体电性能，从而有效地提高直接甲醇燃料电池的性能价格比及市场竞争能力。

During the researching of coagulation of fieshly formed manganese dioxide, it is found that the freshly formed manganese dioxide has more strong function of coagulation and filtration than the same dosage of ferric chloride at the lower dosage condition. With dynamic monitor of the coagulation process of freshly formed manganese dioxide, comparing with ferric chloride, the floccules formed speed of coagulation by freshly formed manganese dioxide is rapid, the size is big, the sediment speed swift.

在研究新生态二氧化锰混凝作用中，作者发现在低剂量条件下，与等当量的三氯化铁混凝剂相比，新生态二氧化锰具有更强的混凝、除浊和助滤效能；并且通过对新生态二氧化锰絮凝过程的动态监测，发现新生态二氧化锰与三氯化铁相比，混凝生成絮体颗粒速度更迅速，颗粒尺寸更大，沉速更快。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。