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单词 Manganese dioxide
释义

Manganese dioxide

原声例句
双语版 TED-Ed 演讲精选

The electrons travel through, say, a light bulb, and then return to the battery at the positive terminal, where they're accepted by manganese dioxide.

电子穿过灯泡之类的用电器,然后回到电池正极,被二氧化锰接收。

化学 Crash Course

In here elemental zinc is going to react with manganese dioxide, also known as manganese four oxide, to produce manganese three oxide and zinc oxide.

在这里元素锌将与二氧化锰(也称为四氧化锰)反应生成三氧化锰和氧化锌。

中文百科

二氧化锰

泥质石灰岩裂口上产生的二氧化锰树枝状结晶

二氧化锰(化学式:MnO2)为黑色或棕色的固体,是锰最稳定的氧化物,经常出现于软锰矿及锰结核中。二氧化锰主要用途为制造干电池,如碳锌电池和碱性电池;也常在化学反应中作为催化剂,或作为酸性溶液中的强氧化剂。在1967年共使用了500000吨的软锰矿。二氧化锰也经常被用来制作高锰酸钾(KMnO4)。它常被用作有机化学中的氧化剂。也可用来当制造氧气的催化剂。

英语百科

Manganese dioxide 二氧化锰

泥质石灰岩裂口上产生的二氧化锰树枝状结晶

Manganese(IV) oxide is the inorganic compound with the formula MnO
2
. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules. The principal use for MnO
2
is for dry-cell batteries, such as the alkaline battery and the zinc-carbon battery. MnO
2
is also used as a pigment and as a precursor to other manganese compounds, such as KMnO
4
. It is used as a reagent in organic synthesis, for example, for the oxidation of allylic alcohols. MnO
2
in the α polymorph can incorporate a variety of atoms (as well as water molecules) in the "tunnels" or "channels" between the magnesium oxide octahedra. There is considerable interest in α-MnO
2
as a possible cathode for lithium ion batteries.

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更新时间:2025/6/24 2:59:11