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单词 Molecular sieves
释义

Molecular sieves

英语例句库

The method of liquid phase rearrangement of styrene oxide to phenylacetaldehyde catalyzed by SAStype solid acids and molecular sieves was studied.

研究了SAS型固体酸和几种分子筛上氧化苯乙烯液相重排成苯乙醛的反应,考察了催化剂的活性、选择性和和稳定性。

Mesoporous molecular sieves are of great academic and practical importance in heterocatalysis. In this review, we mainly summarized the progress made in its catalytic application.

中孔分子筛在多相催化领域具有重要的理论研究和实际应用价值,综述了国内外的学者在其催化应用方面所取得的进展。

原声例句
科学大揭秘

Presently, carbon dioxide is removed from the air by a machine called a 'zeolite', which acts as a 'molecular sieve'.

目前,二氧化碳是通过一种称为“沸石”的机器从空气中去除的,该机器充当“分子筛”。

生活大爆炸 第4季

So, hey, speaking of money, how are you feeling about helping the physics department get a cryogenic centrifugal pump and molecular sieve?

说到钱 你想不想帮物理系添置一个低温离心泵和一个分子筛?

中文百科

分子筛 Molecular sieve

(重定向自Molecular sieves)
4А 分子筛
A sealed canister, commonly filled with silica gel and other molecular sieves used as desiccant in drug containers to keep contents dry. The US Quarter in the photo is 26.5 millimetres (1.04 in) in diameter.
Vials of mesoporous silica
Bottle of 4A molecular sieves.

分子筛是一种包含有精确和单一的微小孔洞的材料,可用于吸附气体或液体。

足够小的分子可以通过孔道被吸附,而更大的分子则不能。与一个普通筛子不同的是它在分子水平上进行操作。例如,一个水分子小到可以通过但比它大一点的分子就不行。因此,分子筛常用用来作干燥剂。一个分子筛能吸附高达其自身重量22%的水分。

通常分子筛由铝硅酸盐矿组成,也有合成的混合物或化合物。这些化合物具有开放结构使得小分子能够扩散,如:粘土,多孔玻璃,微孔木炭,活性炭等。

分子筛常被应用到石油工业,特别是用来纯化气体。例如可用硅胶吸附天然气中的汞对铝制管道和其他液化设备的腐蚀。

英语百科

Molecular sieve 分子筛

(重定向自Molecular sieves)
A sealed canister, commonly filled with silica gel and other molecular sieves used as desiccant in drug containers to keep contents dry. The US Quarter in the photo is 26.5 millimetres (1.04 in) in diameter.
Vials of mesoporous silica
Bottle of 4A molecular sieves.
4А 分子筛

A molecular sieve is a material with pores (very small holes) of uniform size. These pore diameters are of the dimensions of small molecules, thus large molecules cannot be adsorbed, while smaller molecules can. Many molecular sieves are used as desiccants. Some examples include activated charcoal and silica gel.

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更新时间:2025/6/19 2:26:38