molecular sieve

简明释义

分子筛

英英释义

例句

1.In the process of purifying water, a molecular sieve can remove larger contaminants.

在净化水的过程中，分子筛可以去除较大的污染物。

2.The molecular sieve is crucial for drying natural gas before it is transported.

分子筛对于在运输前干燥天然气至关重要。

3.We employed a molecular sieve in our chemical reactor to enhance reaction efficiency.

我们在化学反应器中使用了分子筛以提高反应效率。

4.A molecular sieve can selectively adsorb certain molecules based on size.

分子筛可以根据分子大小选择性吸附某些分子。

5.The laboratory used a molecular sieve to separate the gas mixtures effectively.

实验室使用了一个分子筛来有效分离气体混合物。

作文

In the world of chemistry and materials science, the term molecular sieve refers to a porous material that can separate molecules based on their size and shape. This unique property makes molecular sieves invaluable in various industrial applications, including gas separation, drying, and purification processes. The structure of a molecular sieve typically consists of a network of tiny pores that allow smaller molecules to pass through while blocking larger ones. This selective permeability is crucial for many chemical processes, as it enables the efficient separation of desired products from unwanted impurities.One of the most common types of molecular sieve is zeolite, which is a naturally occurring mineral with a crystalline structure. Zeolites have been used for centuries in various applications, but their use in modern chemistry has expanded significantly. For example, in the petroleum industry, zeolites are employed to catalyze reactions and improve the efficiency of refining processes. By selectively adsorbing certain hydrocarbons, zeolites help to maximize the yield of valuable products while minimizing waste.Another important application of molecular sieves is in the field of gas separation. In many industrial processes, it is essential to separate gases with similar properties. Molecular sieves can effectively achieve this by exploiting the differences in molecular size. For instance, in the production of oxygen from air, a molecular sieve can be used to selectively adsorb nitrogen, allowing pure oxygen to be collected for medical or industrial use.The ability of molecular sieves to remove water from various substances is another critical application. In many industries, moisture can lead to degradation of products or interfere with chemical reactions. By utilizing molecular sieves, manufacturers can ensure that their products remain dry and stable, thereby enhancing their quality and shelf life. This is particularly important in the pharmaceutical industry, where even trace amounts of water can compromise the efficacy of medications.Moreover, the versatility of molecular sieves extends beyond industrial applications. They are also used in everyday products such as cat litter and air fresheners, where they help to absorb odors and moisture. In recent years, researchers have been exploring the potential of molecular sieves in environmental applications, such as capturing carbon dioxide from the atmosphere or removing pollutants from water.In conclusion, the significance of molecular sieves in both industrial and everyday contexts cannot be overstated. Their ability to selectively separate molecules based on size and shape opens up a wide range of possibilities for improving efficiency and sustainability in various processes. As research continues to advance in the field of materials science, it is likely that we will discover even more innovative uses for molecular sieves. Understanding and harnessing the potential of these remarkable materials will be crucial for addressing some of the pressing challenges facing our world today.

在化学和材料科学的世界中，术语分子筛指的是一种多孔材料，可以根据分子的大小和形状进行分离。这种独特的性质使得分子筛在各种工业应用中变得不可或缺，包括气体分离、干燥和净化过程。分子筛的结构通常由微小孔隙网络组成，允许较小的分子通过，同时阻挡较大的分子。这种选择性渗透性对于许多化学过程至关重要，因为它能够有效地将所需产品与不需要的杂质分离。最常见的分子筛类型之一是沸石，这是一种具有晶体结构的天然矿物。沸石在各种应用中已经使用了几个世纪，但在现代化学中的使用显著扩大。例如，在石油工业中，沸石被用来催化反应并提高精炼过程的效率。通过选择性地吸附某些烃，沸石帮助最大化有价值产品的产量，同时最小化废物。分子筛的另一个重要应用是在气体分离领域。在许多工业过程中，分离具有相似性质的气体是至关重要的。分子筛可以通过利用分子大小的差异有效实现这一点。例如，在从空气中生产氧气的过程中，可以使用分子筛选择性地吸附氮气，从而收集纯氧供医疗或工业使用。分子筛去除各种物质中水分的能力是另一个关键应用。在许多行业中，湿气可能导致产品降解或干扰化学反应。通过利用分子筛，制造商可以确保其产品保持干燥和稳定，从而提高其质量和保质期。这在制药行业尤为重要，因为即使是微量水分也可能危及药物的有效性。此外，分子筛的多功能性超越了工业应用。它们也用于日常产品，如猫砂和空气清新剂，在这些产品中，它们有助于吸收气味和湿气。近年来，研究人员一直在探索分子筛在环境应用中的潜力，例如捕获大气中的二氧化碳或去除水中的污染物。总之，分子筛在工业和日常生活中的重要性不容小觑。它们根据大小和形状选择性分离分子的能力为改善各种过程的效率和可持续性开辟了广泛的可能性。随着材料科学领域的研究不断进展，我们可能会发现更多创新的分子筛用途。理解和利用这些非凡材料的潜力将对解决我们今天面临的一些紧迫挑战至关重要。