molecular sieve

简明释义

分子筛

英英释义

例句

1.In the production of oxygen, a molecular sieve is essential for removing nitrogen.

在氧气生产中，分子筛对于去除氮气是必不可少的。

2.The molecular sieve can be used in water purification systems to filter out impurities.

分子筛可以用于水净化系统，以过滤杂质。

3.The laboratory used a molecular sieve to separate small gas molecules from larger ones.

实验室使用分子筛将小气体分子与大气体分子分离。

4.To enhance the efficiency of the drying process, a molecular sieve is often employed.

为了提高干燥过程的效率，通常会使用分子筛。

5.The molecular sieve technology is widely used in the petrochemical industry.

分子筛技术在石油化工行业得到广泛应用。

作文

Molecular sieves are materials with tiny pores of uniform size that can separate molecules based on their size and shape. They play a critical role in various industrial processes, including gas separation, purification, and catalysis. The principle behind a molecular sieve (分子筛) is simple yet powerful: it allows smaller molecules to pass through while blocking larger ones. This unique property makes them invaluable in fields such as petrochemicals, pharmaceuticals, and environmental engineering.One of the most common types of molecular sieve (分子筛) is zeolite, a naturally occurring mineral with a crystalline structure. Zeolites have been used for centuries, but their industrial applications have expanded dramatically in recent decades. For example, in the petrochemical industry, zeolites are used to convert crude oil into gasoline and other valuable products. They help to crack larger hydrocarbon molecules into smaller, more useful ones, enhancing the efficiency of the refining process.In the realm of gas separation, molecular sieves (分子筛) are employed to purify gases by selectively adsorbing certain molecules. For instance, in the production of oxygen from air, a molecular sieve (分子筛) can be used to trap nitrogen, allowing pure oxygen to be collected. This process is crucial in medical settings, where high-purity oxygen is essential for patient care.Additionally, molecular sieves (分子筛) are also used in the field of environmental science. They can effectively remove pollutants from wastewater and air, contributing to cleaner environments. For example, they can capture volatile organic compounds (VOCs) from industrial emissions, preventing these harmful substances from entering the atmosphere. This application highlights the importance of molecular sieves (分子筛) in sustainability efforts and regulatory compliance.Another fascinating application of molecular sieves (分子筛) is in the pharmaceutical industry. Here, they serve as catalysts in chemical reactions, speeding up the process and improving yields. The ability to control the size of the molecules that react with each other allows for more precise drug formulations. This specificity is vital in developing medications that target particular diseases without affecting surrounding healthy cells.Despite their many advantages, there are challenges associated with the use of molecular sieves (分子筛). For instance, they can become saturated over time, losing their effectiveness and requiring regeneration or replacement. Moreover, the initial cost of implementing molecular sieves (分子筛) in industrial processes can be significant, which may deter some companies from using them. However, the long-term benefits often outweigh these concerns, especially when considering the potential for cost savings through improved efficiency and reduced waste.In conclusion, molecular sieves (分子筛) are remarkable materials that have transformed various industries by enabling the selective separation of molecules. Their applications range from petrochemical refining to environmental protection and pharmaceutical development. As technology advances, the potential uses for molecular sieves (分子筛) will likely expand even further, making them an essential component in the quest for more efficient and sustainable industrial practices.

分子筛是一种具有均匀小孔的材料，可以根据分子的大小和形状来分离分子。它们在各种工业过程中发挥着关键作用，包括气体分离、净化和催化。分子筛的原理简单却强大：它允许较小的分子通过，同时阻挡较大的分子。这一独特的特性使其在石油化工、制药和环境工程等领域中不可或缺。最常见的分子筛是沸石，这是一种具有晶体结构的天然矿物。沸石已被使用了数百年，但其工业应用在最近几十年中急剧增加。例如，在石油化工行业，沸石用于将原油转化为汽油和其他有价值的产品。它们帮助将较大的碳氢化合物分子裂解成较小、更有用的分子，提高了炼油过程的效率。在气体分离领域，分子筛被用于通过选择性吸附某些分子来净化气体。例如，在从空气中生产氧气的过程中，可以使用分子筛捕获氮气，从而收集纯氧。这一过程在医疗环境中至关重要，高纯度的氧气对患者护理至关重要。此外，分子筛还广泛应用于环境科学领域。它们可以有效去除废水和空气中的污染物，有助于清洁环境。例如，它们可以捕获工业排放中的挥发性有机化合物（VOCs），防止这些有害物质进入大气。这一应用突显了分子筛在可持续发展努力和法规合规中的重要性。另一个有趣的分子筛应用是制药行业。在这里，它们作为化学反应中的催化剂，加速过程并提高产量。控制参与反应的分子大小使得药物配方更加精确。这种特异性对于开发靶向特定疾病而不影响周围健康细胞的药物至关重要。尽管有许多优点，但使用分子筛也面临挑战。例如，随着时间的推移，它们可能会饱和，失去效力，需要再生或更换。此外，实施分子筛的初始成本可能很高，这可能会阻止一些公司使用它们。然而，从长远来看，考虑到通过提高效率和减少废物所带来的潜在成本节约，这些担忧往往是可以克服的。总之，分子筛是一种令人惊叹的材料，通过实现分子的选择性分离，改变了各个行业。它们的应用范围从石油化工精炼到环境保护和制药开发。随着技术的进步，分子筛的潜在用途可能会进一步扩大，使其成为追求更高效和可持续工业实践的重要组成部分。