olefin

简明释义

英[əʊləfɪn]美[ˈoʊləfɪn]

n. 烯烃

英英释义

单词用法

同义词

反义词

例句

1.Propylene copolymer, polypropylene composition, use thereof, transition metal compounds, and catalysts for olefin polymerization.

丙烯共聚物，聚丙烯组合物及其用途，过渡金属化合物和烯烃聚合催化剂。

2.The olefin cracking and the pentene isomerization over zeolites are two very important reactions in the petrochemical industry.

分子筛催化的烯烃裂解以及戊烯异构化是两个重要的石油化工过程。

3.The higher the olefin trap temperature, the lower the ability of adsorbing olefins.

烯烃的穿透性随碳数的降低和烯烃阱温度的升高而增加。

4.Application and preparation of a non - hydrogenation reducing - olefin catalyst were introduced.

介绍了一种非加氢降烯烃催化剂的制备及应用。

5.Supported catalysts of olefin polymerization were prepared by interacting magnesium alkyls with chlorinated agents, and electron donors.

由烷基镁、氯化试剂及电子给予体制备了烯烃聚合载体催化剂。

6.It was validated that ethylene is the origination olefin of methanol to propylene by experiments.

通过实验验证了乙烯是甲醇转化制丙烯过程中的起始烯烃产物。

7.We use synthetic materials such as nylon, polyester, acrylic or olefin.

用合成纤维，像尼龙、 多元酯、压克力或烯属烃。

8.Application and preparation of a non-hydrogenation reducing-olefin catalyst were studied.

研究了一种非加氢降烯烃催化剂的制备及应用。

9.The relationship between olefin content in gasoline and exhaust emission of gasoline engine is discussed.

讨论了汽油中的烯烃与发动机排放之间的关系。

10.The production of polyethylene involves the polymerization of ethylene, which is an important type of olefin 烯烃.

聚乙烯的生产涉及乙烯的聚合，乙烯是一种重要的olefin 烯烃。

11.In the petrochemical industry, olefins 烯烃 are crucial for creating various types of plastics.

在石油化工行业，olefins 烯烃 对于制造各种塑料至关重要。

12.The market for olefin 烯烃 derivatives is expected to grow significantly in the coming years.

未来几年，olefin 烯烃 衍生物的市场预计将显著增长。

13.Synthetic rubber is often produced from olefins 烯烃 due to their versatile properties.

合成橡胶通常是由olefins 烯烃 生产的，因为它们具有多种特性。

14.The chemical reactions involving olefins 烯烃 can lead to a variety of useful products.

涉及olefins 烯烃 的化学反应可以产生多种有用的产品。

作文

In the world of chemistry, understanding various compounds and their properties is crucial for advancements in multiple industries. One such compound that plays a significant role in manufacturing and chemical processes is olefin (烯烃). Olefin refers to a class of hydrocarbons that contain at least one carbon-to-carbon double bond. These compounds are unsaturated, meaning they have fewer hydrogen atoms than saturated hydrocarbons, which only contain single bonds between carbon atoms. This unique structure gives olefins distinct chemical properties that make them valuable in various applications. The most common type of olefin is ethylene, which is produced in large quantities and serves as a building block for many other chemicals. Ethylene is not just a simple gas; it is a vital component in the production of plastics, antifreeze, and synthetic fibers. Another important olefin is propylene, which is used to create polypropylene, a widely used plastic in packaging, automotive parts, and textiles. The versatility of olefins is further highlighted in their use in the petrochemical industry. They can undergo various reactions, such as polymerization, where small molecules combine to form larger chains. This process is fundamental in creating polymers, which are essential materials in everyday products. For instance, when ethylene undergoes polymerization, it forms polyethylene, one of the most commonly used plastics worldwide. Moreover, olefins can also be utilized in the production of detergents and surfactants. Their ability to interact with both water and oil makes them effective in breaking down stains and dirt, which is why they are often included in household cleaning products. The presence of olefins in these products showcases their importance beyond industrial applications, as they contribute to our daily lives in significant ways. Despite their advantages, the production and use of olefins also raise environmental concerns. The extraction and processing of fossil fuels, which are the primary sources of olefins, can lead to pollution and greenhouse gas emissions. As a result, researchers are exploring greener alternatives, such as bio-based olefins derived from renewable resources like plant materials. This shift towards sustainability aims to reduce the environmental impact associated with traditional olefin production. In conclusion, olefins (烯烃) are essential compounds in the field of chemistry, with a wide range of applications that affect various industries. From the creation of plastics to their role in cleaning products, olefins demonstrate their versatility and significance. However, as we continue to rely on these compounds, it is crucial to consider their environmental impact and seek sustainable alternatives. Understanding olefins not only enriches our knowledge of chemistry but also encourages responsible practices in their production and use.