exothermal

简明释义

英[/ˌɛksoʊˈθɜrməl/]美[/ˌɛksoʊˈθɜrməl/]

adj. 放热的；放能的

英英释义

单词用法

同义词

反义词

例句

1.The hydroxylation of phenol to produce dihydric phenol is a rapid and strongly exothermal reaction, the activity of the complex-oxide catalyst decreased rapidly.

苯酚直接羟化制备苯二酚为液固相的强放热快反应，催化剂的活性衰减很快。

2.The hydroxylation of phenol to produce dihydric phenol is a rapid and strongly exothermal reaction, the activity of the complex-oxide catalyst decreased rapidly.

苯酚直接羟化制备苯二酚为液固相的强放热快反应，催化剂的活性衰减很快。

3.The unusual exothermal transformation of nacre aragonite to calcite is perhaps resulted from the stored excess enthalpy in nanometer-size aragonite of nacre.

珍珠层文石这种异常的热相变特征可能是由纳米级文石储存的过剩焓引起的。

4.The exothermal reaction of the iron sulfide in oil storage tanks was the main cause of self-ignition of the oil products.

油品储罐中硫化亚铁氧化放热是引起油品自燃的主要原因。

5.The most important exothermal reactions in the crust can be expected from the chemical transformations of sulfides.

地壳中能够料想到的最重要的放热化学反应是硫化物的化学转变。

6.The reaction was highly exothermal, releasing a significant amount of heat.

这个反应是高度放热的，释放了大量的热量。

7.In an exothermal process, the system loses energy in the form of heat.

在一个放热过程中，系统以热量的形式失去能量。

8.The exothermal nature of the chemical reaction made it necessary to use safety precautions.

化学反应的放热性使得必须采取安全预防措施。

9.During the exothermal reaction, the temperature of the surrounding environment increased.

在放热反应过程中，周围环境的温度升高。

10.The exothermal reaction can be harnessed to generate electricity in certain applications.

这种放热反应可以被利用来在某些应用中产生电力。

作文

In the realm of chemistry, reactions can be categorized into two main types: endothermic and exothermal (放热的). Understanding these concepts is crucial for students and professionals alike, as they play a significant role in both theoretical and applied sciences. An exothermal reaction is one that releases energy, usually in the form of heat, to its surroundings. This release of energy can lead to an increase in temperature in the surrounding environment, making exothermal reactions particularly fascinating to study. One common example of an exothermal reaction is the combustion of fuels. When gasoline burns in an engine, it reacts with oxygen to produce carbon dioxide, water, and a significant amount of heat. This heat is what powers the engine and propels vehicles forward. Similarly, the combustion of wood in a fireplace is another exothermal process that not only provides warmth but also creates light and ambiance during cold winter nights. The significance of exothermal reactions extends beyond everyday occurrences; they are also vital in industrial applications. For instance, in the manufacturing of cement, a key step involves the exothermal reaction between calcium oxide and water, which generates heat and helps in the hardening process of the material. The heat produced accelerates the curing time, allowing construction projects to proceed more efficiently. Moreover, exothermal reactions are essential in biological processes as well. For example, cellular respiration is an exothermal process where glucose and oxygen react to produce carbon dioxide, water, and energy. This energy is critical for sustaining life, as it powers various cellular activities and functions. Without exothermal reactions, organisms would struggle to maintain their metabolic processes, leading to a breakdown in essential life functions. In contrast, understanding exothermal reactions also involves recognizing their potential hazards. The rapid release of heat can sometimes lead to dangerous situations, such as explosions or uncontrolled fires. For instance, certain chemical reactions that are exothermal can occur in laboratories if proper safety protocols are not followed. Thus, it is imperative for chemists and engineers to carefully monitor and control conditions during exothermal reactions to prevent accidents. In conclusion, the concept of exothermal reactions is a fundamental aspect of chemistry that has far-reaching implications in both natural and industrial settings. From the heat generated in combustion engines to the energy released in biological processes, exothermal reactions are integral to our understanding of the world around us. As we continue to explore the intricacies of chemical reactions, the importance of exothermal processes will undoubtedly remain a key focus in both research and practical applications.

在化学领域，反应可以分为两种主要类型：吸热反应和exothermal（放热的）反应。理解这些概念对学生和专业人士都至关重要，因为它们在理论和应用科学中都发挥着重要作用。exothermal反应是指向周围环境释放能量，通常以热的形式。这种能量的释放会导致周围环境温度的升高，使得exothermal反应特别引人注目。 一个常见的exothermal反应示例是燃料的燃烧。当汽油在发动机中燃烧时，它与氧气反应生成二氧化碳、水和大量热量。这种热量为发动机提供动力，推动车辆前进。同样，火炉中木材的燃烧也是另一个exothermal过程，它不仅提供温暖，还在寒冷的冬夜营造出光线和氛围。 exothermal反应的重要性超越了日常现象；它们在工业应用中也至关重要。例如，在水泥制造过程中，一个关键步骤涉及氢氧化钙和水之间的exothermal反应，该反应产生热量并帮助材料的硬化。所产生的热量加速了固化时间，使得建筑项目能够更高效地进行。 此外，exothermal反应在生物过程中同样重要。例如，细胞呼吸就是一种exothermal过程，其中葡萄糖和氧气反应生成二氧化碳、水和能量。这种能量对于维持生命至关重要，因为它为各种细胞活动和功能提供动力。没有exothermal反应，生物体将难以维持其代谢过程，导致基本生命功能的崩溃。 相反，理解exothermal反应也涉及认识到其潜在危险。热量的快速释放有时可能导致危险情况，例如爆炸或失控的火灾。例如，如果不遵循适当的安全协议，某些化学反应可能会在实验室中发生exothermal反应。因此，化学家和工程师必须仔细监测和控制exothermal反应的条件，以防止事故发生。 总之，exothermal反应的概念是化学的一个基本方面，对自然和工业环境都有深远的影响。从燃烧发动机中产生的热量到生物过程中释放的能量，exothermal反应对于我们理解周围的世界至关重要。随着我们继续探索化学反应的复杂性，exothermal过程的重要性无疑将仍然是研究和实际应用中的一个关键焦点。