1. Application of Supercritical CO2 in Environmental Engineering 1.1 Regeneration of Activated Carbon Adsorbents Activated carbon possesses strong adsorption capabilities and can be reused, making it widely applied in various fields such as medicine, food, environment, and new materials. It plays a significant role in environmental engineering by adsorbing the majority of toxic and environmentally unfriendly gases. However, the use of activated carbon also poses challenges. After reaching saturation with adsorbed impurities, activated carbon needs regeneration. Currently, there are several difficulties in the regeneration process. For instance, incomplete removal of impurities during regeneration can affect the adsorption capacity of activated carbon. Moreover, regeneration often requires large amounts of high-temperature inert gas

Industrial gases play a crucial role in production and manufacturing processes. For instance, nitrogen is used for inert atmosphere protection, hydrogen for hydrogenation reactions, and oxygen for oxidation processes. However, when using these industrial gases, you may encounter some common issues and faults. This article will address some of the common industrial gas problems and provide troubleshooting advice to help readers better handle these issues. It is essential to note that different gases may have different characteristics, and specific solutions should be provided by professionals. This article only offers general information on potential issues with bottled gases. 1.Gas Leak: Reasons and Solutions Possible reasons: Faulty Valve Seal: A damaged or aged valve seal can

Ⅰ.Introduction High-purity argon gas is a commonly used shielding gas in argon arc welding. Its high purity and inert characteristics make it an ideal choice for protecting the welding zone and ensuring high-quality welds. This article will explore the application of high-purity argon gas in welding, starting from the properties of argon gas. We will also discuss a range of issues that may arise in practical applications. Argon (Ar) is a chemical element and belongs to the group of inert gases. It has an atomic number of 18 and a chemical symbol of Ar, placing it in the 18th group of the periodic table. Positioned between oxygen and nitrogen, argon is an inert

Abstract: Chemical Vapor Deposition (CVD), abbreviated as CVD, is a commonly used technique for thin film fabrication, playing a significant role in the field of materials science and engineering. In the CVD process, carbon monoxide (CO) serves as an important precursor molecule and finds wide applications in thin film growth and material synthesis. This article will focus on the primary role of carbon monoxide in the growth process of metal thin films during CVD. Carbon monoxide (CO) possesses high volatility and decomposability, allowing it to rapidly enter the reaction system and undergo decomposition reactions under appropriate temperature conditions, generating free carbon and oxygen atoms. This characteristic makes carbon monoxide an important choice

Silane is a crucial chemical compound with wide-ranging applications in the semiconductor industry, particularly in lithography processes. Lithography is a key step in chip and integrated circuit manufacturing, where a photosensitive layer, known as photoresist, is used to define patterns and structures on the chip. Silane gas plays a vital role in improving the adhesion between the photoresist and the wafer surface, ensuring precise pattern transfer and enabling high-precision chip fabrication. Silane’s ability to enhance adhesion facilitates accurate pattern definition and replication during the lithography process, ultimately contributing to the production of high-quality semiconductor devices. During the lithography process, photoresist is coated onto the surface of a silicon wafer to

Silane refers to a group of chemical compounds consisting of silicon and hydrogen atoms (SiH4). It is a colorless and flammable gas, characterized by its distinctive pungent odor. Silane is highly reactive due to the presence of the silicon-hydrogen bonds, making it an essential building block for a wide range of chemical processes. Silane(silane gas or liquid silane) plays a crucial role in CMOS (Complementary Metal-Oxide-Semiconductor) technology, encompassing various key steps such as surface treatment, thin film deposition, and cleaning. In this article, we will explore the detailed application of silane in CMOS technology, focusing on its role in improving transistor performance and reliability. Let’s delve into the versatile applications of silane in