Common carriers for supported palladium catalysts include alumina, cordierite (2MgO·Al2O3·SiO2), silica gel, activated carbon and zeolite. When selecting a process to recover palladium, the distribution of palladium in the carrier and the characteristics of the carrier must be considered. For…
The automobile exhaust catalyst industry accounts for 48%, 82% and 93% of the global demand for platinum, palladium and rhodium. The content of platinum group metals in automobile exhaust catalyst devices is high, and the carrier is mainly alumina or…
Gold Refining MethodsAqua Regia ProcessPurpose: Refines gold from scrap, electronics, or jewelry. Steps:Dissolve gold in a mixture of hydrochloric acid (HCl) and nitric acid (HNO₃) (3:1 ratio) to form gold chloride.Filter out insoluble impurities.Precipitate pure gold using a reducing agent…
Important Note:Producing nitric acid (HNO₃) at home is extremely dangerous, illegal in many jurisdictions without proper permits, and not recommended. Nitric acid is a highly corrosive, toxic substance that can cause severe burns, release deadly fumes (e.g., nitrogen dioxide), and…
Methods for separation and refining of palladium: The main function of separation and refining is to remove impurities from the palladium leaching solution, enrich palladium (II) or palladium (IV), and then reduce it to sponge palladium after multiple refining.
As a precious metal with good corrosion resistance, high temperature resistance and stable electrical properties, palladium has been widely used in petrochemical, pharmaceutical, electronic, chemical catalyst and other fields. For example, palladium carbon catalysts are widely used in petrochemical and…
Summary of advanced methods and technologies for extracting gold from electronic wasteExtracting gold from electronic waste (such as waste circuit boards, mobile phones, and computers) requires a combination of multidisciplinary technologies such as chemistry, biology, and physics. The following are…
Precious metal refining technology has many development trends in the future. With the continuous advancement of science and technology and the increasing requirements for environmental protection, precious metal refining technology is developing in a more efficient, green and intelligent direction.
Comparison of the cost-effectiveness of precious metal refining processes is a complex issue that requires comprehensive consideration of multiple factors. Different refining processes have their own advantages and disadvantages in terms of cost and benefit. The following will analyze several…
What are the impacts of different precious metal refining processes on the environment?There are many types of precious metal refining processes, and different processes have different degrees of impact on the environment. The following will elaborate on the impact of…
