There are various methods for preparing white carbon black, each with its own characteristics.

The gas-phase method is an important method for preparing white carbon black. Taking gas-phase white carbon black as an example, it is prepared by high-temperature hydrolysis of silane halides in a hydrogen oxygen flame. The white carbon black product prepared by this method has high purity, up to 99%, small particle size, up to 10-20nm, and is all nano silica. However, the preparation process of gas-phase method is complex, requires high equipment, and is relatively expensive.
Precipitation method is also a commonly used preparation method, and precipitation method for white carbon black can be divided into traditional precipitation method and special precipitation method. The traditional precipitation method uses sulfuric acid, hydrochloric acid, CO2, and water glass as the basic raw materials, and generates silica precipitation through chemical reactions. Special precipitation methods include high gravity technology, sol gel method, chemical crystal method, secondary crystallization method or reverse micelle micro lotion method. Compared to gas-phase methods, precipitation methods have lower costs, but their products differ in purity, particle size, and other aspects.
Currently, the development trend of white carbon black mainly focuses on green preparation and high-end modification. In terms of green preparation, PetroChina uses rice husk and CO2 as raw materials to prepare white carbon black. This method utilizes renewable resources, reduces dependence on traditional raw materials, lowers production costs, and is also more environmentally friendly. In terms of high-end modification, surface modification and other treatments are carried out on white carbon black to better adapt to the needs of emerging fields such as new energy and electronics, expanding the application scope of white carbon black.
These articles introduce white carbon black from different perspectives, covering its definition, properties, applications, and preparation. If you are interested in a specific field, such as the application of white carbon black in the pharmaceutical industry, or want to learn more about a certain preparation method, you can tell me and I can further create related content for you.

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