The main ingredients are SiO2, why is gas-phase silicon dioxide the most popular?

We know that silicon dioxide (SiO2) is abundant in nature. Sand, crystal, quartz sand, silicon powder, diatom soil, etc., the main components are SiO2; Such as sand grains, silicon powder and diatom soil, these are natural products, some of them are not processed directly, some are processed to enter the market, but the application of the product is very limited; In the market, gas phase white charcoal black products are also the most expensive (except for jewelry and collectible crystals), involved in the most extensive applications. Why is the price of gas-phase silica so high, but still become the darling of the market? This is mainly related to the unique synthesis process of gas-phase silica and the excellent performance of the product.exactly how is that gas-phase silicon dioxide synthesized? And why is there so much unique performance?

above is a diagram of the gas phase white carbon black synthesis reaction, in the whole gas phase method white carbon black production process, has the following characteristics:(1) In terms of raw materials, synthetic gas phase white carbon black raw materials are very simple, one is halosilane (SiCl4 and CH3SiCl3) and flammable gases (hydrogen and oxygen (air), can effectively prevent other substances into the product.(2) in terms of process, halosilane is first vaporized and then entered into the reactor, hydrolytic reaction temperature is also about 2000 degrees C, and then gathered, separated, deacicate and other processes are completed at high temperatures, the entire process is completed in a continuous, sealed system, to ensure that the product is not affected and polluted by the outside world.(3) The whole production plant in all key links are high temperature, acid and alkali corrosion-resistant materials, can avoid other sources of pollution in the production process into the product.
Because of the characteristics of raw materials and production processes produced by gas phase white carbon black, the gas phase method white carbon black products have small particle size (native particle size 7-40nm), larger than the surface area (100-400m2/g), high surf activity (surface contains highly active Si-OH group); In appearance, the gas-phase white charcoal black is represented by a fluffy white ultra-fine powder in the form of "smoke", so it has the English name fumed silica.
In addition, the gas phase method white carbon black is aloinable, the product purity is high (SiO2% ≥99.8%), and, due to the presence of surfactive silicon hydroxyl, as well as the gas phase method white carbon black accumulation density is low, good liquidity characteristics, for the gas phase method White carbon black to achieve dry surface change is possible, can achieve surface change without destroying the gas phase method white carbon black special structure, through the selection of different structures and functions of the surface modifier to change it, you can obtain different functional products, so as to achieve the gas phase method white carbon black functionalization. It is precisely because of the gas phase method white carbon black this series of unique structure and performance, so that it reflects in the practical application of excellent reinforcement, thickening, tentacles, anti-sinking, anti-flow hanging, adsorption, insulation and other functions, in rubber, plastic, glue, Adhesives, industrial catalysis, food, medicine, CMP, insulation materials and other dozens of fields have a wide range of applications, so that the gas phase method white carbon black really become silicon dioxide in the "white rich beauty" and the market 'favorite'.

The current domestic enterprises through the continuous absorption and digestion of technology, such as Yichang Huifu Silicon Materials Co., Ltd. and other representative domestic enterprises have been able to produce high-quality hydro-hydro-phase silica with independent intellectual property rights and hydrophobic gas-phase silica.​