2 results about "Contact reactions" patented technology

This invention relates to the field of gas-liquid reactions, specifically to a method for gas-liquid two-phase contact reactions. The method is carried out in a shell-and-tube microbubble reactor, which includes a shell and a tube located within and penetrating the shell. The tube wall has holes for the limited passage of gaseous feedstock. The two ends of the tube penetrating the shell are a gaseous feedstock inlet and an unreacted gaseous feedstock outlet, respectively. The shell has a liquid feedstock inlet and a product outlet. The method includes: introducing gaseous feedstock into the tube of the shell-and-tube microbubble reactor, and entering the shell side through the holes in the tube wall to react with the introduced liquid feedstock. This invention, by employing a specially structured shell-and-tube microbubble reactor for gas-liquid two-phase reactions, greatly enhances the gas-liquid reaction process.

The invention relates to a monosilane preparation method, which comprises: carrying out a contact reaction on silicon tetrafluoride and a solid alkali solution, carrying out filtration separation on the reaction material, and carrying out first rectification treatment on the liquid phase product to obtain a first intermediate product; carrying out hydrotreatment on the first intermediate product, and carrying out second rectification treatment on a reaction product to obtain a second intermediate product; and carrying out disproportionation reaction on the second intermediate product, and carrying out third rectification treatment on the reaction product to obtain monosilane. According to the preparation method provided by the invention, silicon tetrafluoride is used as a silicon source, so that the raw material cost is reduced; although rectification treatment is involved, the boiling point of a product is relatively higher, the purification difficulty is small, the energy consumption is lower, rectification of halogen-containing substances is not involved, a rectification device does not need to consider the corrosion problem, and the device investment is reduced; a byproduct is only villiaumite of alkali metal, and the application field is wide; moreover, in the preparation method, all the raw materials can be recycled, and the overall cost advantage is more obvious.