Method for preparing polymolecularity metal catalyst in load type from plasma

Abstract

A process for preparing the high-dispersing carried catalyst by plasma includes carrying active components by dipping method or ion exchange method, drying, putting the catalyst in discharging tube, vacuumizing to 10-20 Pa, filling N2, O2, H2, or inertial gas to 10-1000 Pa, applying 200-5000 V across two electrodes for plasma treating for 10-500 min, and calcining at 300-600 deg.C for 3-7 hrs.

Description

technical field [0001] The invention belongs to the technical field of catalysis, in particular to a method for preparing a high-dispersion supported metal catalyst by plasma. Background technique [0002] Supported catalyst is a commonly used catalyst in the chemical industry. It can evenly disperse expensive metal active components on the surface of the catalyst, thereby saving the amount of metal used and improving the activity of the catalyst. The commonly used methods for preparing supported catalysts include impregnation method, ion exchange method, sol-gel method and co-precipitation method, etc., and these methods have been successfully applied in industrial production. However, with the emphasis on environmental protection and the demand for energy, more and more attention has been paid to catalysts with high activity and low price, so more and more new catalyst preparation methods have emerged. As mentioned in 1998, 14 (9): 769 "Act...

AI Technical Summary

Problems solved by technology

However, the choice of metal precursors is a big problem. It requires easy gasification, good thermal stability during transportation, easy preparation, high purity, and easy and thorough thermal decomposition. The most commonly used metal precursors are metal carbonyl compounds. (M(CO)x), it is still difficult to apply to the actual industrial production process