Preparation method of anthraquinone hydrogenation catalyst

Abstract

The invention discloses a preparation method of an anthraquinone hydrogenation catalyst, which comprises the following steps: proportionally adding orthosilicate, a solvent and water into a kettle, and uniformly stirring the materials; then adding aluminum isopropoxide into the kettle; stirring the mixture at room temperature; adding an acidity regulator to regulate the pH value, and hydrolyzing the mixture; then adding a palladium nitrate solution / palladium chloride solution; adding an alkaline regulator to regulate the pH value; aging at a constant temperature of 55-70 DEG C; and performingcooling, discharging, molding, drying and roasting. Because of the existence of silicon oxide, the catalyst prepared by the method is weak in acidity, and anthraquinone hydrogenation is facilitated; selectivity and the activity are high; the catalyst has high hydrogenation efficiency in preparation of hydrogen peroxide by an anthraquinone method.

Description

technical field [0001] The invention belongs to a method for synthesizing organic compounds, and relates to a method for preparing an anthraquinone hydrogenation catalyst. Background technique [0002] Hydrogen peroxide, also known as hydrogen peroxide, is a strong oxidant. Its aqueous solution is suitable for medical wound disinfection, environmental disinfection and food disinfection. It is widely used in many fields such as chemical synthesis, food processing, medicine, and military industry. Because it produces water and oxygen after its decomposition, it has no pollution to the environment and is called the cleanest chemical; the existing methods for preparing hydrogen peroxide include anthraquinone method, barium peroxide and acid reaction, electrolytic sulfuric acid method, isopropyl Alcohol automatic oxidation method, the most commonly used method at present is the anthraquinone method. Compared with other methods, the anthraquinone method has less energy consumption...

AI Technical Summary

Problems solved by technology

For palladium-based catalysts, patent USP 4240933 uses silica as a carrier and adds additives, but palladium will fall off on the carrier. Patent USP 2657980 uses aluminum oxide as a carrier. Although palladium will not fall off, the catalyst activity is not high

Raney nickel is used as the active component of the catalyst, although the cost of the catalyst is low, but the activity is not high