A kind of synthetic method of selenium-doped zirconia catalyst

Abstract

The invention discloses a synthesis method of a selenium-doped zirconia catalyst. The steps are as follows: mix zirconium dioxide, ammonium fluoride additives, and ethanol solution of sodium selenium hydride in a ratio of 30-70 mmol:0.05-0.15 mmol:10 mL, stir at room temperature for 12-36 hours, then filter and wash with water, wherein , the concentration of sodium selenium hydride in the ethanol solution of sodium selenium hydride is 0.2mol / L. The catalyst can be used to catalyze the oxidative degradation of carotene, and the synthesis cost of the catalyst is low, metal-free, low in selenium content, and the catalytic effect is good. Good sex.

Description

technical field [0001] The invention relates to a synthesis method of a selenium-doped zirconia catalyst, belonging to the field of catalyst material preparation. Background technique [0002] Selenium-catalyzed chemistry is a research field that has just emerged in the past five years. Our research group has done a series of work in this field and developed a green synthetic method for the synthesis of various useful chemical intermediates using selenium-catalyzed methods. However, there are few reports on the application of selenium-containing catalyst materials in environmental treatment, mainly due to the difficulty in synthesizing homogeneous selenium catalysts and the high cost of catalysts. Therefore, the development of low-cost and high-efficiency heterogeneous catalysts and their application to environmental governance can expand the application range of selenium-catalyzed chemistry and have both academic and practical value. [0003] On the other hand, β-carotene...

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Problems solved by technology

At present, the existing methods have many limitations, such as high catalyst dosage, high catalyst cost, and the use of strong oxidants, etc.