Method for catalyzing hydrodehalogenation of heterocyclic halogen-containing organic matter by using supported metal oxide

Abstract

The invention relates to a hydrodehalogenation catalyst, and aims to provide a method for catalyzing hydrodehalogenation of a heterocyclic halogen-containing organic matter by using a supported metaloxide. The method comprises the following steps: uniformly mixing a solvent, a heterocyclic halogen-containing organic matter, a neutralizer and a catalyst material; introducing hydrogen into a reaction container until the pressure is 0.1 to 3.0 MPa; reacting at a controlled temperature of 25-180 DEG C for 0.1-24 h; and carrying out catalytic dehalogenation in the reaction process to finally obtain a dehalogenated heterocyclic compound. The method can effectively regulate the selectivity of the product in the dehalogenation process of the heterocyclic halogen-containing organic matter, and effectively regulate the adsorption of pyridine, thiophene and other organic molecules on the surface of the catalytic material by regulating the chemical coordination environment of the metal components, thereby efficiently preparing important compounds in the chemical and agricultural processes. In the dehalogenation process, the catalytic material is stable and can be recycled, no toxic or harmfulbyproduct is generated in the whole reaction process, and the method is green and environmentally friendly and has a high industrial application prospect.

Description

technical field [0001] The invention relates to a catalyst for catalyzing the hydrodehalogenation of a heterocyclic halogen-containing organic compound, in particular to a method for catalyzing the hydrodehalogenation of a heterocyclic halogen-containing organic compound by using a supported metal oxide material. Background technique [0002] In recent years, with the rapid development of chemistry and chemical industry, organic heteroatom compounds have important and extensive applications in the fields of pesticides, medicine, organic synthesis, and chemical industry. At the same time, the large amount of heteroatomic organic compounds containing halogen atoms in the industrial production process has also attracted the attention of governments and researchers, mainly because most chlorine-containing organic compounds show environmental persistence and biological The characteristics of accumulation and high toxicity are not easy to be decomposed or biodegraded, so that thes...

AI Technical Summary

Problems solved by technology

Since the 1980s, research on hydrodehalogenation catalysts has become more and more extensive, but there are few catalytic materials that really have industrial application prospects. Poor performance, insufficient stability of catalytic material structure, etc.

For example, when some halogen-containing organic compounds containing two or more groups that can be hydrogenated are subjected to hydrodehalogenation, it is often easy to hydrogenate functional groups other than halogens, resulting in problems such as low product selectivity; in addition In addition, especially for the hydrodehalogenation reaction system of nitrogen-containing and sulfur-containing compounds, these types of substrates are easy to cause the loss and sintering of the active components of the catalytic material, making it difficult to regenerate and recover the catalyst after use, and it is difficult to carry out industrial scale-up production