Aerogel catalyst and preparation method thereof

Abstract

The invention provides an aerogel catalyst which is aerogel particle containing TIO2 and ZrO2, the particle diameter of the aerogel particle is 10-200mn, and the density is 30-600mg / cm<3>. The invention also provides a preparation method of the aerogel particle. Biodegradable copolyester prepared from the aerogel catalyst provided by the invention has high degree of polymerization and more intensive molecular weight distribution, and the detect that the color of the biodegradable copolyester is yellow color is alleviated.

Description

technical field

[0001] The invention relates to an airgel catalyst and a preparation method of the airgel catalyst. Background technique

[0002] At present, thermoplastic aromatic polyesters, which are widely used in industry and daily life, have excellent thermal stability and mechanical properties, are easy to process and low in price. Polyethylene terephthalate (PET), and polybutylene terephthalate (PBT), for example, have been widely used in the manufacture of fibers, films and containers. However, these aromatic polyesters are difficult to degrade after being used and discarded, and no obvious direct degradation of aromatic polyesters such as PET and PBT by microorganisms has been observed so far. In order to combine the excellent properties of aromatic polyesters, since the 1980s, those skilled in the art have devoted themselves to the research of synthesizing aliphatic-aromatic copolyesters, that is, introducing aromatic segments into aliphatic polyesters, which not...