The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2019
Filed:
Dec. 20, 2017
Hangzhou Normal University, Zhejiang, CN;
Zhejiang Benli Technology Co., Ltd., Taizhou, Zhejiang, CN;
Pengfei Zhang, Zhejiang, CN;
Chao Shen, Zhejiang, CN;
Xiaoling Li, Zhejiang, CN;
Jun Xu, Zhejiang, CN;
Haining Gu, Zhejiang, CN;
Hangzhou Normal University, Zhejiang, CN;
Zhejiang Benli Technology Co., Ltd., Taizhou, Zhejiang, CN;
Abstract
The present invention discloses a core-shell structure supported tungsten composite catalyst and a preparation method and use thereof. Most of the existing synthesis methods of the main ring of quinolone drugs have the defects of many synthesis steps, cumbersome operation, large amount of three wastes, higher costs and the like. The present invention prepares a magnetic separable core-shell supported tungsten composite catalyst, WO/SiO/FeO, by preparing FeOcolloid and SiO/FeOcomposite nano-particles. This magnetic separable core-shell supported tungsten composite catalyst, WO/SiO/FeO, is used to catalyze and synthesize quinolone compounds. The present invention provides an efficient preparation method of quinolone compounds using a catalyst which can be recovered by magnetic separation and recycled. The catalyst prepared by the present invention can be reused in the preparation of quinolone compounds and still retains the original activity without deactivation, which not only greatly improves the production efficiency, but also reduces the environmental pollution.