Chongqing Zen Pharmaceutical Co., Ltd.

Chongqing Research Academy of Eco-environmental Sciences

Dan Zhang

Wei Hu

Yong Qin

Xiaolin Wang

Qiu Chen

Zongyin Qiu

Lirong Xu

Rui Yuan

Yaoqiang Chen

Yongpeng Xia

Min Zhang

Bao Ding

A preparation method of a monometallic or bimetallic nanoparticle-supported catalyst is disclosed. The synthesis of metal nanoparticles with different shapes, sizes, and atomic structures is affected by nucleation and growth rates. By changing a ratio of strong and weak reducing agents, a suitable double reducing agent is provided for metal nanoparticles with different reduction potentials, where the strong reducing agent is used for rapid nucleation and the weak reducing agent is used for the growth of metal nanoparticles. Accordingly, modulation and control of the nucleation and growth rates can be realized during the synthesis of nanoparticles. In addition, through multiple actions of a combination of reducing agents with different reduction intensities, monometallic/bimetallic nanoparticles of different sizes, shapes, and atomic structures are controllably prepared, which are then supported with a carrier to obtain the monometallic or bimetallic nanoparticle-supported catalyst.

Preparation method of monometallic or bimetallic nanoparticle-supported catalyst

This invention discloses a novel compound with the structure of formula I, or pharmaceutically acceptable salts or solvates thereof. In addition, the invention further discloses a method for preparing the compound, a pharmaceutical composition containing the compound, and use thereof in the preparation of a hypoglycemic medicament. 

Ecdysterone synthesis derivative, preparation method and use thereof

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Chongqing, China

Dan Zhang