Decarbon Technology (shenzhen) Co., Ltd.

Heijin Chen

Zuotai Zhang

Feng Yan

Chunyan Li

Fan Qu

Xuehua Shen

Jiyun Xu

The present disclosure a solid amine adsorbent and its preparation method and application. The solid amine adsorbent consists of modified organic amines and a porous nano support, with the proportion of secondary amines in the modified organic amines being 70% or higher. The preparation method of the modified organic amines includes the following steps: S1: Mixing the organic amine and the organic amine modifying agent into an acetonitrile solvent and stirring to achieve uniform mixing; S2: Adding a crosslinking agent to the solution and stirring; S3: Gradually adding acetic acid to the solution during stirring to adjust the pH to neutral, then continuing to stir; S4: Using a rotary evaporator to evaporate the solvent at 90-110° C. until completely removed, resulting in the modified organic amine. The modified solid amine adsorbent produced by the present disclosure maintains high stability during cyclic adsorption and desorption processes while also ensuring excellent capacity.

Solid amine adsorbent and its preparation method and application

A porous calcium silicate hydrate, a preparation method thereof and an adsorbent are provided. The preparation method of the porous calcium silicate hydrate includes: leaching fly ash with an alkali agent to obtain a silicate leaching solution; adding the silicate leaching solution dropwise to a calcium hydroxide suspension at a constant rate, and conducting stirring and a heating reaction to obtain a calcium silicate hydrate gel; and mixing the calcium silicate hydrate gel with an organic alcohol solvent, conducting azeotropic distillation, and then conducting separation, drying and calcination to obtain the porous calcium silicate hydrate.

Porous calcium silicate hydrate, preparation method thereof and adsorbent

A calcium silicate based nickel catalyst and a preparation method and application thereof are provided. The method includes: leaching a silicon based solid waste with an alkali agent to obtain a silicate leaching solution; adding the silicate leaching solution and a nitrate solution corresponding to a lanthanum metal dropwise to a calcium hydroxide suspension for a first precipitation reaction, and subjecting a precipitate produced by the reaction to filtration, drying and calcination to obtain a modified calcium silicate support; and dispersing the modified calcium silicate support in an anhydrous alcohol solvent to obtain a mixed suspension, adding an alcohol solution of a nickel salt dropwise to the mixed suspension for a second precipitation reaction, conducting heating and stirring until alcohols in the anhydrous alcohol solvent and the alcohol solution of a nickel salt are volatilized, and conducting drying and calcination to obtain the modified calcium silicate based nickel catalyst.

Growing community of inventors

Guangdong, China

Heijin Chen