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1. WO2020113716 - POLYMER-ENZYME-METAL COMPOSITE NANOCATALYST AND CONTROLLABLE SYNTHESIS METHOD THEREFOR

Publication Number WO/2020/113716
Publication Date 11.06.2020
International Application No. PCT/CN2018/123877
International Filing Date 26.12.2018
IPC
B01J 31/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
31Catalysts comprising hydrides, coordination complexes or organic compounds
26containing in addition, inorganic metal compounds not provided for in groups B01J31/02-B01J31/24129
28of the platinum group metals, iron group metals or copper
CPC
B01J 31/28
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
31Catalysts comprising hydrides, coordination complexes or organic compounds
26containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
28of the platinum group metals, iron group metals or copper
B01J 35/006
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
002Catalysts characterised by their physical properties
0046Physical properties of the active metal ingredient
006metal crystallite size
B01J 35/023
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
023Catalysts characterised by dimensions, e.g. grain size
Applicants
  • 清华大学 TSINGHUA UNIVERSITY [CN]/[CN]
Inventors
  • 戈钧 GE, Jun
  • 黎晓阳 LI, Xiaoyang
Agents
  • 北京精金石知识产权代理有限公司 JJS INTELLECTUAL PROPERTY AGENCY LTD.
Priority Data
201811466522.503.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) POLYMER-ENZYME-METAL COMPOSITE NANOCATALYST AND CONTROLLABLE SYNTHESIS METHOD THEREFOR
(FR) NANOCATALYSEUR COMPOSITE MÉTAL-ENZYME-MÉTAL ET SON PROCÉDÉ DE SYNTHÈSE CONTRÔLABLE
(ZH) 一种高分子-酶-金属复合纳米催化剂及其可控合成方法
Abstract
(EN)
Disclosed are a polymer-enzyme-metal composite nanocatalyst and a controllable synthesis method therefor. The catalyst is prepared from a polymer compound, an enzyme and a metal salt, and is a metal nanoparticle composite catalyst limited to a polymer-enzyme conjugate. A preparation method therefor comprises the two steps of: constructing the polymer-enzyme conjugate, and performing,in the single polymer-enzyme conjugate, in-situ reduction of metal ions. The method can effectively control the size of metal particles in a synthesis process and prevent aggregation in order to achieve the controllable preparation of highly active, extremely small metal nanoparticles. In addition, the catalyst forms a nanometer-level dispersion in an aqueous solution and a conventional organic solvent, which is conducive to maintaining the enzyme catalysis activity and the activity of the metal catalyst during a reaction; and the catalyst has a temperature-responsive property in the conventional organic solvent, and can be repeatedly used at a low temperature after being separated through simple centrifugation.
(FR)
L'invention concerne un nanocatalyseur composite polymère-enzyme-métal et son procédé de synthèse contrôlable. Le catalyseur est préparé à partir d'un composé polymère, d'une enzyme et d'un sel métallique, et constitue un catalyseur composite à nanoparticules métalliques limité à un conjugué polymère-enzyme. Un procédé de préparation de celui-ci comprend les deux étapes consistant à : construire le conjugué polymère-enzyme, et effectuer, dans le conjugué polymère-enzyme unique, une réduction in-situ d'ions métalliques. Le procédé peut efficacement contrôler la taille de particules métalliques dans un processus de synthèse et empêcher l'agrégation afin d'obtenir la préparation contrôlable de nanoparticules métalliques extrêmement actives et extrêmement petites. De plus, le catalyseur forme une dispersion de niveau nanométrique dans une solution aqueuse et un solvant organique classique, qui est propice au maintien de l'activité de catalyse enzymatique et de l'activité du catalyseur métallique pendant une réaction; et le catalyseur a une propriété sensible à la température dans le solvant organique classique, et peut être utilisé de façon répétée à basse température après avoir été séparé par simple centrifugation.
(ZH)
一种高分子-酶-金属复合纳米催化剂及其可控合成方法。该催化剂由高分子化合物、酶、金属盐制备而成,是一种限域于高分子-酶结合物内的金属纳米颗粒复合催化剂,其制备步骤包括高分子-酶结合物的构建和金属离子在单个高分子-酶结合物内部原位还原两个部分,可有效控制合成过程中金属颗粒的尺寸,防止聚集,实现高活性的极小金属纳米颗粒的可控制备,同时该催化剂在水溶液及常规有机溶剂中形成纳米级分散,有利于保持其在反应过程中的酶催化活性和金属催化剂活性,同时,该催化剂在常见有机溶剂中具有温度响应特性,在低温下可通过简单的离心分离,多次重复使用。
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