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1. WO2016023405 - METHOD FOR COATING METAL NANOPARTICLES ON SURFACE OF OXIDE CERAMIC POWDER

Publication Number WO/2016/023405
Publication Date 18.02.2016
International Application No. PCT/CN2015/082892
International Filing Date 30.06.2015
IPC
C04B 35/628 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
626Preparing or treating the powders individually or as batches
628Coating the powders
CPC
C04B 2235/405
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
40Metallic constituents or additives not added as binding phase
405Iron group metals
C04B 2235/407
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
40Metallic constituents or additives not added as binding phase
407Copper
C04B 2235/44
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
44Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
C04B 2235/652
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
652Reduction treatment
C04B 2235/658
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
658Atmosphere during thermal treatment
C04B 2235/6582
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
658Atmosphere during thermal treatment
6582Hydrogen containing atmosphere
Applicants
  • 河海大学 HOHAI UNIVERSITY [CN]/[CN]
Inventors
  • 张建峰 ZHANG, Jianfeng
  • 吴玉萍 WU, Yuping
  • 郭文敏 GUO, Wenmin
  • 洪晟 HONG, Sheng
  • 李改叶 LI, Gaiye
Agents
  • 南京苏高专利商标事务所(普通合伙) NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP)
Priority Data
201410392587.511.08.2014CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD FOR COATING METAL NANOPARTICLES ON SURFACE OF OXIDE CERAMIC POWDER
(FR) PROCÉDÉ DE REVÊTEMENT DE NANOPARTICULES DE MÉTAL SUR LA SURFACE DE POUDRE CÉRAMIQUE D'OXYDE
(ZH) 一种在氧化物陶瓷粉体表面包覆金属纳米粒子的方法
Abstract
(EN)
A method for uniformly coating carbon impurity-free metal nanoparticles on the surface of oxide ceramic powder, comprising: grinding and mixing a metal organic raw material and an oxide ceramic powder, then putting same into a rotary reaction chamber, then, under rotary and heating conditions, introducing an oxidizing gas to oxidize the metal organic raw material into a metal oxide, and finally introducing a reductive gas to reduce the metal oxide into metal-state nanoparticles. Uniform coating of the metal-state nanoparticles is realized, and the problems of the roughening and growing of the nanoparticles caused by a coating reaction with a long time at a high temperature are avoided. The method of the present invention is simple, and is short in preparation period. The prepared metal nanoparticles are dispersed uniformly, and have a wide application prospect in a plurality of fields as a catalytic material, a conductive ceramic, and the like.
(FR)
L'invention concerne un procédé de revêtement uniforme de nanoparticules de métal exemptes d'impuretés de carbone sur la surface de poudre céramique d'oxyde, comprenant les étapes consistant : à broyer et à mélanger un matériau brut organique de métal et une poudre céramique d'oxyde, puis à mettre ceci dans une chambre de réaction rotative, ensuite, sous des conditions de chauffage et rotation, à introduire un gaz oxydant pour oxyder le matériau brut organique de métal dans un oxyde métallique, et enfin à introduire un gaz réducteur pour réduire l'oxyde de métal en nanoparticules à l'état de métal. Le revêtement uniforme de nanoparticules à l'état de métal est réalisé, et les problèmes de la rugosité et de la croissance des nanoparticules provoqués par une réaction de revêtement avec une longue durée à haute température sont évités. Le procédé de la présente invention est simple, et la période de préparation est courte. Les nanoparticules de métal préparées sont dispersées uniformément, et présentent une large perspective d'application dans une pluralité de champs comme matériau catalytique, céramique conductrice et analogues.
(ZH)
一种在氧化物陶瓷粉体表面均匀包覆无碳杂质的金属纳米粒子的方法,包括将金属有机原料和氧化物陶瓷粉末研磨混合后放入旋转反应室中,然后在旋转加热的条件通入氧化性气体将金属有机原料氧化为金属氧化物,最后通入还原性气体,将金属氧化物还原为金属态纳米粒子,实现了金属态纳米粒子的均匀包覆,避免高温下长时间包覆反应所导致的纳米粒子粗化和长大的问题。本发明方法简单,制备周期短,制备出的金属纳米粒子分散均匀,作为催化材料、导电陶瓷等在多个领域具有广阔的应用前景。
Also published as
SG11201700921P
GB1700878.0
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