公开(公告)号：US09725620B2

公开(公告)日：2017-08-08

申请号：US14412366

申请日：2013-11-07

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Xiaowei Huang ,  Ying Yu ,  Zhiqi Long ,  Liangshi Wang ,  Dali Cui ,  Yongke Hou ,  Meisheng Cui

IPC: B24D3/00 ,  B24D3/02 ,  B24D11/00 ,  B24D18/00 ,  C09K3/14 ,  C09G1/02

CPC classification number: C09G1/02

Abstract: The present invention provides a cerium oxide based composite polishing powder and a preparation method thereof. The polishing powder contains the element magnesium in an amount of 0.005 wt %-5 wt % to magnesium oxide meter. The preparation method includes: (1) uniformly mixing a salt solution containing cerium serving as the main component of the polishing powder; (2) uniformly mixing a precipitating agent of an aqueous magnesium bicarbonate solution with the mixed solution prepared in step (1) to obtain a slurry; (3) aging the slurry prepared in step (2) for 0-48 h while the temperature of the slurry is kept at 30-90 degrees centigrade, and filtering the aged slurry to obtain the precursor powder of the polishing powder; (4) calcinating the precursor powder at 600-1000 degrees centigrade, then dispersing and separating the calcinated precursor powder to obtain the polishing powder. The present invention improves the polishing performance and the suspension performance of polishing powder.

公开(公告)号：US20180021759A1

公开(公告)日：2018-01-25

申请号：US15546152

申请日：2016-01-26

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Xiaowei Huang ,  Qi Wang ,  Mei Yue ,  Qiang Zhong ,  Lei Wang ,  Yongke Hou ,  Meisheng Cui

IPC: B01J23/83 ,  B01D53/86 ,  B01J23/10 ,  B01J23/34 ,  B01J35/08 ,  B01J37/02 ,  B01J35/00 ,  B01J35/10 ,  B01J37/04 ,  B01J37/03 ,  B01J37/00 ,  B01J37/10 ,  B01D53/94 ,  B01J35/06

CPC classification number: B01J23/83 ,  B01D53/86 ,  B01D53/94 ,  B01D2255/407 ,  B01J23/10 ,  B01J23/34 ,  B01J23/63 ,  B01J35/0013 ,  B01J35/026 ,  B01J35/06 ,  B01J35/08 ,  B01J35/1014 ,  B01J37/009 ,  B01J37/0236 ,  B01J37/03 ,  B01J37/038 ,  B01J37/04 ,  B01J37/10 ,  B01J2523/00 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/3725 ,  B01J2523/3706 ,  B01J2523/3718 ,  B01J2523/36 ,  B01J2523/72 ,  B01J2523/24 ,  B01J2523/17 ,  B01J2523/3756 ,  B01J2523/23 ,  B01J2523/3743 ,  B01J2523/847

Abstract: Provided are a cerium-zirconium composite oxide, a preparation method therefor and application of a catalyst. The cerium-zirconium composite oxide has a composite phase structure, and comprises a cerium oxide phase and a cerium-zirconium solid solution phase, or consists of two or more cerium-zirconium solid solution phases with different crystal structures and different chemical compositions, wherein the chemical formula of the cerium-zirconium solid solution phase is CexZr1-x-yMyO2, where M is at least one selected from the group consisting of a rare earth element other than cerium, a transition metal element and an alkaline earth metal element, x is 15-85 mol %, and y is 0-20 mol %.

公开(公告)号：US12109551B2

公开(公告)日：2024-10-08

申请号：US17422691

申请日：2020-09-04

Applicant: GRIREM ADVANCED MATERIALS CO., LTD. ,  Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd. ,  GRIREM HI-TECH CO., LTD.

Inventor： Xiaowei Huang ,  Yongqi Zhang ,  Hongwei Li ,  Zhizhe Zhai ,  Qiang Zhong ,  He Zhang ,  Meisheng Cui ,  Yongke Hou ,  Hao Wang ,  Zongyu Feng

IPC: B01J21/06 ,  B01J6/00 ,  B01J23/02 ,  B01J23/10 ,  B01J35/00 ,  B01J35/30 ,  B01J35/39 ,  B01J37/04 ,  F01N3/10

CPC classification number: B01J23/10 ,  B01J6/001 ,  B01J21/066 ,  B01J23/02 ,  B01J35/19 ,  B01J35/397 ,  B01J35/398 ,  B01J37/04 ,  F01N3/10 ,  F01N2570/14

Abstract: The present invention discloses a rare-earth-manganese/cerium-zirconium-based composite compound, a method for preparing the same, and a use thereof. The composite compound is of a core-shell structure with a general formula expressed as: A REcBaOb-(1-A)CexZr(1-x-y)MyO2-z, wherein 0.1≤A≤0.3, preferably 0.1≤A≤0.2; a shell layer has a main component of rare-earth manganese oxide with a general formula of REcMnaOb, wherein RE is a rare-earth element or a combination of more than one rare-earth elements, and B is Mn or a combination of Mn and a transition metal element, 1≤a≤8, 2≤b≤18, and 0.25≤c≤4; and a core has a main component of cerium-zirconium composite oxide with a general formula of CexZr(1-x-y)MyO2-z, wherein M is one or more non-cerium rare-earth elements, 0.1≤x≤0.9, 0≤y≤0.3, and 0.01≤z≤0.3. The composite compound enhances an oxygen storage capacity of a cerium-zirconium material through an interface effect, thereby increasing a conversion rate of a nitrogen oxide.

公开(公告)号：US10173200B2

公开(公告)日：2019-01-08

申请号：US15546152

申请日：2016-01-26

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Xiaowei Huang ,  Qi Wang ,  Mei Yue ,  Qiang Zhong ,  Lei Wang ,  Yongke Hou ,  Meisheng Cui

IPC: B01J21/06 ,  B01J23/10 ,  B01J23/34 ,  B01J23/83 ,  B01J35/00 ,  B01J35/06 ,  B01J35/08 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/10 ,  B01D53/94 ,  B01D53/86 ,  B01J23/63 ,  B01J35/02

Abstract: Provided are a cerium-zirconium composite oxide, a preparation method therefor and application of a catalyst. The cerium-zirconium composite oxide has a composite phase structure, and comprises a cerium oxide phase and a cerium-zirconium solid solution phase, or consists of two or more cerium-zirconium solid solution phases with different crystal structures and different chemical compositions, wherein the chemical formula of the cerium-zirconium solid solution phase is CexZr1-x-yMyO2, where M is at least one selected from the group consisting of a rare earth element other than cerium, a transition metal element and an alkaline earth metal element, x is 15-85 mol %, and y is 0-20 mol %.

公开(公告)号：US20150184027A1

公开(公告)日：2015-07-02

申请号：US14412366

申请日：2013-11-07

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Xiaowei Huang ,  Ying Yu ,  Zhiqi Long ,  Liangshi Wang ,  Dali Cui ,  Yongke Hou ,  Meisheng Cui

IPC: C09G1/02

CPC classification number: C09G1/02

Abstract: The present invention provides a cerium oxide based composite polishing powder and a preparation method thereof. The polishing powder contains the element magnesium in an amount of 0.005 wt %-5 wt % to magnesium oxide meter. The preparation method includes: (1) uniformly mixing a salt solution containing cerium serving as the main component of the polishing powder; (2) uniformly mixing a precipitating agent of an aqueous magnesium bicarbonate solution with the mixed solution prepared in step (1) to obtain a slurry; (3) aging the slurry prepared in step (2) for 0-48 h while the temperature of the slurry is kept at 30-90 degrees centigrade, and filtering the aged slurry to obtain the precursor powder of the polishing powder; (4) calcinating the precursor powder at 600-1000 degrees centigrade, then dispersing and separating the calcinated precursor powder to obtain the polishing powder. The present invention improves the polishing performance and the suspension performance of polishing powder.

Abstract translation: 本发明提供了一种氧化铈基复合抛光粉及其制备方法。 抛光粉末含有与氧化镁计0.005重量％-5重量％的量的元素镁。 制备方法包括：（1）均匀混合含有作为抛光粉主要成分的铈的盐溶液; （2）将碳酸氢钠水溶液的沉淀剂与步骤（1）中制备的混合溶液均匀混合，得到浆料; （3）将浆料的温度保持在30〜90℃，将步骤（2）中制备的浆料老化0-48小时，过滤老化浆料得到抛光粉末的前体粉末; （4）在600-1000℃煅烧前体粉末，然后分散和分离煅烧的前体粉末以获得抛光粉末。 本发明提高了抛光粉的抛光性能和悬浮性能。