JP2015502905A - 多孔質ムライト含有複合物を作製するための方法 - Google Patents
多孔質ムライト含有複合物を作製するための方法 Download PDFInfo
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- JP2015502905A JP2015502905A JP2014542341A JP2014542341A JP2015502905A JP 2015502905 A JP2015502905 A JP 2015502905A JP 2014542341 A JP2014542341 A JP 2014542341A JP 2014542341 A JP2014542341 A JP 2014542341A JP 2015502905 A JP2015502905 A JP 2015502905A
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- JP
- Japan
- Prior art keywords
- ceramic body
- starting
- pores
- acicular mullite
- aluminate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002131 composite material Substances 0.000 title description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 71
- 239000011148 porous material Substances 0.000 claims abstract description 60
- 239000013078 crystal Substances 0.000 claims abstract description 29
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 19
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011737 fluorine Substances 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- 150000004645 aluminates Chemical class 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 125000001153 fluoro group Chemical group F* 0.000 claims description 11
- 229910052878 cordierite Inorganic materials 0.000 claims description 7
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910000505 Al2TiO5 Inorganic materials 0.000 claims description 4
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims description 4
- 229910001491 alkali aluminosilicate Inorganic materials 0.000 claims description 4
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- YFMFNYKEUDLDTL-UHFFFAOYSA-N 1,1,1,2,3,3,3-heptafluoropropane Chemical compound FC(F)(F)C(F)C(F)(F)F YFMFNYKEUDLDTL-UHFFFAOYSA-N 0.000 claims description 2
- WZLFPVPRZGTCKP-UHFFFAOYSA-N 1,1,1,3,3-pentafluorobutane Chemical compound CC(F)(F)CC(F)(F)F WZLFPVPRZGTCKP-UHFFFAOYSA-N 0.000 claims description 2
- CXIGIYYQHHRBJC-UHFFFAOYSA-N 1,1,1,4,4,4-hexafluorobutane Chemical compound FC(F)(F)CCC(F)(F)F CXIGIYYQHHRBJC-UHFFFAOYSA-N 0.000 claims description 2
- UJPMYEOUBPIPHQ-UHFFFAOYSA-N 1,1,1-trifluoroethane Chemical compound CC(F)(F)F UJPMYEOUBPIPHQ-UHFFFAOYSA-N 0.000 claims description 2
- ZXVZGGVDYOBILI-UHFFFAOYSA-N 1,1,2,2,3,3-hexafluoropropane Chemical compound FC(F)C(F)(F)C(F)F ZXVZGGVDYOBILI-UHFFFAOYSA-N 0.000 claims description 2
- ISFDGOHTRCNJJG-UHFFFAOYSA-N 1,1,2,2,3-pentafluoropentane Chemical compound CCC(F)C(F)(F)C(F)F ISFDGOHTRCNJJG-UHFFFAOYSA-N 0.000 claims description 2
- WGZYQOSEVSXDNI-UHFFFAOYSA-N 1,1,2-trifluoroethane Chemical compound FCC(F)F WGZYQOSEVSXDNI-UHFFFAOYSA-N 0.000 claims description 2
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 claims description 2
- 229910016569 AlF 3 Inorganic materials 0.000 claims description 2
- 229910017855 NH 4 F Inorganic materials 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims description 2
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 claims description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 239000003054 catalyst Substances 0.000 abstract description 7
- 239000006260 foam Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 18
- 241000264877 Hippospongia communis Species 0.000 description 10
- 238000005755 formation reaction Methods 0.000 description 10
- 229910010293 ceramic material Inorganic materials 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910000323 aluminium silicate Inorganic materials 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000001354 calcination Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000008204 material by function Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- AQBOUNVXZQRXNP-UHFFFAOYSA-L azane;dichloropalladium Chemical compound N.N.N.N.Cl[Pd]Cl AQBOUNVXZQRXNP-UHFFFAOYSA-L 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- UXFOSWFWQAUFFZ-UHFFFAOYSA-L barium(2+);diformate Chemical compound [Ba+2].[O-]C=O.[O-]C=O UXFOSWFWQAUFFZ-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 229920000876 geopolymer Polymers 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- VXNYVYJABGOSBX-UHFFFAOYSA-N rhodium(3+);trinitrate Chemical compound [Rh+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VXNYVYJABGOSBX-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
Classifications
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0093—Other features
- C04B38/0096—Pores with coated inner walls
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/628—Coating the powders or the macroscopic reinforcing agents
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/628—Coating the powders or the macroscopic reinforcing agents
- C04B35/62844—Coating fibres
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/628—Coating the powders or the macroscopic reinforcing agents
- C04B35/62894—Coating the powders or the macroscopic reinforcing agents with more than one coating layer
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/628—Coating the powders or the macroscopic reinforcing agents
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
- C04B38/0054—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity the pores being microsized or nanosized
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5037—Clay, Kaolin
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24149—Honeycomb-like
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Abstract
Description
(a)気体フッ素含有化合物、または、出発の多孔性アルミン酸塩含有セラミック体がシリコンを含有しないならば、シリコン原子およびフッ素原子の気体ソースと、出発の多孔性アルミン酸塩含有セラミック体の孔を700〜1200℃の温度で接触させて、多孔性アルミン酸塩含有セラミック体の孔の表面の少なくとも一部上でフルオロトパーズを形成する工程と、次いで
(b)1000〜1500℃の温度までセラミック体を加熱して、フルオロトパーズをセラミック体の孔の表面へ付加された針状ムライトウィスカーへ転換する工程と
を含むプロセスである。
滑らかな高密度壁および約90体積%の多孔率を有する商業的に入手可能なα−アルミナフォームは、SiF4雰囲気(SiF4分圧400torr)下で約800℃の温度まで8時間加熱される。次いで温度を1150℃まで2時間増加させて、フォームの外部および内部の孔表面上に針状ムライト結晶を形成させる。出発のフォームの表面積は0.06m2/gである。記載された処理後に、フォームの表面積は0.2m2/gまたは初期値の約350%に増加する。
アルカリアルミノケイ酸塩フォームは、SiO2、Al2O3およびNa2Oの混合物を1100℃でか焼することによって作製される。このフォームは図2A中で示されるように滑らかな高密度壁を有する。このフォームを実施例1中で記載される一般的様式で処理して、孔表面上に針状ムライト結晶を生産する。図2Bは処理されたフォームの顕微鏡写真図である。図2B中で理解することができるように、孔表面は非常に粗くなり、それらの表面積は有意に増加される。
ウレタンフォームを前駆体スラリー中で浸漬し、乾燥し、1000℃でか焼して、アルミナフォームを形成する。ウレタンフォームは、か焼工程の間に燃焼される。アルミナフォームを実施例1中で記載されるものと同じ一般的様式で処理する。内部孔表面は長さおよそ50ミクロンの針状ムライト結晶によりカバーされるようになる。
多孔性セル壁を有するチタン酸アルミニウムハニカムを実施例1中で記載されるものと同じ一般的様式で処理する。針状ムライト結晶はセル壁の表面上に形成される。SiF4へのより長期の露光に際して、針状ムライト結晶は壁中で孔内でも形成される。図3は処理されたチタン酸時間アルミニウムハニカムの顕微鏡写真図であり、壁表面上の針状ムライト結晶の存在を示す。
多孔性セル壁を有するコーディエライトハニカムを1,1,1,2−テトラフルオロエタン気体と1000℃で5時間、および次いで1100℃で2時間反応させて、針状ムライト結晶を生産する。この処理の結果として、コーディエライトのおよそ10%は針状ムライトに転換され、それはセル壁上およびセル壁の孔中に結晶を形成する。針状ムライト結晶は長さ20〜30ミクロンである。図4は、処理されたハニカムの表面の一部の顕微鏡写真図で、針状ムライト結晶の存在を示す。
Claims (15)
- 出発の多孔性アルミニウム含有セラミック体の表面積を増加させるプロセスであって、
(a)気体フッ素含有化合物、または、出発の多孔性アルミン酸塩含有セラミック体がシリコンを含有しないならば、シリコン原子およびフッ素原子の気体ソースと、出発の多孔性アルミン酸塩含有セラミック体の孔を700〜1200℃の温度で接触させて、多孔性アルミン酸塩含有セラミック体の孔の表面の少なくとも一部上でフルオロトパーズを形成する工程と、次いで
(b)1000〜1500℃の温度までセラミック体を加熱して、フルオロトパーズをセラミック体の孔の表面へ付加された針状ムライトウィスカーへ転換する工程と
を含むプロセス。 - 前記アルミン酸塩が、アルミナ、チタン酸アルミニウム、非針状ムライト、コーディエライトおよびアルカリアルミノケイ酸塩から選択される、請求項1に記載のプロセス。
- 前記出発のセラミック体が、孔の存在以外は、理論密度の少なくとも90%まで好ましくは緻密化される、請求項1または2のいずれか一項に記載のプロセス。
- 前記出発のセラミック体が約30%〜85%の多孔率を有する、請求項1〜3のいずれか一項に記載のプロセス。
- 前記孔のサイズが、水銀ポロシメータによって測定されたとき、5〜50ミクロンである、請求項1〜4のいずれか一項に記載のプロセス。
- 前記フッ素含有化合物が、1つまたは複数のSiF4、AlF3、HF、Na2SiF6、NaF、NH4F、メチレンジフルオリド、トリフルオロメタン、テトラフルオロメタン、1,1,1,2,2−ペンタフルオロエタン、1,1,1,2−テトラフルオロエタン、1,1,2−トリフルオロエタン、1,1,1−トリフルオロエタン、1,1−ジフルオロエタン、1,1,1,2,3,3,3−ヘプタフルオロプロパン、1,1,2,2,3,3−ヘキサフルオロプロパン、1,1,1,3,3,3−ヘキサフルオロエタン、1,1,2,2,3−ペンタフルオロペンタン、1,1,1,4,4,4−ヘキサフルオロブタンおよび1,1,1,3,3−ペンタフルオロブタンである、請求項1〜5のいずれか一項に記載のプロセス。
- 前記出発のセラミック体が、軸方向に延長する多孔性壁との交差によって画成される1つまたは複数の軸方向に延長するセルを有するハニカムである、請求項1〜6のいずれか一項に記載のプロセス。
- 前記セラミック体の製品の表面積が出発のセラミック体のものの1.5〜10倍まで増加される、請求項1〜7のいずれか一項に記載のプロセス。
- 前記セラミック体の表面上に金属を堆積させる工程を、工程b)の後にさらに含む、請求項1〜8のいずれか一項に記載のプロセス。
- アルミン酸塩が針状ムライトでなく、セラミック体が孔の少なくともいくつかの内部表面へ結合する針状ムライト結晶を有する、多孔性アルミン酸塩含有セラミック体。
- 前記アルミン酸塩が、アルミナ、チタン酸アルミニウム、非針状ムライト、コーディエライトおよびアルカリアルミノケイ酸塩から選択される、請求項10に記載のセラミック体。
- 前記出発のセラミック体が、孔の存在以外は、理論密度の少なくとも90%まで緻密化される、請求項10または11のいずれか一項に記載のセラミック体。
- 約30%〜85%の多孔率を有する、請求項10〜12のいずれか一項に記載のセラミック体。
- 前記孔のサイズが、水銀ポロシメータによって測定されたとき、5〜50ミクロンである、請求項10〜13のいずれか一項に記載のセラミック体。
- 軸方向に延長する多孔性壁との交差によって画成される1つまたは複数の軸方向に延長するセルを有するハニカムである、請求項10〜14のいずれか一項に記載のセラミック体。
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US10624928B2 (en) | 2014-10-06 | 2020-04-21 | Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation | Composition for treatment of joint disease and method thereof |
JP2022104774A (ja) * | 2020-12-29 | 2022-07-11 | 韓國セラミック技術院 | 輸送機関のブレーキ装置で発生した微小粒子状物質を捕集するための捕集装置 |
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CN106119966A (zh) * | 2016-06-17 | 2016-11-16 | 天津大学 | 在富铝纤维毡上原位生长莫来石晶须的方法 |
DE102021104560A1 (de) | 2021-02-25 | 2022-08-25 | Benteler Maschinenbau Gmbh | Ofenrolle und Rollenofen |
WO2023237054A1 (en) * | 2022-06-09 | 2023-12-14 | Basf Corporation | Gasoline particulate filter |
CN117003546B (zh) * | 2023-05-22 | 2024-06-18 | 重庆科技学院 | 一种发泡陶瓷及其制备方法 |
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JP2022104774A (ja) * | 2020-12-29 | 2022-07-11 | 韓國セラミック技術院 | 輸送機関のブレーキ装置で発生した微小粒子状物質を捕集するための捕集装置 |
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