JP2013517934A - 押出しソリッド本体を含む三元触媒 - Google Patents
押出しソリッド本体を含む三元触媒 Download PDFInfo
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- JP2013517934A JP2013517934A JP2012550519A JP2012550519A JP2013517934A JP 2013517934 A JP2013517934 A JP 2013517934A JP 2012550519 A JP2012550519 A JP 2012550519A JP 2012550519 A JP2012550519 A JP 2012550519A JP 2013517934 A JP2013517934 A JP 2013517934A
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- Prior art keywords
- zeolite molecular
- molecular sieve
- metal
- weight
- way catalyst
- Prior art date
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- Granted
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- 239000003054 catalyst Substances 0.000 title claims abstract description 108
- 239000007787 solid Substances 0.000 title claims abstract description 99
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000010457 zeolite Substances 0.000 claims abstract description 124
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 123
- 239000002808 molecular sieve Substances 0.000 claims abstract description 115
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 113
- 229910052751 metal Inorganic materials 0.000 claims abstract description 107
- 239000002184 metal Substances 0.000 claims abstract description 107
- 239000000203 mixture Substances 0.000 claims abstract description 100
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 29
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 28
- 239000011230 binding agent Substances 0.000 claims abstract description 26
- 239000011247 coating layer Substances 0.000 claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 94
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 63
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 58
- 239000000377 silicon dioxide Substances 0.000 claims description 41
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 35
- 150000002739 metals Chemical class 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 29
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 27
- 239000012784 inorganic fiber Substances 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 20
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 19
- 239000011029 spinel Substances 0.000 claims description 18
- 229910052596 spinel Inorganic materials 0.000 claims description 18
- 239000010410 layer Substances 0.000 claims description 17
- 229910052878 cordierite Inorganic materials 0.000 claims description 16
- 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 16
- 229910000502 Li-aluminosilicate Inorganic materials 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 150000004767 nitrides Chemical class 0.000 claims description 15
- 229910052763 palladium Inorganic materials 0.000 claims description 15
- 229910052703 rhodium Inorganic materials 0.000 claims description 15
- 239000010948 rhodium Substances 0.000 claims description 15
- 229910052845 zircon Inorganic materials 0.000 claims description 15
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 15
- 229910052697 platinum Inorganic materials 0.000 claims description 12
- 239000011949 solid catalyst Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 11
- 150000002602 lanthanoids Chemical class 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims description 10
- -1 alkoxysilane Chemical compound 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 9
- 239000007858 starting material Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229910052723 transition metal Inorganic materials 0.000 claims description 8
- 150000003624 transition metals Chemical class 0.000 claims description 8
- 229910052684 Cerium Inorganic materials 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 5
- 239000002671 adjuvant Substances 0.000 claims description 5
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical group O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 4
- 229910020068 MgAl Inorganic materials 0.000 claims description 3
- 239000004113 Sepiolite Substances 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 3
- 229910052762 osmium Inorganic materials 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 229910021647 smectite Inorganic materials 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001657 ferrierite group Inorganic materials 0.000 claims description 2
- 229910000271 hectorite Inorganic materials 0.000 claims description 2
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 235000015067 sauces Nutrition 0.000 claims 2
- 239000011260 aqueous acid Substances 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 description 35
- 239000000758 substrate Substances 0.000 description 25
- 241000264877 Hippospongia communis Species 0.000 description 19
- 239000007789 gas Substances 0.000 description 19
- 230000008569 process Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 11
- 229910010413 TiO 2 Inorganic materials 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 8
- 229920002678 cellulose Polymers 0.000 description 8
- 239000001913 cellulose Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
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- 239000007864 aqueous solution Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000010970 precious metal Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
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- 238000001179 sorption measurement Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- ZZBAGJPKGRJIJH-UHFFFAOYSA-N 7h-purine-2-carbaldehyde Chemical compound O=CC1=NC=C2NC=NC2=N1 ZZBAGJPKGRJIJH-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
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- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 239000003607 modifier Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 239000010944 silver (metal) Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical group CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
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Abstract
Description
(i)触媒媒煙フィルタは、ウォールフローフィルタで基本的に以下のように構成された押出しソリッド本体を含む:15-70重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、スピネル、選択的にドーピングされたアルミナ、チタニア、ジルコニア、チタニア−ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、0-20重量%のシリカソース、それぞれが1つ以上の金属を含有する5-50重量%のゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、20-80重量%の選択的に安定化したセリア、及び0-20重量%の無機繊維。押出しソリッド触媒本体は、少なくとも1つの貴金属と2つ以上の貴金属の組み合わせを含む1つ以上の層でコーティングされる。
(ii)三元触媒は、フロースルー構造で基本的に以下のように構成された押出しソリッド本体を含む:15-30重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、スピネル、選択的にドーピングされたアルミナ、チタニア、ジルコニア、チタニア−ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、0-20重量%のシリカソース、それぞれが1つ以上の金属を含有する5-81重量%のゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、0-20重量%の無機繊維。押出しソリッド触媒本体は、大部分のγ-アルミナとパラジウムのみを担持する安定化したセリアの混合物、大部分のパラジウムとロジウムの混合物、白金とロジウムの混合物又は白金、パラジウム及びロジウムの混合物を含む単一層でコーティングされる。
押出しゼオライトモノリス基材がUS7,507,684に開示されたものと類似の方法で製造された。水素形態の商業的に利用可能な粉末βゼオライトがガラス繊維、カオリンフィラー及び粉末合成ベーマイト(Pural SB)と混合され、5-6のpH値を有する水溶液で処理され、セルロース(CMC-QP10000H)、可塑剤Zusoplast(Zschimmer&Schwarz GmbH&Co KGのブランド名)と有機補助剤PEOアルコックス(ポリエチレン酸化物)の混合物により成形可能であり、流動可能なスリップに製造される。前記出発物質の量的比率は、最終ソリッド触媒本体の活性物質が69重量%のゼオライト、23重量%のγ-Al2O3及び5重量%のガラス繊維及び3重量%のカオリンを含むように選択される。前記成形可能な混合物は、300cpsi又は400cpsiのセル密度を有する1”直径×3”長さのフロースルーハニカム触媒本体(即ち、連続したチャネルと円形の断面を有する)内に押し出される。次に、前記触媒本体は、WO2009/080155(全体内容が参照としてここに含まれる)に説明された方法により1時間2mbarで冷却乾燥し、ソリッド触媒本体を形成するために、580℃の温度で焼成される。
実施形態1の300cpsi及び400cpi 1”×3”押出しゼオライトモノリス基材サンプルは、WO99/47260(ここで全体内容が参照として含まれる)に開示された方法(即ち、(a)モノリス式支持体の上部に保持手段を位置させる段階、(b)前記保持手段内に予め設定された量の液体成分を提供する段階((a)と(b)の順序は、(a)の次(b)、又は(b)の次(a))、(c)前記液体成分の全体を前記モノリス式支持体の少なくとも一部に吸い込むために真空を加え、前記液体成分の全体を前記モノリス式支持体内に再生なしに維持させる段階を含むモノリス式支持体のコーティング方法。)を用いて大部分のγ-アルミナとパラジウム(大部分)とロジウムを担持するセリア-ジルコニアの混合酸化物の混合物を含む三元触媒組成物の単一層でウォッシュコートされる。結果物は乾燥し、600℃で焼成される。
商業的に利用可能な300cpsiのコーディエライトモノリス基材が乾燥及び600℃での焼成後にβゼオライトとコロイド性シリカを含む第1層で(WO99/47260の技術によって)ウォッシュコートされた。実施形態2に係る第2の三元触媒層が前記第1のβゼオライト層の上を覆う層であって、ウォッシュコートで塗布された。結果物は乾燥し、600℃で焼成された。1”×3”のコアがコーティングされたモノリス基材から得られる。
実施形態2の触媒サンプルと比較実施形態3が、次の段階によって実験室SCAT(Synthetic Catalyst Activity Test)リグ(rig)を用いてテストされた:
(i)N2(バランス)内5%の酸素で15分間希薄事前-処理後にN2で30℃に冷却、
(ii)0.15%HC(17体積%のトルエン、24体積%のイソペンタン、59体積%のプロピレン)、0.1%CO、10%H2O蒸気及びバランス圧縮空気の16L/min(25K/h SV)での触媒バイパスにベースラインの供給導入、
(iii)データ収集開始及び30秒待機、
(iv)HCの供給を30秒間サンプルに送り、30℃-40℃で吸着維持、
(iv)ガス供給を触媒バイパスを介して送る、
(v)供給から空気、HC及びCOの除去及び16L/minを維持するためにN2でリバランス、
(vi)ガス供給をサンプルに再び提供し、30℃から550℃まで40℃/minで温度を変化、
(vii)データ収集終了、N2をサンプルを貫通させて30℃に冷却、及び
(viii)ガスの流れをバイパスに転換
実施形態1で他の押出しゼオライトモノリス基材がUS7,507,684に開示された方法と類似の方法により製造された。水素形態(Tosoh)の商業的に利用可能な粉末βゼオライトがガラス繊維(Vetrotex 4、5mm(Saint-Gobain))、低アルカリクレーフィラー及び粉末合成ベーマイト(Pural SB)と混合され、5-6のpH値を有する水溶液で処理され、8重量%のセルロース(全体無機ソリッド成分に基づく)(CVP-M-5280(Dow Wolff Cellulosics))により成形可能であり、流動可能なスリップに製造される。前記出発物質の量的比率は、最終ソリッド触媒本体の活性物質が60重量%のゼオライト、25重量%のクレー、7重量%のγ-Al2O3及び8重量%のガラス繊維を含むように選択される。前記成形可能な混合物は、適切なセル密度を有するフロースルーハニカム触媒本体(即ち、連続したチャネルと円形の断面を有する)内に押し出される。次に、前記触媒本体は、WO2009/080155(全体内容が参照としてここに含まれる)に説明された方法により1時間2mbarで冷却乾燥し、ソリッド触媒本体を形成するために、580℃の温度で焼成される。
混練可能なペーストを製造するために、表1に記載された成分A、B、FとSを水と混合することで、参照押出しV2O5/WOx-TiO2ソリッド本体が実施形態1及び5と類似に用意された。添加剤H(孔隙変更剤)が追加され、前記物質は孔隙変更剤を分散させるために、10分間混練された。結果組成物は、実施形態1及び5で説明されたように押し出され、乾燥し、焼成された。最終的に焼成された製品に存在する無機ソリッド量の百分率は100%である。焼成過程で燃焼により除去される添加剤(HとS)の量は、100%無機ソリッド成分に対して重量%で提供される。
A2=V2O5 from AMV(78%V2O5、GFE)
B1=ベントナイト(90%、ACE/Mizuka)
B2=カオリン(97、9%、TK0177/Thiele)
B3=SiO2(100%、Tixosil/Novus)
F1=ガラス繊維(Vetrotex 4、5mm/Saint Cobain)
H1=セルロース(QP10000H/Nordmann)
H2=PEO(Alkox/Alroko)
H3=Zusoplast(Zschimmer & Schwarz)
S1=MEA(Imhoff & Stahl)
S2=NH3
S3=C3H6O3(fauth)
これは例示的な実施形態である。触媒ウォールフローフィルタモノリス基材が以下のように製造され得る。適切な量のCeO2-ZrO2混合酸化物が、ガラス繊維、粉末合成ベーマイト(Pural SB)及びβゼオライトと混合され、3.5のpH値を有する水溶液で処理され、1.5重量%のセルロース(CMC-QP1000H)、1.0重量%の有機補助剤PEOアルコックス(ポリエチレン酸化物)及び孔隙変更剤Rettenmaier BC200とポリアクリロニトリル(PAN)繊維の混合物13重量%を含む成形可能であり、流動可能なスリップに製造される。前記出発物質の量的比率は、最終ソリッド触媒本体の活性物質が25重量%のCeO2、15重量%のβゼオライト、52重量%のγ-Al2O3及び8重量%のガラス繊維を含むように選択される。前記成形可能な混合物は、300cpsiのセル密度を備え、連続したチャネルと円形の断面を有するフロースルーハニカム触媒本体内に押し出される。次に、前記触媒本体は、WO2009/080155(全体内容が参照としてここに含まれる)に説明された方法により1時間2mbarで冷却乾燥し、ソリッド触媒本体を形成するために、580℃の温度で焼成される。結果製品は一般に約10μmの平均孔隙サイズを有するようになる。
Claims (35)
- 押出しソリッド本体を備えた三元触媒であって、
10-100重量%の少なくとも1つのバインダ/マトリックス成分、
5-90重量%のゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、及び
0-80重量%の選択的に安定化したセリアを含む押出しソリッド本体を備えてなり、
前記触媒が、少なくとも1つの貴金属と選択的に少なくとも1つの非貴金属を含んでなり、
(i)前記少なくとも1つの貴金属が、前記押出しソリッド本体の表面上の少なくとも1つのコーティング層に収容されてなり、
(ii)少なくとも1つの金属が、前記押出しソリッド本体の全体に渡って存在し、少なくとも1つの貴金属も前記押出しソリッド本体の表面上の1つ以上のコーティング層に収容されてなり、又は
(iii)少なくとも1つの金属が前記押出しソリッド本体の全体に渡って存在し、前記押出しソリッド本体の表面に更に高い濃度で存在し、及び少なくとも1つの貴金属も前記押出しソリッド本体の表面上の1つ以上のコーティング層に収容されてなる、三元触媒。 - 前記少なくとも1つの金属が、前記混合物にゼオライトモレキュラシーブ成分、非ゼオライトモレキュラシーブ成分又は前記ゼオライトモレキュラシーブと前記非ゼオライトモレキュラシーブ成分の少なくとも1つに結合される、請求項1に記載の触媒。
- 前記押出しソリッド本体が、前記混合物にゼオライトモレキュラシーブ成分、非ゼオライトモレキュラシーブ成分又は前記ゼオライトモレキュラシーブと前記非ゼオライトモレキュラシーブ成分の少なくとも1つに結合される少なくとも1つの第1金属と、
前記混合物にゼオライトモレキュラシーブ成分、非ゼオライトモレキュラシーブ成分又は前記ゼオライトモレキュラシーブと前記非ゼオライトモレキュラシーブ成分の少なくとも1つに結合される少なくとも1つの第2金属とを含んでなる、請求項2に記載の触媒。 - 前記少なくとも1つの金属が、
前記押出しソリッド本体の全体に渡って存在し、
前記混合物に前記ゼオライトモレキュラシーブ成分、前記非ゼオライトモレキュラシーブ成分又は前記ゼオライトモレキュラシーブと前記非ゼオライトモレキュラシーブ成分の少なくとも1つに結合されないものであり、
前記少なくとも1つの金属の大部分が前記押出しソリッド本体の表面に位置し、又は
前記押出しソリッド本体上の1つ以上のコーティング層に存在し、前記押出しソリッド本体が、アルカリ金属、アルカリ土金属、ランタナイド又はこれらのうち2つ以上の混合物からなる群より選択される少なくとも1つの金属を含んでなるものである、請求項1〜3の何れか一項に記載の三元触媒。 - 前記貴金属が、Pt、Au、Ag、Ir、Ru、Rh、Pd及びOsからなる群より選択される、請求項1〜4の何れか一項に記載の三元触媒。
- 前記ランタナイド金属が、La、Pr及びCeからなる群より選択される、請求項4に記載の三元触媒。
- 前記アルカリ金属が、Csである、請求項4に記載の三元触媒。
- 前記押出しソリッド本体の全体に渡って存在するが、前記混合物に前記ゼオライトモレキュラシーブ成分、前記非ゼオライトモレキュラシーブ成分又は前記ゼオライトモレキュラシーブと前記非ゼオライトモレキュラシーブ成分の少なくとも1つに結合されないか、
前記少なくとも1つの金属の大部分が前記押出しソリッド本体の表面に位置するか、
前記押出しソリッド本体上の1つ以上のコーティング層に存在するか、アルカリ金属、アルカリ土金属、ランタナイド又はこれらのうち2つ以上の混合物からなる群より選択される少なくとも1つの金属を含む前記押出しソリッド本体の表面に更に高い濃度で存在する前記全体金属成分が、0.1〜30重量%である、請求項1〜7の何れか一項に記載の三元触媒。 - 前記押出しソリッド本体が、
10-100重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、選択的にドーピングされたアルミナ、シリカソース、チタニア、ジルコニア、チタニア-ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、
0-80重量%のスピネル、
5-90重量%のそれぞれが1つ以上の金属を選択的に含有するゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、
0-80重量%の選択的に安定化したセリア、及び
0-25重量%の無機繊維を含んでなる、請求項1〜8の何れか一項に記載の三元触媒。 - 前記押出しソリッド本体が、本的に、
10-100重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、スピネル、選択的にドーピングされたアルミナ、シリカソース、チタニア、ジルコニア、チタニア-ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、
50-90重量%のそれぞれが1つ以上の金属を選択的に含有するゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、及び
0-25重量%の無機繊維からなる、請求項9に記載の三元触媒。 - 前記押出しソリッド本体が、基本的に、
10-100重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、選択的にドーピングされたアルミナ、スピネル、シリカソース、チタニア、ジルコニア、チタニア-ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、
50-90重量%のそれぞれが1つ以上の金属を選択的に含有するゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、
20-80重量%の選択的に安定化したセリア、及び
0-25重量%の無機繊維からなる、請求項9に記載の三元触媒。 - ウォールフローフィルタの形態である、請求項1〜11の何れか一項による三元触媒。
- 前記ウォールフローフィルタの孔隙率が、30-80%である、請求項12に記載の三元触媒。
- 請求項1〜13の何れか一項による三元触媒媒煙フィルタであって、
ウォールフローフィルタ構造として押出しソリッド本体を備えてなり、
前記押出しソリッド触媒本体が、基本的に、
15-70重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、スピネル、選択的にドーピングされたアルミナ、チタニア、ジルコニア、チタニア-ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、
0-20重量%のシリカソース、
5-50重量%のそれぞれが1つ以上の金属を選択的に含有するゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、
20-80重量%の選択的に安定化したセリア、及び
0-20重量%の無機繊維を含んでなり、
前記押出しソリッド触媒本体が、少なくとも1つの貴金属と2つ以上の貴金属の組み合わせを含む1つ以上の層でコーティングされた、三元触媒媒煙フィルタ。 - 請求項1〜13の何れか一項による三元触媒であって、
フロースルー構造として押出しソリッド本体を備えてなり、
前記フロースルー構造が基本的に、
15-30重量%のコーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、スピネル、選択的にドーピングされたアルミナ、チタニア、ジルコニア、チタニア-ジルコニア、ジルコン及びこれらのうち2つ以上の混合物、
0-20重量%のシリカソース、
50-81重量%のそれぞれが1つ以上の金属を選択的に含有するゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、及び
0-20重量%の無機繊維を含み、
前記押出しソリッド触媒本体が、多数のγ-アルミナとパラジウムのみを担持する安定化したセリアの混合物、パラジウムとロジウムの混合物、白金とロジウムの混合物又は白金、パラジウムとロジウムの混合物を含む単一層でコーティングされる、三元触媒。 - 前記少なくとも1つのバインダ/マトリックス成分が、コーディエライト、窒化物、炭化物、ホウ化物、合金、リチウムアルミノ珪酸塩、スピネル、選択的にドーピングされたアルミナ、シリカソース、チタニア、ジルコニア、チタニア-ジルコニア、ジルコン及びこれらのうち2つ以上の混合物からなる群より選択される、請求項1〜15の何れか一項に記載の三元触媒。
- 前記スピネルがMgAl2O4であるか、
前記MgがCo、Zr、Zn又はMnからなる群よりの金属で部分的に置換された、請求項1〜16の何れか一項に記載の三元触媒。 - 前記シリカソースが、シリカ、シリカゾル、石英、溶融又は無定形のシリカ、珪酸ナトリウム、無定形のアルミノ珪酸塩、アルコキシシラン、シリコン樹脂バインダ、クレー、タルク又はこれらのうち2つ以上の混合物である、請求項16又は17に記載の三元触媒。
- 前記クレーが、フラー土、セピオライト、ヘクトライト、スメクタイト、カオリン及びこれらのうち2つ以上の混合物からなる群より選択される、請求項18に記載の三元触媒。
- 前記無機繊維が、炭素繊維、ガラス繊維、金属繊維、ホウ素繊維、アルミナ繊維、シリカ繊維、シリカ-アルミナ繊維、炭化珪素繊維、チタン酸カリウム繊維、ホウ酸アルミニウム繊維及びセラミック繊維からなる群より選択される、請求項16〜19の何れか一項に記載の三元触媒。
- 前記ゼオライトモレキュラシーブ又は非ゼオライトモレキュラシーブが、下記のフレームワーク形態のコード:
国際ゼオライト協会の構造委員会により定義されたABW、AEL、AET、AFG、AFI、AFO、AFR、AFS、AFY、AHT、AST、ASV、ATN、ATO、ATS、ATV、AWO、AWW、BCT、BEA、BEC、BIK、BOF、BOG、BPH、BRE、BSV、CAN、CAS、CFI、CGF、CGS、-CHI、-CLO、CON、CZP、DAC、DFO、DOH、DON、EMT、EON、ETR、EUO、EZT、FAR、FAU、FER、FRA、GIU、GME、GON、HEU、IFR、IMF、ITH、ITR、IWS、IWV、IWW、JBW、JRY、LIO、-LIT、LOS、LOV、LTF、LTL、LTN、MAR、MAZ、MEI、MEL、MEP、MFI、MFS、MOR、MOZ、MRE、MSE、MOS、MTF、MTN、MTT、MTW、MWW、NAB、NAT、NES、NON、NPO、OBW、OFF、OSI、OSO、-PAR、PON、-RON、RRO、RSN、RTE、RUT、RWR、RWY、SAO、SAS、SBE、SBS、SBT、SFE、SFF、SFG、SFH、SFN、SFO、SFS、SGT、SOD、SOF、SOS、SSF、SSY、STF、STI、STO、STT、STW、-SVR、SZR、TER、TOL、TON、TUN、UOS、UOZ、USI、UTL、VET、VFI、VSV、WEI又は-WEN及びこれらのうち2つ以上の混合物を有する、請求項1〜20の何れか一項に記載の三元触媒。 - 前記ゼオライトモレキュラシーブが、ZSM-5、ベータ、フェリエライト及びこれらのうち2つ以上の混合物からなる群より選択される、請求項1〜21の何れか一項に記載の三元触媒。
- 前記ゼオライトモレキュラシーブが、10以上のシリカ-アルミナ比を有するアルミノ珪酸塩ゼオライトである、請求項1〜22の何れか一項に記載の三元触媒。
- 前記ゼオライトモレキュラシーブ又は非ゼオライトモレキュラシーブは、1つ以上の置換フレームワーク金属を含む同形体である、請求項21〜23の何れか一項に記載の三元触媒。
- 前記非ゼオライトモレキュラシーブが、リン酸アルミニウムである、請求項21に記載の三元触媒。
- 前記セリアが、前記セリアの熱安定性を向上させるために、少なくとも1つの非セリウム成分で安定化される、請求項1〜25の何れか一項に記載の三元触媒。
- 請求項1〜26の何れか一項に記載の三元触媒であって、
前記少なくとも1つの金属が、それぞれ
(a)前記押出しソリッド本体の全体に渡って存在し、
(b)前記押出しソリッド本体の表面で更に高い濃度で存在し、
(c)前記押出しソリッド本体の表面上の1つ以上のコーティング層に収容されてなり、
前記(ii)、又は前記(iii)における金属が、他の位置に存在する前記少なくとも1つの金属と異なるウォールフローフィルタ。 - ゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物を含んでなり、
前記少なくとも1つの金属が、前記混合物に前記ゼオライトモレキュラシーブ、前記非ゼオライトモレキュラシーブ又は前記ゼオライトモレキュラシーブと前記非ゼオライトモレキュラシーブのうち少なくとも1つと結合される、請求項1〜27の何れか一項に記載の三元触媒。 - 前記ゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれら2つ以上の混合物内の2つのモレキュラシーブのうち少なくとも1つと結合されている前記各少なくとも1つの金属が、遷移金属、ランタナイド又はこれらのうち2つ以上の混合物からなる群より選択される1つ以上の金属を含んでなる、請求項28に記載の三元触媒。
- 前記遷移金属が、Cu、Pd及びAgからなる群より選択される、請求項29に記載の三元触媒。
- 前記混合物内で前記ゼオライトモレキュラシーブ成分、前記非ゼオライトモレキュラシーブ成分又は前記ゼオライトモレキュラシーブ成分と前記非ゼオライトモレキュラシーブ成分のうちの少なくとも1つと結合されている前記少なくとも1つの金属で全体金属含有量が、0.1〜20重量%である、請求項28、29又は30に記載の三元触媒。
- 請求項1〜31の何れか一項による三元触媒を製造する方法であって、
粉末の出発物質を混合してソリッド押出し本体を形成し、
前記粉末の出発物質が、少なくとも1つのバインダ/マトリックス成分又はこれの1つ以上の前駆体、少なくとも1つの金属に結合されるゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、選択的に安定化したセリア、及び選択的な少なくとも1つの金属化合物、選択的無機繊維、選択的に添加された有機補助剤であり、
少なくとも1つの金属の金属塩を選択的に含有する酸又はアルカリ水溶液でプラスチック化合物内に混合物を形成するように、混合及び/又は混練を通じて処理し、
前記混合物が触媒本体に押し出し、前記触媒本体を乾燥させ、ソリッド押出し本体を形成するために焼成し、
前記ソリッド押出し本体が、10-100重量%の少なくとも1つのバインダ/マトリックス成分、及び5-90重量%のゼオライトモレキュラシーブ、非ゼオライトモレキュラシーブ又はこれらのうち2つ以上の混合物、及び0-80重量%の選択的に安定化したセリアを含有するように前記出発物質の比率を選択し、
前記ソリッド押出し本体の表面を少なくとも1つの貴金属でコーティングし、
選択的に前記ソリッド押出し本体の表面を少なくとも1つの金属で含浸することを含んでなる、製造方法。 - 固定型発生源又は車両の内燃機関から発生した排気ガスを処理する方法であって、
前記排気ガスを請求項1〜31の何れか一項による三元触媒と接触させることを含んでなる、方法。 - 請求項1〜39の何れか一項による三元触媒を含んでなる、内燃機関用排気システム。
- 内燃機関及び請求項34による排気システムを備えてなる、車両。
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