JP6670754B2 - 複合体、複合体の製造方法、アンモニア合成触媒及びアンモニア合成方法 - Google Patents
複合体、複合体の製造方法、アンモニア合成触媒及びアンモニア合成方法 Download PDFInfo
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- JP6670754B2 JP6670754B2 JP2016562708A JP2016562708A JP6670754B2 JP 6670754 B2 JP6670754 B2 JP 6670754B2 JP 2016562708 A JP2016562708 A JP 2016562708A JP 2016562708 A JP2016562708 A JP 2016562708A JP 6670754 B2 JP6670754 B2 JP 6670754B2
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- catalyst
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- 239000003054 catalyst Substances 0.000 title claims description 166
- 239000002131 composite material Substances 0.000 title claims description 123
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- 230000015572 biosynthetic process Effects 0.000 title claims description 86
- 238000004519 manufacturing process Methods 0.000 title claims description 49
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- 229910052751 metal Inorganic materials 0.000 claims description 226
- 239000002184 metal Substances 0.000 claims description 226
- 238000000034 method Methods 0.000 claims description 88
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- 150000003624 transition metals Chemical class 0.000 claims description 82
- -1 amide compound Chemical class 0.000 claims description 60
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- 239000002994 raw material Substances 0.000 claims description 47
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- 238000002156 mixing Methods 0.000 claims description 30
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- 238000004458 analytical method Methods 0.000 description 7
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
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- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- JUPWRUDTZGBNEX-UHFFFAOYSA-N cobalt;pentane-2,4-dione Chemical compound [Co].CC(=O)CC(C)=O.CC(=O)CC(C)=O.CC(=O)CC(C)=O JUPWRUDTZGBNEX-UHFFFAOYSA-N 0.000 description 2
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- AQBLLJNPHDIAPN-LNTINUHCSA-K iron(3+);(z)-4-oxopent-2-en-2-olate Chemical compound [Fe+3].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O AQBLLJNPHDIAPN-LNTINUHCSA-K 0.000 description 2
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- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
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- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
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- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- VUBLMKVEIPBYME-UHFFFAOYSA-N carbon monoxide;osmium Chemical group [Os].[Os].[Os].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-] VUBLMKVEIPBYME-UHFFFAOYSA-N 0.000 description 1
- NQZFAUXPNWSLBI-UHFFFAOYSA-N carbon monoxide;ruthenium Chemical group [Ru].[Ru].[Ru].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-] NQZFAUXPNWSLBI-UHFFFAOYSA-N 0.000 description 1
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- 239000002041 carbon nanotube Substances 0.000 description 1
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- 239000007809 chemical reaction catalyst Substances 0.000 description 1
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- 229910017052 cobalt Inorganic materials 0.000 description 1
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
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- BKFAZDGHFACXKY-UHFFFAOYSA-N cobalt(II) bis(acetylacetonate) Chemical compound [Co+2].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O BKFAZDGHFACXKY-UHFFFAOYSA-N 0.000 description 1
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- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
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- WIWBLJMBLGWSIN-UHFFFAOYSA-L dichlorotris(triphenylphosphine)ruthenium(ii) Chemical compound [Cl-].[Cl-].[Ru+2].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 WIWBLJMBLGWSIN-UHFFFAOYSA-L 0.000 description 1
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Description
(BET比表面積分析)
以下の実施例及び比較例のBET比表面積の測定は、対象物の表面に液体窒素温度で窒素ガスを吸着させ、単分子層吸着した窒素の量を測定した。分析条件は以下の通りである。
測定条件
装置:マイクロトラックベル社製 BELSORP-mini II
吸着ガス:窒素(99.99995%)
吸着温度:液体窒素温度(−196℃)
担体としてCeO2(比表面積81.4m2/g、JRC-CEO-3)を用いた以外は、実施例1と同様の方法により、カルシウムアミドが担持されたCeO2(以下、Ca(NH2)2/CeO2と表わす。)を得た。このCa(NH2)2/CeO2の比表面積は109m2/gであった。
<マイエナイト型化合物粉末の合成>
CaCO3及びAl2O3の各粉末をCaとAlの質量比が11:14となるように混合し、この混合物30gをアルミナ坩堝中にて1300℃加熱し、6時間維持した。得られた粉末をシリカガラス管内に挿入し1×10-4Paの真空中で1100℃、15時間加熱し、原料マイエナイト型化合物の粉末を得た。この段階でのマイエナイト型化合物粉末の比表面積は1m2/g以下であった。
Claims (11)
- 遷移金属と、担体と、Ca(NH 2 ) 2 で表される金属アミド化合物とを含む複合体であり、
前記複合体のBET比表面積が、10m2/g以上であり
前記複合体がアンモニア合成触媒用複合体であり、
前記担体は、金属酸化物又は炭素質担体であることを特徴とする複合体。 - 前記担体が、塩基性、中性、又は弱酸性の金属酸化物である請求項1に記載の複合体。
- 前記担体が、ZrO2、TiO2、CeO2、Al2O3、Nb2O5、Ta2O5、又はMgOから選ばれる少なくとも1種の金属酸化物である請求項1又は2に記載の複合体。
- 前記遷移金属がRuである請求項1〜3のいずれか1項に記載の複合体。
- 請求項1〜4のいずれか1項に記載の複合体を含む担持金属触媒。
- 請求項1〜4のいずれか1項に記載の複合体を含むアンモニア合成触媒。
- 請求項1〜4のいずれか1項に記載の複合体の製造方法であって、前記金属原子Caを含む金属原子源、前記担体、及び液体アンモニアを混合する工程及び、前記金属原子源と液体アンモニアを反応させ、前記金属アミド化合物を生成させ、生成された前記金属アミド化合物を、前記担体に担持して、金属アミド担持担体を得る工程を含むことを特徴とする複合体の製造方法。
- 前記金属アミド担持担体に、前記遷移金属の原料化合物(以下、遷移金属原料)を担持させる工程と、前記遷移金属原料を熱分解して前記遷移金属を析出させる工程を含むことを特徴とする請求項7に記載の複合体の製造方法。
- アンモニアの合成方法であって、窒素を含むガス及び水素を含むガスを、請求項6に記載のアンモニア合成触媒に接触させ、アンモニアを合成することを特徴とするアンモニア合成方法。
- 前記アンモニア合成触媒に接触させる際の温度が、100℃以上600℃以下である請求項9に記載のアンモニア合成方法。
- 前記アンモニア合成触媒に接触させる際の圧力が、10kPa以上20MPa以下である請求項9又は10に記載のアンモニア合成方法。
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