JP2012525246A - メタンの電気化学的酸化のための触媒及び方法 - Google Patents
メタンの電気化学的酸化のための触媒及び方法 Download PDFInfo
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- JP2012525246A JP2012525246A JP2012507793A JP2012507793A JP2012525246A JP 2012525246 A JP2012525246 A JP 2012525246A JP 2012507793 A JP2012507793 A JP 2012507793A JP 2012507793 A JP2012507793 A JP 2012507793A JP 2012525246 A JP2012525246 A JP 2012525246A
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- precursor
- catalyst
- platinum
- methane
- heteropolyanion
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000003054 catalyst Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims description 23
- 238000006056 electrooxidation reaction Methods 0.000 title abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 74
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 43
- 239000002243 precursor Substances 0.000 claims abstract description 42
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 27
- 239000000446 fuel Substances 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 36
- 230000003647 oxidation Effects 0.000 claims description 35
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 30
- 239000002904 solvent Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 15
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical compound N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910021397 glassy carbon Inorganic materials 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- HRGDZIGMBDGFTC-UHFFFAOYSA-N platinum(2+) Chemical compound [Pt+2] HRGDZIGMBDGFTC-UHFFFAOYSA-N 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000003446 ligand Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical group Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 claims description 4
- FOSZYDNAURUMOT-UHFFFAOYSA-J azane;platinum(4+);tetrachloride Chemical compound N.N.N.N.[Cl-].[Cl-].[Cl-].[Cl-].[Pt+4] FOSZYDNAURUMOT-UHFFFAOYSA-J 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000003058 platinum compounds Chemical class 0.000 claims description 2
- 239000013110 organic ligand Substances 0.000 claims 2
- 150000002500 ions Chemical class 0.000 description 18
- 239000000243 solution Substances 0.000 description 17
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- -1 C 4 alcohols Chemical class 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229920000447 polyanionic polymer Polymers 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 101710134784 Agnoprotein Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 238000012443 analytical study Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229940045985 antineoplastic platinum compound Drugs 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000001869 cobalt compounds Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
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Abstract
【選択図】なし
Description
(a)直鎖若しくは分岐状のC1〜C4アルコール、直鎖若しくは分岐状のC1〜C4アルコールの混合物、又は水と少なくとも1つの直鎖若しくは分岐状のC1〜C4アルコールとの混合物から選択される溶媒中に、H4SiW12O40及びK6P2W18O62から選択されるヘテロポリアニオンHPAを溶解させる工程、
(b)電子を伝導する材料で作られる支持体の少なくとも1つの表面上に工程(a)で得られる溶液を堆積させる工程、
(c)工程(b)で堆積させた溶液から溶媒を蒸発させる工程、
(d)工程(c)で得られるヘテロポリアニオンで覆った表面全体に、水、水と少なくとも1つの直鎖又は分岐状のC1〜C4アルコールとの混合物、及び直鎖又は分岐状のC1〜C4アルコールの混合物から選択される溶媒中に、有機リガンド又は無機リガンドによって必要に応じて錯体形成される酸化状態IIの白金前駆物質、並びにAg+、Ru2+、Co2+、Ni2+、Fe2+及びこれらの2つ以上の混合物から選択される金属イオン(複数可)Mの前駆物質を含む溶液を噴霧する工程、
(e)工程(d)で噴霧した溶液から溶媒を蒸発させる工程
を含むことを特徴とする、方法を提供する。
実施例1:
メタンの酸化の分析研究のための電極の調製
1mL当たり10mgの濃度のイソプロパノール中のケギンヘテロポリアニオン(H4SiW12O40)の溶液、又は1mL当たり5mgの濃度の水/イソプロパノール中のドーソンヘテロポリアニオン(K6P2W18O62)の溶液2μLを、直径3ミリメートルのグラッシーカーボンの研磨した表面上に堆積させる。イソプロパノール溶媒の蒸発後、2×10−5Mの濃度の酸化状態IIの白金イオンの前駆物質(この場合、PtCl2、Pt(Bipy)Cl2又はPt(NH3)4Cl2)及び0.08Mの濃度のAgNO3の形態の金属イオンAg+の前駆物質を含む混合物2μLを堆積させる。使用する溶媒は、水又は水/イソプロパノール混合物である。続いて、この溶媒を蒸発させる。ネオン電球の下で、H4SiW12O40を用いた場合には、このフィルムが薄い場合、複数色に呈色した輪(areola)が見られ、又はK6P2W18O62を用いた場合は、オフホワイト色の輪が見られる。
実施例2:
メタンのCO2への直接変換に関する実施例1で得られる電極の試験
実施例1で得られる電極を、Na2SO4/H2SO4の緩衝溶液(pH3)へ浸して、電流が安定化するまでアルゴン下で飽和カロメル電極(SCE)に関して0.9ボルト〜1.7ボルトで循環させる。およそ30分〜1時間かかる。次に、溶液を、表面でのメタンの拡散によって飽和させる。飽和は緩やかに進む。触媒作用は、3時間超持続し得る。
実施例3:
本発明による触媒を用いた高表面積の電極の調製
1mL当たり10mgの濃度のイソプロパノール中のケギンヘテロポリアニオン(H4SiW12O40)の溶液、又は1mL当たり5mgの濃度の水/イソプロパノール中のドーソンヘテロポリアニオン(K6P2W18O62)の溶液を、3cm2の研磨グラッシーカーボン表面全体に噴霧する。
実施例4:
メタンのCO2への直接変換に関する実施例3の電極の試験
実施例3で得られる電極を、0.1M Na2SO4の緩衝溶液(pH3)で満たした2区画セルの区画中に浸す。セルの他の区画は、バルク白金で作られる電極を含む。メタンの触媒との接触により、バルク白金電極(陽極)と本発明による電極(陰極)との間の電位差が、0.4ボルトまで増加し、これにより、CH4の触媒への固定が明らかに示される。
実施例5:メタン燃料電池用の電極の調製
1mL当たり10mgの濃度のイソプロパノール中のケギンヘテロポリアニオン(H4SiW12O40)の溶液、又は1mL当たり5mgの濃度の水/イソプロパノール中のドーソンヘテロポリアニオン(K6P2W18O62)の溶液1mLを、25cm2のチタンスポンジ全体に噴射する。イソプロパノールを蒸発させる。次に、イソプロパノール0.3mL中の前駆物質PtCl2、Pt(Bipy)Cl2又はPt(NH3)4Cl2の形態で添加される10−4Mの濃度の酸化状態IIの白金イオンを含む溶液0.1mLと、10−1Mの濃度の金属イオンAg+とを含む溶液0.1mLを含む溶液を、ヘテロポリアニオンで覆われたチタンフォームの表面上に堆積させる。
Claims (22)
- ヘテロポリアニオンHPAの粒子上に支持される白金(II)前駆物質、及び必要に応じて、金属イオン(複数可)Mの前駆物質を含むこと、並びに前記白金(II)前駆物質が、有機リガンド又は無機リガンドによって必要に応じて錯体形成される酸化状態IIの白金前駆物質であることを特徴とする触媒であって、
Mが、Ag+、Ru2+、Ni2+、Co2+、Fe2+及びこれらの2つ以上の混合物から選択される金属イオンであり、
前記ヘテロポリアニオンHPAが、H4SiW12O40及びK6P2W18O62から選択される、触媒。 - 金属イオン(複数可)Mを含まないことを特徴とする、請求項1に記載の触媒。
- 少なくとも1つの金属イオンMを含むことを特徴とする、請求項1に記載の触媒。
- 前記白金(II)前駆物質が、(Bipy)PtCl2又はPt(NH3)4Cl2であることを特徴とする、請求項1〜4のいずれか一項に記載の触媒。
- 金属イオン(複数可)の前記前駆物質が、Ag+前駆物質であることを特徴とする、請求項1及び3〜5のいずれか一項に記載の触媒。
- 前記ヘテロポリアニオンHPAが、K6P2W18O62であることを特徴とする、請求項1〜6のいずれか一項に記載の触媒。
- メタンのメタノールへの変換のための請求項1〜7のいずれか一項に記載の触媒の使用。
- メタンのCO2への変換のための請求項1及び3〜7のいずれか一項に記載の触媒の使用。
- その少なくとも1つの表面上に請求項1及び3〜7のいずれか一項に記載の触媒が堆積している、電子を伝導する材料で作られる支持体を含むことを特徴とする電極、特に燃料電池の電極。
- 前記電子を伝導する前記材料が、バルクグラッシーカーボン、グラッシーカーボンファブリック、グラッシーカーボンフェルト、又はチタン金属のスポンジから選択されることを特徴とする、請求項10に記載の電極。
- 請求項10又は11に記載の電極の製造方法であって、
(a)直鎖若しくは分岐状のC1〜C4アルコール、直鎖若しくは分岐状のC1〜C4アルコールの混合物、又は水と少なくとも1つの直鎖若しくは分岐状のC1〜C4アルコールとの混合物から選択される溶媒中に、H4SiW12O40及びK6P2W18O62から選択されるヘテロポリアニオンHPAを溶解させる工程、
(b)電子を伝導する材料で作られる支持体の少なくとも1つの表面上に工程(a)で得られる前記溶液を堆積させる工程、
(c)工程(b)で堆積させた前記溶液から前記溶媒を蒸発させる工程、
(d)工程(c)で得られるヘテロポリアニオンでコーティングした前記表面全体に、水、水と少なくとも1つの直鎖又は分岐状のC1〜C4アルコールとの混合物、直鎖又は分岐状のC1〜C4アルコール、及び直鎖又は分岐状のC1〜C4アルコールの混合物から選択される溶媒中に、有機リガンド又は無機リガンドによって必要に応じて錯体形成される酸化状態IIの白金前駆物質、並びにAg+、Ru2+、Co2+、Ni2+、Fe2+及びこれらの2つ以上の混合物から選択される金属イオン(複数可)Mの前駆物質を含む溶液を噴霧する工程、並びに
(e)工程(d)で噴霧した前記溶液から前記溶媒を蒸発させる工程
を含むことを特徴とする、方法。 - 工程(a)及び工程(c)における前記溶媒が、イソプロパノールであることを特徴とする、請求項12に記載の方法。
- 電子を伝導する前記材料が、バルクグラッシーカーボン、カーボンフェルト、カーボンファブリック、及びチタン金属のスポンジから選択されることを特徴とする、請求項12又は13に記載の方法。
- 酸化状態IIの前記白金前駆物質が、PtCl2、(Bipy)PtCl2及びPt(NH3)4Cl2から選択されることを特徴とする、請求項12〜14のいずれか一項に記載の方法。
- 酸化状態IIの前記白金化合物が、(Bipy)PtCl2及びPt(NH3)4Cl2から選択されることを特徴とする、請求項12〜15のいずれか一項に記載の方法。
- 金属イオン(複数可)の前記前駆物質の前記金属イオン(複数可)MがAg+であることを特徴とする、請求項12〜16のいずれか一項に記載の方法。
- 前記ヘテロポリアニオンが、K6P2W18O62であることを特徴とする、請求項12〜17のいずれか一項に記載の方法。
- 電子を伝導する前記材料が、チタン金属のスポンジ、又はカーボンフェルト若しくはファブリックであることを特徴とする、請求項12〜18のいずれか一項に記載の方法。
- 請求項1、2、4、5及び7のいずれか一項に記載の触媒を使用する工程を含むことを特徴とするメタンのメタノールへの転換方法。
- CH4を、請求項1及び3〜7のいずれか一項に記載の触媒と接触させる工程を含むことを特徴とするメタンのCO2への直接酸化方法。
- 請求項1及び3〜7のいずれか一項に記載の触媒、又は請求項11若しくは12に記載の電極、又は請求項12〜19のいずれか一項に記載の方法によって得られる電極を含むことを特徴とする燃料電池。
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WO2015064198A1 (ja) * | 2013-11-01 | 2015-05-07 | トヨタ自動車株式会社 | 水素酸化触媒 |
WO2016035321A1 (ja) * | 2014-09-01 | 2016-03-10 | 国立大学法人 東京大学 | 共有結合性有機構造体を含む導電性ハイブリッド材料 |
JP7551055B2 (ja) | 2020-11-27 | 2024-09-17 | 株式会社豊田中央研究所 | 炭化水素の含酸素炭化水素への変換装置、その変換装置用のアノード電極、及び、炭化水素の含酸素炭化水素への変換方法 |
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WO2013134076A1 (en) * | 2012-03-08 | 2013-09-12 | Viceroy Chemical Inc | Chain modification of gaseous methane using aqueous electrochemical activation at a three-phase interface |
CN103949263B (zh) * | 2014-04-27 | 2016-04-13 | 东北石油大学 | 用于甲烷制甲醇的钙钛矿复合氧化物催化剂及其制备方法 |
US20180118772A1 (en) * | 2016-10-31 | 2018-05-03 | Korea Institute Of Science And Technology | Catalyst for synthesizing methanol or its precursor, method for preparing the catalyst and method for producing methanol or its precursor using the catalyst |
US11668013B2 (en) * | 2019-03-15 | 2023-06-06 | Massachusetts Institute Of Technology | Controlled electrochemical oxidation of Pt(II) ions for continuous methane-to-methanol conversion |
US20240309518A1 (en) * | 2021-01-27 | 2024-09-19 | The Board Of Trustees Of The University Of Illinois | Electrochemical oxidation of methane towards methanol on mixed metal oxides |
CN115050979B (zh) * | 2022-04-26 | 2024-06-07 | 贵州大学 | 一种用于氢燃料电池器件的高性能多孔PtCu@PWOx氧还原催化剂 |
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- 2010-04-23 EP EP10723164.9A patent/EP2424660B1/fr not_active Not-in-force
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- 2010-04-23 WO PCT/FR2010/000328 patent/WO2010125252A2/fr active Application Filing
- 2010-04-23 US US13/318,037 patent/US20120088186A1/en not_active Abandoned
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JP7551055B2 (ja) | 2020-11-27 | 2024-09-17 | 株式会社豊田中央研究所 | 炭化水素の含酸素炭化水素への変換装置、その変換装置用のアノード電極、及び、炭化水素の含酸素炭化水素への変換方法 |
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FR2944716B1 (fr) | 2011-05-27 |
WO2010125252A2 (fr) | 2010-11-04 |
US20160064743A1 (en) | 2016-03-03 |
EP2424660B1 (fr) | 2014-07-16 |
FR2944716A1 (fr) | 2010-10-29 |
WO2010125252A3 (fr) | 2010-12-23 |
EP2424660A2 (fr) | 2012-03-07 |
US20120088186A1 (en) | 2012-04-12 |
JP5579256B2 (ja) | 2014-08-27 |
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