JP6823183B2 - 炭化水素予備改質用構造化触媒 - Google Patents
炭化水素予備改質用構造化触媒 Download PDFInfo
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- JP6823183B2 JP6823183B2 JP2019538469A JP2019538469A JP6823183B2 JP 6823183 B2 JP6823183 B2 JP 6823183B2 JP 2019538469 A JP2019538469 A JP 2019538469A JP 2019538469 A JP2019538469 A JP 2019538469A JP 6823183 B2 JP6823183 B2 JP 6823183B2
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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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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Description
第2のコーティングは、ルテニウムをさらに含有することができる。第2のコーティングは、ニッケル−ルテニウム系触媒をさらに含有することができる。触媒コーティングは、ニッケル成分、酸化セリウム成分、および酸化ガドリニウム成分を含むことができる。ある実施形態において、触媒コーティングは、ルテニウム成分、酸化セリウム成分、および酸化ガドリニウム成分を含むことができる。ある実施形態において、触媒コーティングは、ニッケル成分、ルテニウム成分、酸化セリウム成分、および酸化ガドリニウム成分を含むことができる。構造化触媒は、2層以上の第1のコーティングを含有することができる。構造化触媒は、少なくとも5層の第1のコーティングを含有することができる。構造化触媒は、2層以上の第2のコーティングを含有することができる。構造化触媒は、少なくとも5層の第2のコーティングを含有することができる。
転化率=(CO+CO2+CH4のモル基準生成量)/(原燃料入力中の全炭素)
を用いて算出される。
ただし、原燃料供給ポンプおよびガスクロマトグラフィー測定の誤差により、転化率は変動し得る。転化率の結果は、長期安定性の基準として使用することができる。
Claims (18)
- 炭化水素予備改質用構造化触媒を製造するための方法であって、
第1のコーティングモノリス構造化触媒基体を形成するために、セリウム―ガドリニウム酸化物粉末および第1の結合剤を含有する第1のコーティング溶液を用いて、第1のコーティングを前記モノリス構造化触媒基体の表面に塗布するステップと、
第1のか焼構造化触媒基体を形成するために、前記第1のコーティング構造化触媒基体をか焼するステップと、
第2のコーティングモノリス構造化触媒基体を形成するために、第2の結合剤ならびにニッケルおよびセリウム―ガドリニウム酸化物を含有する第2のコーティング溶液を用いて、第2のコーティングを前記第1のか焼モノリス構造化触媒基体の表面に塗布するステップと、
第2のか焼モノリス構造化触媒基体を形成するために、前記第2のコーティングモノリス構造化触媒基体をか焼するステップと、
構造化触媒を形成するために、水素の存在下において加熱することにより、前記第2のか焼構造化触媒基体を活性化するステップと
を備える、前記構造化触媒を製造するための方法。 - 前記第1の結合剤が第1の高分子材料を含み、前記第2の結合剤が第2の高分子材料を含む、請求項1に記載の方法。
- 前記第1の結合剤および前記第2の結合剤が、ポリビニルブチラール樹脂を含有する、請求項1または2に記載の方法。
- 前記第1のコーティングを塗布する前に、前記モノリス構造化触媒基体の表面を清浄化するステップ
をさらに備える、請求項1から3のいずれか一項に記載の方法。
- 前記モノリス構造化触媒基体の前記表面を前記清浄化するステップが、
30%硝酸溶液を用いて前記モノリス構造化触媒基体を洗浄するステップと、
120℃において少なくとも1時間にわたり前記モノリス構造化触媒基体を乾燥させるステップと
をさらに備える、請求項4に記載の方法。 - 前記第1のコーティングを前記モノリス構造化触媒基体の表面に前記塗布するステップが、
前記モノリス構造化触媒基体を前記第1のコーティング溶液に接触させるステップと、
前記モノリス構造化触媒基体上に前記第1のコーティング溶液の膜を提供するために、過剰量の前記第1のコーティング溶液を除去するステップと、
前記モノリス構造化触媒基体上の前記膜を乾燥させるステップと
をさらに備える、請求項1から5のいずれか一項に記載の方法。 - 前記接触させるステップ、前記除去するステップ、および前記乾燥させるステップを少なくとも5回順次に繰り返して、前記モノリス構造化触媒基体上に前記第1のコーティングを形成する、請求項6に記載の方法。
- 前記第2のコーティングを前記第1のか焼モノリス構造化触媒基体の表面に前記塗布するステップが、
前記第1のコーティングモノリス構造化触媒基体を前記第2のコーティング溶液に接触させるステップと、
前記第1のコーティングモノリス構造化触媒基体上に前記第2のコーティング溶液の膜を提供するために、過剰量の前記第2のコーティング溶液を除去するステップと、
前記第1のコーティングモノリス構造化触媒基体上の前記膜を乾燥させるステップと
をさらに備える、請求項1に記載の方法。 - 前記接触させるステップ、前記除去するステップ、および前記乾燥させるステップを少なくとも5回順次に繰り返して、前記第1のコーティングモノリス構造化触媒基体上に前記第2のコーティングを形成する、請求項8に記載の方法。
- 前記第1のコーティング溶液が、溶媒、分散剤、および可塑剤をさらに含有する、請求項1に記載の方法。
- 前記第2のコーティング溶液が、溶媒、分散剤、および可塑剤をさらに含有する、請求項1に記載の方法。
- 前記第2のか焼モノリス構造化触媒基体を活性化するステップが、
500℃の温度において少なくとも4時間にわたり水素30%および窒素70%の雰囲気中で、前記第2のか焼モノリス構造化触媒基体を加熱するステップ
をさらに備える、請求項1に記載の方法。 - モノリス構造化触媒基体と、
セリウム―ガドリニウム酸化物を含有し、かつ前記モノリス構造化触媒基体の表面に塗布された第1のコーティングと、
ニッケルおよびセリウム―ガドリニウム酸化物を含有し、かつ前記第1のコーティングに塗布された第2のコーティングと、
を備える炭化水素予備改質用構造化触媒。 - 前記第2のコーティングが、ルテニウムをさらに含有する、請求項13に記載の構造化触媒。
- 前記構造化触媒が、2層以上の前記第2のコーティングを含有する、請求項13または14に記載の構造化触媒。
- 接触予備改質器に、空気と、水蒸気と、C2以上の炭化水素を含む炭化水素原燃料とを供給するステップと、
水素およびメタンを含む改質ガス出口流れを生成するために、前記接触予備改質器内において、前記炭化水素原燃料を予備改質するステップであって、前記接触予備改質器は、モノリス構造化触媒基体と、前記構造化触媒基体の前記表面にセリウム―ガドリニウム酸化物を含有する第1のコーティングと、前記第1のコーティング上に位置しニッケルおよびセリウム―ガドリニウム酸化物を含有する第2のコーティングと、を有する構造化触媒を含む、前記予備改質するステップと
を備える、炭化水素原燃料を予備改質するための方法。 - 前記炭化水素原燃料が、天然ガス、プロパン、ガソリン、ジェット燃料、バイオ燃料、ディーゼル燃料、および灯油からなる群から選択される、請求項16に記載の方法。
- 炭化水素原燃料源を水素およびメタンを含むガス流に予備改質するための構造化触媒を含有する予備改質器であって、前記構造化触媒は、モノリス構造化触媒基体と、前記構造化触媒基体の前記表面に位置しセリウム―ガドリニウム酸化物を含有する第1のコーティングと、前記第1のコーティング上に位置しニッケルおよびセリウム―ガドリニウム酸化物を含有する第2のコーティングと、を有する、前記予備改質器と、
前記ガス流を受け入れるために、前記構造化触媒を含有する予備改質器と流体連通している固体酸化物形燃料電池と、
を備える、固体酸化物形燃料電池装置。
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