JP2015192965A - 水素燃焼触媒及びその製造方法並びに水素燃焼方法 - Google Patents
水素燃焼触媒及びその製造方法並びに水素燃焼方法 Download PDFInfo
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- JP2015192965A JP2015192965A JP2014072923A JP2014072923A JP2015192965A JP 2015192965 A JP2015192965 A JP 2015192965A JP 2014072923 A JP2014072923 A JP 2014072923A JP 2014072923 A JP2014072923 A JP 2014072923A JP 2015192965 A JP2015192965 A JP 2015192965A
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- Prior art keywords
- palladium
- hydrogen
- platinum
- catalyst
- hydrogen combustion
- 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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- 239000003054 catalyst Substances 0.000 title claims abstract description 141
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 111
- 239000001257 hydrogen Substances 0.000 title claims abstract description 111
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 238000009841 combustion method Methods 0.000 title claims 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 140
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 130
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 67
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 65
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000000460 chlorine Substances 0.000 claims abstract description 64
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 63
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011630 iodine Substances 0.000 claims abstract description 37
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 22
- 125000000524 functional group Chemical group 0.000 claims abstract description 17
- 229910052809 inorganic oxide Inorganic materials 0.000 claims abstract description 17
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 16
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 16
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- 238000006243 chemical reaction Methods 0.000 claims description 18
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Images
Classifications
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Abstract
【解決手段】本発明は、無機酸化物からなる担体に触媒金属が担持されてなる水素燃焼触媒において、前記担体表面の水酸基の末端に炭素数3以下のアルキル基を少なくとも一つ有する官能基が置換結合されており、前記触媒金属として、白金及びパラジウムが担持されており、更に、白金担持量とパラジウム担持量との合計担持量1質量%あたりの塩素含有量が300ppm〜2000ppmであることを特徴とする水素燃焼触媒である。白金とパラジウムの合計担持量は、触媒全体の質量基準で0.1〜5.0質量%とするのが好ましい。
【選択図】図1
Description
・混合ガス流量:1.6NL/min
・SV:4800h−1
・反応温度:100℃〜160℃
・試験方法:昇温速度を2℃/分とし、所定の反応温度到達後に2時間保持した後、反応ガスを分析した。
Claims (9)
- 無機酸化物からなる担体に触媒金属が担持されてなる水素燃焼触媒において、
前記担体表面の水酸基の末端に炭素数3以下のアルキル基を少なくとも一つ有する官能基が置換結合されており、
前記触媒金属として、白金及びパラジウムが担持されており、
更に、白金担持量とパラジウム担持量との合計担持量1質量%あたりの塩素含有量が300ppm〜2000ppmであることを特徴とする水素燃焼触媒。 - 担体表面の水酸基に結合する官能基は有機シランである請求項1記載の水素燃焼触媒。
- 担体を構成する無機酸化物は、アルミナ、シリカ、シリカ−アルミナ、ゼオライト、ジルコニア、チタニアのいずれかである請求項1又は請求項2に記載の水素燃焼触媒。
- 白金担持量とパラジウム担持量との合計担持量が、触媒全体の質量基準で0.1〜5.0質量%である請求項1〜請求項3のいずれかに記載の水素燃焼触媒。
- 請求項1〜請求項4のいずれかに記載の水素燃焼触媒の製造方法であって、
末端に炭素数3以下のアルキル基を有する官能基の化合物の溶液に担体となる無機酸化物を浸漬することにより、前記担体表面の水酸基に前記官能基を置換結合させる疎水化工程と、
前記疎水化工程後の担体に、白金化合物溶液及びパラジウム化合物溶液を接触させ、白金イオン及びパラジウムイオンを担持する担持工程と、
担持工程後の担体を熱処理して白金イオン及びパラジウムイオンを還元する熱処理工程とを含み、
前記担持工程における白金化合物溶液として白金の塩化物を使用し、前記パラジウム化合物溶液としてパラジウムの塩化物を使用し、
更に、前記熱処理工程は、還元性雰囲気中、150〜280℃の温度で担体を加熱するものである水素燃焼触媒の製造方法。 - 官能基を含む化合物は、シラン無機質表面改質剤である請求項5記載の水素燃焼触媒の製造方法。
- シラン無機質表面改質剤は、トリメチルメトキシシラン、トリメチルエトキシシラン、トリメチルクロロシラン、ジメチルジメトキシシラン、ジメチルジエトキシシラン、ジメチルジクロロシラン、メチルトリメトキシシラン、メチルトリエトキシシラン、メチルトリクロロシラン、トリエチルメトキシシラン、トリエチルエトキシシラン、トリエチルクロロシラン、ジエチルジメトキシシラン、ジエチルジエトキシシラン、ジエチルジクロロシラン、エチルトリメトキシシラン、エチルトリエトキシシラン、エチルトリクロロシラン、トリプロピルメトキシシラン、トリプロピルエトキシシラン、トリプロピルクロロシラン、ジプロピルジメトキシシラン、ジプロピルジエトキシシラン、ジプロピルジクロロシラン、プロピルトリメトキシシラン、プロピルトリエトキシシラン、プロピルトリクロロシランのいずれかである請求項6記載の水素燃焼触媒の製造方法。
- 熱処理工程の還元性雰囲気は、水素濃度1〜10体積%であり残部が不活性ガスの混合ガスである請求項5〜請求項7のいずれかに記載の水素燃焼触媒の製造方法。
- 請求項1〜請求項4のいずれかに記載の水素燃焼触媒に水素含有ガスを通過させ、前記水素含有ガス中の水素を燃焼させる方法であって、
前記水素含有ガスはその反応温度における飽和水蒸気量以下の水分と、0.01ppm以上のヨウ素を含むものであり、
前記反応温度を10〜500℃として水素を燃焼させる水素燃焼方法。
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CN109382042B (zh) * | 2017-08-02 | 2021-08-10 | 中国石油化工股份有限公司 | 浸渍设备及用其制备有机尾气处理催化焚烧催化剂的方法 |
CN109382145B (zh) * | 2017-08-02 | 2021-10-22 | 中国石油化工股份有限公司 | 催化剂浸渍设备及其应用方法 |
CN116351468B (zh) * | 2023-02-28 | 2024-04-19 | 中国工程物理研究院材料研究所 | 一种疏水分子筛负载铂催化剂的制备及其应用 |
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