JP7452759B2 - 水素化反応用触媒及びその製造方法 - Google Patents
水素化反応用触媒及びその製造方法 Download PDFInfo
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- JP7452759B2 JP7452759B2 JP2023513241A JP2023513241A JP7452759B2 JP 7452759 B2 JP7452759 B2 JP 7452759B2 JP 2023513241 A JP2023513241 A JP 2023513241A JP 2023513241 A JP2023513241 A JP 2023513241A JP 7452759 B2 JP7452759 B2 JP 7452759B2
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- C07C5/08—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds
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- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
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Description
多孔性担体;
上記多孔性担体に担持された触媒成分;及び
上記多孔性担体及び触媒成分の表面の少なくとも一部分に備えられ、下記化学式1で表される繰り返し単位を含む高分子
を含む水素化反応用触媒を提供する。
[化学式1]
R1及びR2は、互いに同一であるか異なっており、それぞれ独立して、水素、炭素数1~10のアルキル基、又は炭素数6~20のアリール基であるか、互いに隣接した基は、互いに結合して炭化水素環を形成することができ、
m及びnは、それぞれ独立して、0~4の整数である。
多孔性担体に触媒成分を担持させるステップ;
上記触媒成分が担持された多孔性担体に上記化学式1で表される繰り返し単位を含む高分子を担持させるステップ
を含む水素化反応用触媒の製造方法を提供する。
[化学式1]
R1及びR2は、互いに同一であるか異なっており、それぞれ独立して、水素、炭素数1~10のアルキル基、又は炭素数6~20のアリール基であるか、互いに隣接した基は、互いに結合して炭化水素環を形成することができ、
m及びnは、それぞれ独立して、0~4の整数である。
<合成例1> 上記化学式2で表される繰り返し単位を含む高分子の合成
16.8gの硫化ナトリウム水和物(sodium sulfide hydrate、61.3重量%のNa2S)、70gのn-メチル-2-ピロリドン(n-methyl-2-pyrrolidone, NMP)を混合した後、473Kに加熱して脱水した後、上記混合物を373Kに冷却した。上記混合物に7.35gのm-ジクロロベンゼン(m-dichlorobenzene)、7.35gのp-ジクロロベンゼン(p-dichlorobenzene)と15gのNMPが混合された溶液を注入し、アルゴンガスを用いて圧力を6barまで高めた後、503Kで24時間撹拌して高分子を重合した。
16.8gの硫化ナトリウム水和物(sodium sulfide hydrate、61.3重量%のNa2S)、70gのn-メチル-2-ピロリドン(n-methyl-2-pyrrolidone, NMP)を混合した後、473Kに加熱して脱水した後、上記混合物を373Kに冷却した。上記混合物に8.05gの2,4-ジクロロトルエン(2,4-dichlorotoluene)、7.35gのp-ジクロロベンゼン(p-dichlorobenzene)と15gのNMPが混合された溶液を注入し、アルゴンガスを用いて圧力を6barまで高めた後、503Kで24時間撹拌して高分子を重合した。
16.8gの硫化ナトリウム水和物(sodium sulfide hydrate、61.3重量%のNa2S)、70gのn-メチル-2-ピロリドン(n-methyl-2-pyrrolidone, NMP)を混合した後、473Kに加熱して脱水した後、上記混合物を373Kに冷却した。上記混合物に7.5gのm-ジクロロベンゼン(m-dichlorobenzene)、8.05gの2,5-ジクロロトルエン(2,5-dichlorotoluene)と15gのNMPが混合された溶液を注入し、アルゴンガスを用いて圧力を6barまで高めた後、503Kで24時間撹拌して高分子を重合した。
16.8gの硫化ナトリウム水和物(sodium sulfide hydrate、61.3重量%のNa2S)、70gのn-メチル-2-ピロリドン(n-methyl-2-pyrrolidone, NMP)を混合した後、473Kに加熱して脱水した後、上記混合物を373Kに冷却した。上記混合物に11.2gの3,5-ジクロロ-1,1'-ビフェニル(3,5-dichloro-1,1'-biphenyl)、7.35gのp-ジクロロベンゼン(p-dichlorobenzene)と15gのNMPが混合された溶液を注入し、アルゴンガスを用いて圧力を6barまで高めた後、503Kで24時間撹拌して高分子を重合した。
上記合成例1~4で製造した高分子の構成成分を確認するために、元素分析法(elemental analysis)と13C NMR分析を実施した後、その結果をそれぞれ表1及び表2に示した。
0.28gのPd(NH3)4(NO3)2水溶液 (10重量%)を1gの蒸留水に混合した後、10gのα-Al2O3(Alfa-aesar)に水分含浸法で担持した後、333Kで12時間乾燥した。乾燥後、当該サンプルを673Kの空気条件で2時間焼成し、その後673Kの水素条件で還元処理した。上記製造された触媒は、「Pd/α-Al2O3」と表した。
上記合成例1で製造した0.03gのm, p-PPSを10gのTHFに混合した溶液を上記比較例1の10gのPd/α-Al2O3に担持して、常温で12時間乾燥した。乾燥後、当該サンプルを373Kで水素条件で2時間還元処理した。上記製造された触媒は、 「0.30PPS/Pd/α-Al2O3」と表した(「0.30」は、製造された触媒中のm, p-PPSの重量%を意味する)。
上記合成例1で製造した0.1gのm, p-PPSを10gのTHFに混合した溶液を上記比較例1の10gのPd/α-Al2O3に担持して、常温で12時間乾燥した。乾燥後、当該サンプルを373Kで水素条件で2時間還元処理した。上記製造された触媒は、 「1.0PPS/Pd/α-Al2O3」と表した(「1.0」は、製造された触媒中のm, p-PPSの重量%を意味する)。
上記合成例2で製造した0.03gのm(t), p-PPSを10gのTHFに混合した溶液を上記比較例1の10gのPd/α-Al2O3に担持して、常温で12時間乾燥した。乾燥後、当該サンプルを373Kで水素条件で2時間還元処理した。上記製造された触媒は、「0.30m(t), p-PPS/Pd/α-Al2O3」と表した(「0.30」は、製造された触媒中のm(t), p-PPSの重量%を意味する)。
上記合成例3で製造した0.03gのm, p(t)-PPSを10gのTHFに混合した溶液を上記比較例1の10gのPd/α-Al2O3に担持して、常温で12時間乾燥した。乾燥後、当該サンプルを373Kで水素条件で2時間還元処理した。上記製造された触媒は、「0.30m, p(t)-PPS/Pd/α-Al2O3」と表した(「0.30」は、製造された触媒中のm, p(t)-PPSの重量%を意味する)。
上記合成例4で製造した0.03gのm(bp), p-PPSを10gのTHFに混合した溶液を上記比較例1の10gのPd/α-Al2O3に担持して、常温で12時間乾燥した。乾燥後、当該サンプルを373Kで水素条件で2時間還元処理した。上記製造された触媒は、「0.30m(bp), p-PPS/Pd/α-Al2O3」と表した(「0.30」は、製造された触媒中の m(bp), p-PPSの重量%を意味する)。
実施例1及び比較例1で合成された触媒の活性金属の状態を確認するために、透過電子顕微鏡(Transmission Electron Microscope, TEM)分析を実施し、その結果を下記図6に示した。
上記実施例及び比較例で製造された担持触媒の活性及び選択度は、下記の方法で確認した。
[数1]
転換率(%)=(反応したアセチレンのモル数)/(供給されたアセチレンのモル数)×100
[数2]
選択度(%)=(生成された生成物のモル数)/(反応したアセチレンのモル数)×100
実施例1及び比較例1で製造された触媒の活性金属の触媒の長期安定性を下記の方法で確認した。
1)元素分析法(elemental analysis)
使用装備:FLASH 2000(Thermo Scientific)
2)交差分極-マジック角回転13C核磁気共鳴(cross polarization magic-angle spinning 13C nuclear magnetic resonance, CP/MAS 13C NMR)
使用装備:AVANCE III HD (400 MHz) with wide bore 9.4 T magnet (Bruker)
分析方法:100.65 MHz, repetition delay time of 3 seconds. Chemical shifts were reported in ppm relative to tetramethyl silane (0 ppm).
3)X線回折分光器(X-ray diffractomer, XRD)
使用装備:D2-Phaser (Bruker)
4)熱重量分析器(Thermogravimetric analysis, TGA)
使用装備:N-1000 (Scinco)
分析方法:Heガスで5K min-1の昇温条件で測定
5)透過電子顕微鏡 (transmission electron microscope, TEM)
使用装備:Titan Cubed G2 60 300 (FEI) at 200 kV
6)水素化学吸着(hydrogen chemisorption)
使用装備:ASAP2020 (Micromeritics)
7)ガスクロマトグラフィー(gas chromatography, GC)
使用装備:YL6500 (Younglin)
分析方法:on-line GC equipped with FID (flame ionized detector), GS-GasPro (Agilent)columnを利用
Claims (9)
- 前記多孔性担体は、シリカ、アルミナ、マグネシア、シリカ-アルミナ、シリカ-マグネシア及びアルミナ-マグネシアのうちの1種以上を含むものである、請求項1に記載の水素化反応用触媒。
- 前記触媒成分は、白金、パラジウム、ルテニウム、鉄、ニッケル、コバルト、モリブデン、金、銀、銅、チタン、ガリウム、セリウム、アルミニウム、亜鉛及びランタンのうちの1種以上を含むものである、請求項1に記載の水素化反応用触媒。
- 前記水素化反応用触媒の総重量を基準に、前記触媒成分の含量は、0.01重量%~10重量%である、請求項1に記載の水素化反応用触媒。
- 前記水素化反応用触媒の総重量を基準に、前記高分子の含量は、0.01重量% ~5重量%である、請求項1に記載の水素化反応用触媒。
- 前記水素化反応用触媒は、アルキンからアルケンへの水素化反応用触媒である、請求項1から6のいずれか一項に記載の水素化反応用触媒。
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