JP5057671B2 - 調湿用炭素材およびその製造方法 - Google Patents
調湿用炭素材およびその製造方法 Download PDFInfo
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- JP5057671B2 JP5057671B2 JP2006029586A JP2006029586A JP5057671B2 JP 5057671 B2 JP5057671 B2 JP 5057671B2 JP 2006029586 A JP2006029586 A JP 2006029586A JP 2006029586 A JP2006029586 A JP 2006029586A JP 5057671 B2 JP5057671 B2 JP 5057671B2
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Description
本発明の調湿用炭素材における調湿能力は、高湿度における水蒸気吸着量と低湿度における水蒸気吸着量の差として評価することができ、この差が大きいものが高性能ということができる。調湿材の調湿能力は一般的に、湿度90%時と湿度55%時の吸水率の差によって評価することができる。吸水率は、具体的には、25℃における調湿用炭素材の単位容量当たりの水蒸気吸着後の増加した調湿炭素材の質量の割合を示す値である。
[実施例1]
石油系重質油の流動接触分解装置のボトム油及び減圧蒸留装置の残渣油を混合し、オートクレーブで0.2Mpa、450℃でコーキングし、石油コークスを得た。
[気孔率]
3.5〜4メッシュの試料約30gを用いて水置換法によってピクノメーターにより求めた見かけ比重ADと、200メッシュ以下の試料約10gを用いてn−ブチルアルコール置換法によってピクノメーターにより求めた真比重RDとから、次式によって算出した。
[揮発分含有量]
試料中の揮発成分は、JIS M8812に準拠した方法により求めた。
[全水素含有量]
試料を750℃の酸素気流中で完全燃焼させ、燃焼ガス中の水分量を電量適定法(カール・フィッシャー法)により測定し、水分量からこれに含まれる水素量を算出した。
[嵩比重]
試料100gを4回/秒で500回振動を与えながらシリンダーに落下させ、シリンダー中の容量aを測定し、100g/amlを求め、3回の平均値として求めた。
[吸水率]
25℃、湿度90%と湿度55%時のそれぞれについて、調湿用炭素材の単位重量当たりの水蒸気吸着後の調湿炭素材の質量の増加割合を求め、これに嵩比重(BD)を乗じて調湿用炭素材の単位容量当たりの水蒸気吸着率を求めた。
[調湿能力]
25℃、湿度90%時の調湿用炭素材の単位容量当たりの水蒸気吸着率から 25℃、湿度55%時の調湿用炭素材の単位容量当たりの水蒸気吸着率を減じて求めた。
[実施例2、3]
乾留温度を表1に示す温度とした他は、実施例1と同様にして調湿材用炭素材を得て、得られた調湿材用炭素材の気孔率、揮発分含有量(VM)、全水素含有量(TH)、カサ比重(BD)、吸水率について、実施例1と同様に測定し、調湿能力を求めた。結果を表1に示す。
[比較例1〜5]
石油コークスそのもの(比較例1)、乾留温度を550℃、820℃、1200℃とした他は実施例1と同様に行ったもの(比較例2〜4)、調湿材用木炭(比較例5)の気孔率、揮発分含有量(VM)、全水素含有量(TH)、カサ比重(BD)、吸水率について、実施例1と同様に測定し、調湿能力を求めた。結果を表1に示す。
Claims (4)
- ディレードコーキングから得られる石油コークスを650〜800℃の温度で乾留して得られる調湿材用炭素材であって、気孔を20容量%以上、30容量%以下の範囲とすることを特徴とする調湿材用炭素材。
- 水素を1.0〜3.0質量%含有することを特徴とする請求項1記載の調湿材用炭素材。
- 揮発分を1.0〜5.0質量%含有することを特徴とする請求項1または2記載の調湿材用炭素材。
- ディレードコーキングから得られる石油コークスを650〜800℃の温度で乾留し、気孔を20容量%以上、30容量%以下の範囲とすることを特徴とする調湿材用炭素材の製造方法。
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JP2006029586A JP5057671B2 (ja) | 2006-02-07 | 2006-02-07 | 調湿用炭素材およびその製造方法 |
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JP2006029586A JP5057671B2 (ja) | 2006-02-07 | 2006-02-07 | 調湿用炭素材およびその製造方法 |
Publications (2)
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JP2007209844A JP2007209844A (ja) | 2007-08-23 |
JP5057671B2 true JP5057671B2 (ja) | 2012-10-24 |
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JP2006029586A Expired - Fee Related JP5057671B2 (ja) | 2006-02-07 | 2006-02-07 | 調湿用炭素材およびその製造方法 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5695147B2 (ja) | 2013-09-06 | 2015-04-01 | 東洋炭素株式会社 | 多孔質炭素、調湿吸着材、吸着式ヒートポンプ、及び燃料電池 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06144816A (ja) * | 1992-10-30 | 1994-05-24 | Osaka Gas Co Ltd | 活性炭の製造方法 |
JPH06144817A (ja) * | 1992-10-30 | 1994-05-24 | Osaka Gas Co Ltd | 活性炭の製造方法 |
JP3619504B2 (ja) * | 2002-06-20 | 2005-02-09 | 大阪瓦斯株式会社 | 活性炭の製造方法 |
JP3663489B2 (ja) * | 2002-06-20 | 2005-06-22 | 大阪瓦斯株式会社 | 活性炭の製造方法 |
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