JP2013035698A - 二酸化炭素還元方法 - Google Patents
二酸化炭素還元方法 Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 77
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000011941 photocatalyst Substances 0.000 claims abstract description 54
- 239000010941 cobalt Substances 0.000 claims abstract description 23
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 23
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000010936 titanium Substances 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000013078 crystal Substances 0.000 claims abstract description 14
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 14
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 63
- 239000000758 substrate Substances 0.000 claims description 22
- 239000010453 quartz Substances 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229910001429 cobalt ion Inorganic materials 0.000 claims description 5
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 claims description 5
- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims 1
- 238000006722 reduction reaction Methods 0.000 description 27
- 239000011521 glass Substances 0.000 description 25
- 239000004408 titanium dioxide Substances 0.000 description 24
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 21
- 229910002091 carbon monoxide Inorganic materials 0.000 description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 11
- 239000000843 powder Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 229910016036 BaF 2 Inorganic materials 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 6
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical group [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 6
- 229910000348 titanium sulfate Inorganic materials 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical group [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 3
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007540 photo-reduction reaction Methods 0.000 description 3
- 150000003608 titanium Chemical class 0.000 description 3
- -1 titanium ions Chemical class 0.000 description 3
- 241000627951 Osteobrama cotio Species 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000001868 cobalt Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000013032 photocatalytic reaction Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910021446 cobalt carbonate Inorganic materials 0.000 description 1
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 description 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
【解決手段】ステップS101で、チタン,コバルト,および酸素からなるアナターゼ型の結晶構造を有した金属酸化物からなる光触媒に二酸化炭素を接触させる。次に、ステップS102で、上記光触媒に光を照射する。これらのことにより、光が照射されている光触媒に接触する二酸化炭素を還元する。なお、光触媒に光を照射している状態で、光触媒に二酸化炭素を接触させるようにしてもよい。
【選択図】図1
Description
はじめに、本発明の実施の形態1について図1を用いて説明する。図1は、本発明の実施の形態1における二酸化炭素還元方法を説明するためのフローチャートである。
次に、本発明の実施の形態2について図2を用いて説明する。図2は、本発明の実施の形態2における二酸化炭素還元方法を説明するためのフローチャートである。
次に、実施例1について説明する。はじめに、光触媒の作製について説明する。まず、硫酸チタンと塩化コバルトとを混合した水溶液を用意する。硫酸チタンと塩化コバルトとは、モル比が95:5となる量を混合する。この水溶液にアンモニア水を加える。アンモニアは、硫酸チタンおよび塩化コバルトの和に対して30倍のモル数となる量を加える。このようにして作製した水溶液Aを70℃に加熱し、この温度を維持して3時間混合を継続する。この過程で徐々に沈殿が形成される。
次に、比較例1について説明する。比較例では、二酸化チタンを用いる。まず、市販されているアナターゼ型の二酸化チタンを用意する。用意した二酸化チタンの粉体をエタノールに分散し、この分散液に石英ろ紙を浸漬し、二酸化チタンの粉体を石英ろ紙上に固定する。この後、乾燥窒素中で乾燥させる。以上のことにより二酸化チタン固定基板が得られる。
次に、比較例2について説明する。比較例2では、二酸化チタンの粉体を石英ガラスからなる基板に固定(付着)させた二酸化チタン固定基板を用いる。他の構成および光照射については、前述した比較例1と同様である。
Claims (5)
- チタン,コバルト,および酸素からなるアナターゼ型の結晶構造を有した金属酸化物からなる光触媒に二酸化炭素を接触させる接触工程と、
前記光触媒に光を照射する照射工程と
を少なくとも備え、
光が照射されている前記光触媒に接触する二酸化炭素を還元することを特徴とする二酸化炭素還元方法。 - 請求項1記載の二酸化炭素還元方法において、
前記光触媒を基体に固定する固定工程を備え、
前記接触工程では、前記基体に固定された前記光触媒に二酸化炭素を接触させ、
前記照射工程では、前記基体に固定された前記光触媒に光を照射することを特徴とする二酸化炭素還元方法。 - 請求項2記載の二酸化炭素還元方法において、
前記基体は、石英ろ紙であることを特徴とする二酸化炭素還元方法。 - 請求項1〜3のいずれか1項の二酸化炭素還元方法において、
前記接触工程および前記照射工程は、水分および二酸化炭素のみの反応雰囲気で行うことを特徴とする二酸化炭素還元方法。 - 請求項1〜4のいずれか1項に記載の二酸化炭素還元方法において、
前記光触媒は、コバルトイオンおよびチタンイオンを含む水溶液よりコバルトおよびチタンを含む水酸化物を沈殿させ、沈殿させた前記水酸化物より作製されたものであることを特徴とする二酸化炭素還元方法。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016074577A (ja) * | 2014-10-09 | 2016-05-12 | 日本電信電話株式会社 | 二酸化炭素の還元方法 |
CN107497441A (zh) * | 2017-08-24 | 2017-12-22 | 广西秀美壮乡能源环保有限公司 | 一种二氧化碳甲烷化催化剂及其应用 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63225532A (ja) * | 1987-03-13 | 1988-09-20 | Seiko Epson Corp | 酸化チタン微粒子及び光学部材 |
JP2002126517A (ja) * | 2000-10-20 | 2002-05-08 | Sumitomo Chem Co Ltd | 光触媒体、その製造方法およびそれを用いてなる光触媒体コーティング剤 |
JP2005138008A (ja) * | 2003-11-05 | 2005-06-02 | National Institute For Materials Science | 可視光応答型酸化チタン複合系光触媒およびその製造法 |
JP2009275033A (ja) * | 2009-03-04 | 2009-11-26 | Ichiro Moriya | 二酸化炭素の還元方法および還元力供与システム |
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- 2011-08-04 JP JP2011170726A patent/JP5647080B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63225532A (ja) * | 1987-03-13 | 1988-09-20 | Seiko Epson Corp | 酸化チタン微粒子及び光学部材 |
JP2002126517A (ja) * | 2000-10-20 | 2002-05-08 | Sumitomo Chem Co Ltd | 光触媒体、その製造方法およびそれを用いてなる光触媒体コーティング剤 |
JP2005138008A (ja) * | 2003-11-05 | 2005-06-02 | National Institute For Materials Science | 可視光応答型酸化チタン複合系光触媒およびその製造法 |
JP2009275033A (ja) * | 2009-03-04 | 2009-11-26 | Ichiro Moriya | 二酸化炭素の還元方法および還元力供与システム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016074577A (ja) * | 2014-10-09 | 2016-05-12 | 日本電信電話株式会社 | 二酸化炭素の還元方法 |
CN107497441A (zh) * | 2017-08-24 | 2017-12-22 | 广西秀美壮乡能源环保有限公司 | 一种二氧化碳甲烷化催化剂及其应用 |
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