JP2933798B2 - Method for producing ultrafine carbon particles by decomposition of hydrocarbon using photosensitization reaction - Google Patents
Method for producing ultrafine carbon particles by decomposition of hydrocarbon using photosensitization reactionInfo
- Publication number
- JP2933798B2 JP2933798B2 JP5087385A JP8738593A JP2933798B2 JP 2933798 B2 JP2933798 B2 JP 2933798B2 JP 5087385 A JP5087385 A JP 5087385A JP 8738593 A JP8738593 A JP 8738593A JP 2933798 B2 JP2933798 B2 JP 2933798B2
- Authority
- JP
- Japan
- Prior art keywords
- decomposition
- photosensitizer
- gas
- carbon particles
- hydrocarbon
- 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.)
- Expired - Fee Related
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 25
- 229910052799 carbon Inorganic materials 0.000 title claims description 24
- 229930195733 hydrocarbon Natural products 0.000 title claims description 10
- 238000000354 decomposition reaction Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title description 18
- 239000002245 particle Substances 0.000 title description 14
- 238000006243 chemical reaction Methods 0.000 title description 8
- 239000004215 Carbon black (E152) Substances 0.000 title description 5
- 208000017983 photosensitivity disease Diseases 0.000 title description 4
- 231100000434 photosensitization Toxicity 0.000 title description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 title 1
- 239000007789 gas Substances 0.000 claims description 19
- 239000003504 photosensitizing agent Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 239000012159 carrier gas Substances 0.000 claims description 10
- 150000002430 hydrocarbons Chemical group 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000011882 ultra-fine particle Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000005281 excited state Effects 0.000 description 3
- ICLZNGAELWYHKL-CAPFRKAQSA-N (E)-3-[5-[5-[4-(N-phenylanilino)phenyl]thiophen-2-yl]thiophen-2-yl]prop-2-enoic acid Chemical compound OC(=O)\C=C\c1ccc(s1)-c1ccc(s1)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 ICLZNGAELWYHKL-CAPFRKAQSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000004949 mass spectrometry Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002165 photosensitisation Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
Description
【０００１】[0001]
【産業上の利用分野】本発明は超微粒子製造、超伝導材
製造、ウラン濃縮、セラミックス製造、難分解物質の処
理等の分野に利用することができる光増感反応を利用し
た炭化水素の分解による炭素超微粒子製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the decomposition of hydrocarbons using a photosensitization reaction which can be used in fields such as ultrafine particle production, superconducting material production, uranium enrichment, ceramics production and treatment of hardly decomposable substances. And a method for producing ultrafine carbon particles using the method described above.
【０００２】[0002]
【従来の技術】従来、複数個の原子、分子が凝集した炭
素超微粒子の製造方法としては、 気密性反応容器内に原料物質を封じ、容器を加熱して
一定時間反応させ、製造する方法（特開平４ー３４２４
０６号公報）。2. Description of the Related Art Conventionally, as a method for producing ultra-fine carbon particles in which a plurality of atoms and molecules are aggregated, a method of sealing a raw material in an airtight reaction vessel, heating the vessel, and reacting for a predetermined time ( JP-A-4-3424
06 publication).
【０００３】容器内で黒鉛等の炭素棒を電極とし、ア
ーク放電させて製造する方法（日本質量分析学会出版
「質量分析」Ｖｏｌ４０，Ｎｏ４，ｐｐ２０３〜２１
５、１９９２）。A method in which a carbon rod such as graphite is used as an electrode in a container and arc discharge is carried out (“Mass Spectroscopy”, Vol. 40, No. 4, pp. 203-21, published by the Japan Society for Mass Spectrometry).
5, 1992).
【０００４】炭素棒等にレーザ光を照射し、蒸発によ
り製造する方法（特開平５ー２５６１４号公報）。A method of irradiating a carbon rod or the like with a laser beam and evaporating the carbon rod (Japanese Patent Laid-Open No. 5-25614).
【０００５】が、主として行われていた。However, it has been mainly performed.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記
の製造方法においては、反応の開始および停止に時間を
要し、人間の手で操作可能な温度に下がるまで待たなけ
ればならないなど時間がかかってしまう。また、、
の製造方法においては、火花、あるいはレーザ光により
炭素棒表面が削られるため、製造条件が不均一となり、
また、炭素棒毎のバッチ処理であるため量産に向かず、
経済性が低い等の問題があった。However, in the above-described production method, it takes time to start and stop the reaction, and it takes a long time to wait for the temperature to be lowered to a level that can be operated by a human hand. . Also,,
In the method of manufacturing, since the carbon rod surface is shaved by sparks or laser light, the manufacturing conditions become non-uniform,
Also, because it is a batch process for each carbon rod, it is not suitable for mass production,
There were problems such as low economic efficiency.
【０００７】本発明は上記課題を解決するためのもの
で、均一かつ安定した条件で製造でき、さらに高純度で
粉体物性を容易に制御することができ、連続的に量産
し、製造コストを下げることができる光増感反応を利用
した炭化水素の分解による炭素超微粒子製造方法を提供
することを目的とする。The present invention has been made to solve the above-mentioned problems, and can be manufactured under uniform and stable conditions. Further, the physical properties of the powder can be easily controlled with high purity. It is an object of the present invention to provide a method for producing ultrafine carbon particles by decomposing a hydrocarbon using a photosensitization reaction that can be reduced.
【０００８】本発明の光増感反応を利用した炭化水素の
分解による炭素超微粒子の製造方法は、原料ガス、特定
の波長のレーザ光を選択的に吸収する光増感物質、及び
キャリアガスを連続的に混合する段階、混合したガスを
照射容器に導入し、前記特定の波長のレーザ光を照射し
て光増感物質を励起し、励起した光増感物質と原料物質
との衝突によるエネルギー移動を利用して原料物質を分
解する段階、分解により生成した炭素超微粒子を回収す
る段階からなることを特徴とする。According to the method of the present invention for producing ultrafine carbon particles by decomposing a hydrocarbon utilizing a photosensitization reaction, a method for producing a raw material gas, a photosensitizer capable of selectively absorbing laser light having a specific wavelength, and a carrier gas are provided. Continuously mixing, introducing the mixed gas into the irradiation vessel, irradiating the laser light of the specific wavelength to excite the photosensitizer, and energy due to collision between the excited photosensitizer and the raw material. The method is characterized in that it comprises a step of decomposing a raw material using transfer, and a step of collecting ultrafine carbon particles generated by the decomposition.
【０００９】[0009]
【作用】本発明は、特定の波長を吸収する媒質にレーザ
光を吸収させ、その光増感作用を利用して炭化水素の原
料物質を分解することにより、制御性良く高純度の炭素
超微粒子を連続的に製造し、量産化、製造コストの逓減
化を計ることを可能としたものである。図１は本発明の
製造方法を実施するための構成を示すブロック図であ
る。図中、１は原料ガス、２は光増感物質、３はキャリ
アガス、４はガス混合器、５は照射容器、６はレーザー
装置、７は製品捕集器、８は製品回収器、９は真空ポン
プである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a highly controllable high-purity ultrafine carbon particle by absorbing a laser beam into a medium absorbing a specific wavelength and decomposing a hydrocarbon material using the photosensitizing effect. Are manufactured continuously, and mass production and a reduction in manufacturing cost can be achieved. FIG. 1 is a block diagram showing a configuration for implementing the manufacturing method of the present invention. In the figure, 1 is a source gas, 2 is a photosensitizer, 3 is a carrier gas, 4 is a gas mixer, 5 is an irradiation container, 6 is a laser device, 7 is a product collector, 8 is a product collector, 9 Is a vacuum pump.
【００１０】原料ガス１は気体状炭化水素、メタン、エ
タン、アセチレン、プロピレン等からなり、これと六フ
ッ化イオウ（ＳＦ6 ）等からなる光増感物質２、アルゴ
ン、窒素等のキャリアガス３をそれぞれ所定の圧力、流
量に調整した後、金属製またはガラス製真空容器からな
るガス混合器４に配管を通して送られる。ガス混合器４
は、例えば、商品名「スケアミキサー」（株式会社櫻製
作所）として市販されているものでよく、図２に示すよ
うに、パイプ状ハウジング１０内に分割板１１と変位板
１２を組み合わせたものを１つのエレメントとし、各エ
レメントを直角に交叉させて長手方向に配列し、図の矢
印で示すように、ハウジング内に入った流体は分割板１
１で分割されるとともに、変位板１２で置換され、次の
エレメントで再分割、置換が繰り返し行われ、原料ガス
１、光増感物質２、キャリアガス３は連続的に混合され
る。ガス混合器４で混合された混合ガスはキャピラリー
を通して照射容器５に導入され、例えば、炭酸ガスレー
ザーからなるレーザー装置６から発振された光増感物質
に同調する波長のレーザービームで照射される。The raw material gas 1 is composed of gaseous hydrocarbons, methane, ethane, acetylene, propylene and the like, and a photosensitizer 2 composed of sulfur hexafluoride (SF 6 ) and the like, and a carrier gas 3 such as argon and nitrogen. Are adjusted to predetermined pressures and flow rates, respectively, and then sent through a pipe to a gas mixer 4 formed of a metal or glass vacuum vessel. Gas mixer 4
May be commercially available, for example, under the trade name “Scare Mixer” (Sakura Seisakusho Co., Ltd.). As shown in FIG. 2, a combination of a split plate 11 and a displacement plate 12 in a pipe-shaped housing 10 As one element, the elements are arranged at right angles to each other and arranged in the longitudinal direction.
1 and replaced by the displacement plate 12, and re-division and replacement are repeatedly performed by the next element, and the raw material gas 1, the photosensitizer 2 and the carrier gas 3 are continuously mixed. The mixed gas mixed in the gas mixer 4 is introduced into the irradiation container 5 through a capillary, and irradiated with a laser beam having a wavelength tuned to the photosensitizer oscillated from the laser device 6 composed of, for example, a carbon dioxide laser.
【００１１】照射容器５は、例えば、図３に示すよう
に、キャピラリー２１から導入された混合ガスに対して
ＫＣｌまたはＺｎＳｅ窓２０を通して直交方向からレー
ザービーム２２を照射するようにしたものである。な
お、レーザービームのフルエンスは光増感物質が分解に
至らない程度に調整して照射する必要がある。このレー
ザービーム照射により反応は瞬時に生じて炭素超微粒子
が連続的に生成する。すなわち、照射を受けた混合ガス
中の光増感物質はレーザービームを吸収し、瞬時に振動
励起状態に到るが、続いて原料物質である炭化水素と分
子衝突を起こし、その振動エネルギーを炭化水素に移動
する。衝突によりエネルギーの移動を受けた炭化水素
は、自己分解または相互の衝突による分解反応を起こ
し、より低次の炭化水素に分解し、連続的に炭素超微粒
子を生成する。The irradiation container 5 irradiates a mixed gas introduced from a capillary 21 with a laser beam 22 from a perpendicular direction through a KCl or ZnSe window 20, as shown in FIG. The fluence of the laser beam needs to be adjusted so that the photosensitizer does not decompose before irradiation. By this laser beam irradiation, a reaction occurs instantaneously and carbon ultrafine particles are continuously generated. In other words, the photosensitizer in the irradiated gas mixture absorbs the laser beam and instantaneously enters a vibrationally excited state, but subsequently undergoes molecular collisions with the hydrocarbon, which is the raw material, and carbonizes the vibrational energy. Transfer to hydrogen. Hydrocarbons that have undergone energy transfer due to collisions undergo a decomposition reaction due to self-decomposition or mutual collision, decompose to lower-order hydrocarbons, and continuously produce ultrafine carbon particles.
【００１２】生成された炭素超微粒子は、キャリアガス
の流れに乗って取り出し口２３より製品捕集器７に至
り、フィルタで濾過され、キャリアガスと未反応ガス
は、ターボ分子ポンプ、ロータリポンプ等からなる真空
ポンプ９で排気される。製品である炭素超微粒子は時間
とともに製品捕集器７内に蓄積していくが、一定時間後
に下部に設けた製品回収器８に落下させて回収する。製
品捕集器７は二系統あり、相互の切替え運転によって捕
集を連続化する。The generated ultrafine carbon particles ride on the flow of the carrier gas, reach the product collector 7 from the outlet 23, and are filtered by a filter. The carrier gas and the unreacted gas are separated by a turbo molecular pump, a rotary pump, or the like. It is evacuated by a vacuum pump 9 consisting of The carbon ultrafine particles, which are products, accumulate in the product collector 7 with time, and after a certain period of time, are dropped into the product collector 8 provided below and collected. The product collector 7 has two systems, and the collection is continuous by mutual switching operation.
【００１３】例えば、図４に示すように、交互に切替え
運転される２つの製品捕集器７ａ、７ｂに配管３０、導
入弁３１、３２を通してキャリアガスで炭素超微粒子を
導入し、フィルタ３５で濾過して炭素超微粒子を回収し
てキャリアガスと未反応ガスは排気弁３２、３４を通し
て排気する。製品捕集器７ａから製品を回収する場合に
は、弁３１、３３を閉じるとともに、弁３２、３４を開
いて製品捕集器７ｂを運転させ、製品捕集器７ａの下部
から製品回収器８に落下させて回収する。交互に製品捕
集器７ａ、７ｂを動作させることにより、製品捕集を連
続化することができる。For example, as shown in FIG. 4, ultrafine carbon particles are introduced into the two product collectors 7a and 7b, which are operated alternately, by a carrier gas through a pipe 30 and introduction valves 31 and 32. After filtering, the carbon ultrafine particles are recovered, and the carrier gas and the unreacted gas are exhausted through exhaust valves 32 and 34. When collecting the product from the product collector 7a, the valves 31 and 33 are closed, and the valves 32 and 34 are opened to operate the product collector 7b. Drop and collect. By operating the product collectors 7a and 7b alternately, product collection can be continuous.
【００１４】このようにレーザー光を利用することによ
り非接触的に原料物質から高純度の炭素超微粒子を製造
するため、混合ガスの混合比、流量、レーザー光のエネ
ルギー等の条件を任意に変化させることができ、得られ
る製品の粒径、密度等を容易に制御することが可能であ
ると共に、原料に室温で気体状の物質を使用できるため
連続的プロセスが可能であり、量産性が向上し、経済性
を上げることが可能となる。As described above, in order to non-contactly produce high-purity carbon ultrafine particles from a raw material by utilizing laser light, conditions such as a mixing ratio of a mixed gas, a flow rate, and energy of laser light are arbitrarily changed. It is possible to easily control the particle size, density, etc. of the obtained product, and since a gaseous substance can be used as a raw material at room temperature, a continuous process is possible, and mass productivity is improved. It is possible to raise economic efficiency.
【００１５】[0015]
【実施例】原料にアセチレン、光増感物質にＳＦ6 、レ
ーザー装置に炭酸ガスレーザーを用いた場合、次の反応
により炭素超微粒子が製造できる。EXAMPLES When acetylene is used as a raw material, SF 6 is used as a photosensitizer, and a carbon dioxide laser is used as a laser device, ultrafine carbon particles can be produced by the following reaction.
【００１６】 ＳＦ6 ＋ ｈν→ＳＦ6 * ………（１） ＳＦ6 * ＋Ｃ2 Ｈ2 →ＳＦ6 ＋Ｃ2 Ｈ2 * ………（２） Ｃ2 Ｈ2 * →２Ｃ＋Ｈ2 ………（３） Ｃ2 Ｈ2 * ＋Ｃ2 Ｈ2 * →４Ｃ＋２Ｈ2 ………（４） なお、ｈνはレーザ光の光子エネルギーを示し、* 印は
励起状態の分子を示している。すなわち、ＳＦ6 にレー
ザー光を照射すると、励起状態（ＳＦ6 * ）となり、Ｓ
Ｆ6 * とＣ2 Ｈ2 との衝突によりエネルギーがＣ2 Ｈ2
に移動して励起状態（Ｃ2 Ｈ2 * ）となり、分解して炭
素超微粒子が生成される。SF 6 + hν → SF 6 * (1) SF 6 * + C 2 H 2 → SF 6 + C 2 H 2 * (2) C 2 H 2 * → 2C + H 2 (2) 3) C 2 H 2 * + C 2 H 2 * → 4C + 2H 2 (4) Here, hν indicates the photon energy of the laser light, and * indicates a molecule in an excited state. That is, when a laser beam is irradiated on SF 6 , the SF 6 is excited (SF 6 * ) and S 6
Due to the collision between F 6 * and C 2 H 2 , the energy is C 2 H 2
To an excited state (C 2 H 2 * ) and decompose to produce ultrafine carbon particles.
【００１７】[0017]
【発明の効果】以上のように本発明によれば、非接触プ
ロセスであるため、高純度の製品を得ることができ、ま
た、混合比、流量、レーザー光のエネルギーを任意に調
整できるため、炭素微粒子の粒子径、嵩密度等の粉体物
性を容易に制御することができる。また、連続プロセス
であるため、量産により製造コストの低減化を図ること
が可能となる。As described above, according to the present invention, since it is a non-contact process, a high-purity product can be obtained, and the mixing ratio, the flow rate, and the energy of the laser beam can be arbitrarily adjusted. Powder physical properties such as the particle diameter and bulk density of the carbon fine particles can be easily controlled. Further, since the process is a continuous process, it is possible to reduce the manufacturing cost by mass production.
【図１】 本発明の製造方法を実施する構成を示すブロ
ック図である。FIG. 1 is a block diagram showing a configuration for implementing a manufacturing method of the present invention.
【図２】 混合器の例を示す図である。FIG. 2 is a diagram illustrating an example of a mixer.
【図３】 照射容器を説明する図である。FIG. 3 is a diagram illustrating an irradiation container.
【図４】 製品捕集器を説明する図である。FIG. 4 is a diagram illustrating a product collector.
１…原料ガス、２…光増感物質、３…キャリアガス４…
ガス混合槽、５…照射容器、６…レーザー装置、７…製
品捕集器、８…製品回収器、９…真空ポンプ。1 ... source gas, 2 ... photosensitizer, 3 ... carrier gas 4 ...
Gas mixing tank, 5 irradiation container, 6 laser device, 7 product collector, 8 product collector, 9 vacuum pump.
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Claims (1)
的に吸収する光増感物質、及びキャリアガスを連続的に
混合する段階、 混合したガスを照射容器に導入し、前記特定の波長のレ
ーザ光を照射して光増感物質を励起し、励起した光増感
物質と原料物質との衝突によるエネルギー移動を利用し
て原料物質を分解する段階、 分解により生成した炭素超微粒子を回収する段階、 からなる ことを特徴とする光増感反応を利用した炭化水
素の分解による炭素超微粒子の製造方法。1. A material gas and a laser beam having a specific wavelength are selected.
Continuously absorb photosensitizer and carrier gas
Mixing , introducing the mixed gas into the irradiation vessel, and
Irradiates laser light to excite the photosensitizer,
Utilizing energy transfer by collision between substance and raw material
Decomposing the raw material Te step method of producing a carbon ultrafine particles by decomposition of hydrocarbons using a photosensitizer response characterized by comprising steps of, recovering the resulting carbon ultrafine particles by decomposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5087385A JP2933798B2 (en) | 1993-04-14 | 1993-04-14 | Method for producing ultrafine carbon particles by decomposition of hydrocarbon using photosensitization reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5087385A JP2933798B2 (en) | 1993-04-14 | 1993-04-14 | Method for producing ultrafine carbon particles by decomposition of hydrocarbon using photosensitization reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06298509A JPH06298509A (en) | 1994-10-25 |
| JP2933798B2 true JP2933798B2 (en) | 1999-08-16 |
Family
ID=13913433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5087385A Expired - Fee Related JP2933798B2 (en) | 1993-04-14 | 1993-04-14 | Method for producing ultrafine carbon particles by decomposition of hydrocarbon using photosensitization reaction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2933798B2 (en) |
-
1993
- 1993-04-14 JP JP5087385A patent/JP2933798B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| Ｃｈｅｍ．Ｐｈｙｓ．Ｌｅｔｔ．２１４（１）ｐ３４−３８ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06298509A (en) | 1994-10-25 |
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