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shijinwen金虫 (小有名气)
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[交流]
讨论一下“机械催化”产氢吧
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Domen Kazunari于1998年在CC上以“Mechano-catalytic overall water splitting”为题目，提出了全新的“机械催化产氢”的概念。之后，发表了一系列相关文章。 [98]Mechano-catalytic overall water splitting[Chem. Commun.] [99]Mechano-catalysis—a novel method for overall water splitting[PCCP] [00]A study of mechano-catalysts for overall water[JPCB] [00]Mechano-catalytic overall water splitting (II) nafion-deposited Cu2O[Applied Catalysis A：General] [00]Mechano-catalytic overall water splitting on some mixed oxides[Catalysis Today] [00]Mechano-catalytic overall water splitting on some oxides (II)[Applied Catalysis A：General] [00]Mechano-catalytic overall water-splitting into hydrogen and oxygen on some metal oxides[Applied Energy] 很多同行也对其提出了质疑。 [04]Comment on “A Study of Mechano-Catalysis for Overall Water Splitting”[JPCB] 请问各位对“机械催化产氢”或“机械催化”是怎么认识的？ [ Last edited by nxl5096224 on 2007-6-5 at 23:35 ] |
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daiqiguang
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2楼2006-12-05 18:16:27
可可西里
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3楼2006-12-05 18:55:11
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4楼2006-12-05 18:56:49
daiqiguang
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文章还挺多的 A note on the gas-evolution of mechano-catalytic water-splitting system • SHORT COMMUNICATION International Journal of Hydrogen Energy, Volume 26, Issue 4, April 2001, Page 401 T. Ohta Mechano-catalytic overall water splitting on some mixed oxides • ARTICLE Catalysis Today, Volume 63, Issues 2-4, 25 December 2000, Pages 175-181 Go Hitoki, Tsuyosi Takata, Shigeru Ikeda, Michikazu Hara, Junko N. Kondo, Masato Kakihana and Kazunari Domen Efficiency of mechano-catalytic water-splitting system • ARTICLE International Journal of Hydrogen Energy, Volume 25, Issue 12, December 2000, Pages 1151-1156 T. Ohta On the theory of mechano-catalytic water-splitting system • ARTICLE International Journal of Hydrogen Energy, Volume 25, Issue 10, 1 October 2000, Pages 911-917 Tokio Ohta Energy systems and adaptive complexity • ARTICLE Applied Energy, Volume 67, Issues 1-2, September 2000, Pages 3-16 Tokio Ohta Mechano-catalytic overall water-splitting into hydrogen and oxygen on some metal oxides • ARTICLE Applied Energy, Volume 67, Issues 1-2, September 2000, Pages 159-179 Kazunari Domen, Shigeru Ikeda, Tsuyoshi Takata, Akira Tanaka, Michikazu Hara and Junko N. Kondo Mechano-catalytic water-splitting • ARTICLE Applied Energy, Volume 67, Issues 1-2, September 2000, Pages 181-193 Tokio Ohta Mechano-catalytic overall water splitting on some oxides (II) • ARTICLE Applied Catalysis A: General, Volume 200, Issues 1-2, 28 August 2000, Pages 255-262 Tsuyosi Takata, Shigeru Ikeda, Akira Tanaka, Michikazu Hara, Junko N. Kondo and Kazunari Domen Preliminary theory of mechano-catalytic water-splitting • ARTICLE International Journal of Hydrogen Energy, Volume 25, Issue 4, 1 April 2000, Pages 287-293 T. Ohta Mechano-catalytic overall water splitting (II) nafion-deposited Cu2O • ARTICLE Applied Catalysis A: General, Volume 190, Issues 1-2, 3 January 2000, Pages 35-42 Michikazu Hara, Hironori Hasei, Masaaki Yashima, Sigeru Ikeda, Tsuyoshi Takata, Junko N. Kondo and Kazunari Domen 发两篇大家共同研究 |
5楼2006-12-05 19:32:00
daiqiguang
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新虫可能不能发附件,我传两篇文章,给大家看看
★ ★ ★ ★ ★
berlin(金币+5):老戴就是牛，这么及时，佩服，能否回帖说说这个概念，没有接触过
berlin(金币+5):老戴就是牛，这么及时，佩服，能否回帖说说这个概念，没有接触过
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文章还挺多的 A note on the gas-evolution of mechano-catalytic water-splitting system • SHORT COMMUNICATION International Journal of Hydrogen Energy, Volume 26, Issue 4, April 2001, Page 401 T. Ohta Mechano-catalytic overall water splitting on some mixed oxides • ARTICLE Catalysis Today, Volume 63, Issues 2-4, 25 December 2000, Pages 175-181 Go Hitoki, Tsuyosi Takata, Shigeru Ikeda, Michikazu Hara, Junko N. Kondo, Masato Kakihana and Kazunari Domen Efficiency of mechano-catalytic water-splitting system • ARTICLE International Journal of Hydrogen Energy, Volume 25, Issue 12, December 2000, Pages 1151-1156 T. Ohta On the theory of mechano-catalytic water-splitting system • ARTICLE International Journal of Hydrogen Energy, Volume 25, Issue 10, 1 October 2000, Pages 911-917 Tokio Ohta Energy systems and adaptive complexity • ARTICLE Applied Energy, Volume 67, Issues 1-2, September 2000, Pages 3-16 Tokio Ohta Mechano-catalytic overall water-splitting into hydrogen and oxygen on some metal oxides • ARTICLE Applied Energy, Volume 67, Issues 1-2, September 2000, Pages 159-179 Kazunari Domen, Shigeru Ikeda, Tsuyoshi Takata, Akira Tanaka, Michikazu Hara and Junko N. Kondo Mechano-catalytic water-splitting • ARTICLE Applied Energy, Volume 67, Issues 1-2, September 2000, Pages 181-193 Tokio Ohta Mechano-catalytic overall water splitting on some oxides (II) • ARTICLE Applied Catalysis A: General, Volume 200, Issues 1-2, 28 August 2000, Pages 255-262 Tsuyosi Takata, Shigeru Ikeda, Akira Tanaka, Michikazu Hara, Junko N. Kondo and Kazunari Domen Preliminary theory of mechano-catalytic water-splitting • ARTICLE International Journal of Hydrogen Energy, Volume 25, Issue 4, 1 April 2000, Pages 287-293 T. Ohta Mechano-catalytic overall water splitting (II) nafion-deposited Cu2O • ARTICLE Applied Catalysis A: General, Volume 190, Issues 1-2, 3 January 2000, Pages 35-42 Michikazu Hara, Hironori Hasei, Masaaki Yashima, Sigeru Ikeda, Tsuyoshi Takata, Junko N. Kondo and Kazunari Domen 发两篇大家共同研究 |
6楼2006-12-05 19:36:59
shijinwen
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7楼2006-12-05 19:41:10
8楼2006-12-05 21:08:14
shijinwen
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9楼2006-12-05 22:58:20
shijinwen
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文献叙述如下 “Some characteristic features to be noted of mechano-catalytic overall water splitting are as follows: (1) The reaction proceeds by the mechanical energy provided by rubbing the oxide powder at the interface between a rotating stirring rod and the bottom of a reaction vessel. Any vigorous stirring without rubbing the bottom of the reaction vessel cannot cause the reaction, suggesting that the collision between the oxide particles or with the stirring rod is ineffective. The rate of H2 and O2 evolution monotonically increases with the rate of rotation of a stirring rod. (2) The reaction is highly dependent on the type of oxide material. Effective materials are NiO, Co3O4, Cu2O, Fe3O4, RuO2, and IrO2 among binary oxides. Interestingly, CuO and Fe2O3 are inert. Some ternary oxides containing Cu(I), Ni(II), or Co(II) such as CuAlO2 and CuFeO2 also show the activity. Typical photocatalysts such as TiO2 and ZnO are completely inactive. (3) The reaction is also dependent on the material of the bottom of the reaction vessel. Quartz and Pyrex glasses gave the best results among the materials examined so far. Alumina and CaF2 also showed low but definite activity. Some organic materials such as PTFE and acrylate were also examined, and a small amount of H2 but no O2 was obtained. (4) The conversion efficiency from mechanical to chemical energy is a few percent. Mechanical energy is that consumed at the interface between the rotating stirring rod and the bottom of the reaction vessel, which was estimated by the torque and the rate of reVolution in water with and without rubbing the bottom of the Vessel. The chemical energy estimated by the rate of water decomposition was then diVided by the mechanical energy (see ref 3 for details). A typical value for NiO in a Pyrex reaction vessel is 4.3%. (5) The reaction rate depends on the ambient pressure. The reaction is typically carried out under reduced pressure where only water vapor remains in a closed gas circulation system. With increasing pressure of H2 and O2 in the system, the reaction rate decreases. Typically, when 30-100 Torr (1 Torr ) 133.3 Pa) of H2 and O2 mixture is accumulated, the system is evacuated to continue the reaction. (6) Distilled water seems to be the best media for the reaction. Whenever any electrolytes are added, the rate of H2 and O2 evolution is retarded. When the reaction was carried out in a mixture of methanol and water, both H2 and O2 evolutions were observed, although the amount of O2 was slightly less than stoichiometric. In water vapor atmosphere without liquid water, no reaction takes place. (7) From the isotope experiment using a H2 18O/H2 16O mixture, the isotope composition of evolved O2 coincided with that of water within the experimental error. (8) No photoirradiation effect is observed for all mechanocatalysts except Cu2O.1,2,4,5 However, even for Cu2Oit is not attributed to the photon energy conversion but to some effect that maintains the higher activity of the mechano-catalytic reaction by some unknown mechanism.” 这样看了大家可能还是不是很明白。还是请见附件的原文吧 [ Last edited by shijinwen on 2006-12-6 at 09:34 ] |
10楼2006-12-06 09:20:34