公佈欄

教授課程

普通化學

－生命科學系

－生技系

投影片下載

個人學經歷

研究興趣

研究著作

實驗室成員

詩篇 23

耶和華是我的牧者、我必不至缺乏。他使我躺臥在青草地上、領我在可安歇的水邊。他使我的靈魂甦醒、為自己的名引導我走義路。我雖然行過死蔭的幽谷、也不怕遭害，因為你與我同在，你的杖、你的竿、都安慰我。在我敵人面前、你為我擺設筵席，你用油膏了我的頭、使我的福杯滿溢。我一生一世必有恩惠慈愛隨著我，我且要住在耶和華的殿中、直到永遠。

(1) Water gas shift reaction on Cu nanoparticles prepared by atomic layer epitaxy method

The atomic layer epitaxy (ALE) technique has been used to prepare uniform copper nanoparticles dispersed on a silica support (ALE-Cu/SiO₂ with 2.85±0.32 nm), which are highly active in the water gas shift reaction. Infrared spectra of CO adsorption are employed to study the active sites on ALE-Cu/SiO₂ surface, suggesting that two major active sites are found on the copper surface, namely defect sites and highly dispersed Cu particles and/or isolated Cu atoms sites.  We report here that the defect sites on these small Cu particles or isolated Cu atoms provide high activity for the water gas shift reaction. The high efficiency of the water gas shift reaction on the ALE-Cu/SiO₂ catalyst may be ascribed to its strong activity in promoting H₂O dissociation. The defect sites on the Cu nanoparticles play a key role in the redox mechanism in the WGS reaction, which causes intense dissociation of H₂O to form atomic oxygen.

 (2) Chemical conversion of carbon dioxide  to carbon nanofibers

Commercially available Ni/Al₂O₃ samples containing various concentrations of potassium and sodium were used to achieve carbon deposition from CO₂ via catalytic hydrogenation. Experimental results show that alkali additives can induce the formation of carbon nanofibers or carbon deposition on Ni/Al₂O₃ during the CO₂ hydrogenation reaction.

Selected papers (2006-present)

1.      C.S. Chen^*, T.W. Lai, "Effect of active sites for a water-gas shift reaction on Cu nanoparticles "Journal of Catalysis, under review (manuscript no. JCAT-10-1)

2.      C.S. Chen^*, J.H. Lin, J.H. You, K.H Yang "The effects of potassium on Ni-K/Al₂O₃ catalysts in the synthesis of carbon nanofibers by catalytic hydrogenation of CO₂" Journal of Physical Chemistry A, (invited submission) in press, DOI: 10.1021/jp904434e

3.      C.S. Chen^*, J.H. Lin, J.H. Wu, C.Y. Chiang "Growth of carbon nanofibers synthesized from CO₂ hydrogenation on a K/Ni/Al₂O₃ catalyst" Catalysis Communications, 2009. 11, 220 (SCI: 2.791)

4.      C.S. Chen^*, J.H. Lin, T.W. Lai, Bao-Hui Li "Active Sites on Cu/SiO₂ Prepared by Atomic Layer Epitaxy Technique for a Low-Temperature Water Gas Shift Reaction" Journal of Catalysis, 2009, 263, 155 (SCI: 5.167)

5.      C.S. Chen^*, J.H. Lin, T.W. Lai "Low-Temperature Water Gas Shift Reaction on Cu/SiO₂ Prepared by Atomic Layer Epitaxy Technique" Chemical Communications 2008, 4983 (SCI: 5.34)

6.      J.H Lin^*, C.S. Chen, H.L. Ma, C.W. Chang, C.Y. Hsu, H.W. Chen "Self-assembly of multi-walled carbon nanotubes on a porous carbon surface by catalyst-free chemical vapor deposition" Carbon 2008, 46,1619 (SCI: 4.373)

7.      C.S. Chen^*, J.H. You, J.H. Lin, Y.Y. Chen "Effect of highly dispersed active sites of Cu/TiO₂ catalyst on CO oxidation "Catalysis Communications 2008, 9, 2381 (SCI: 2.791)

8.      C.S. Chen^*, J.H. You, J.H. Lin, C.R. Chen, K.M. Lin " Effect of a nickel promoter on the reducibility of a commercial Cu/ZnO/Al₂O₃ catalyst for CO oxidation" Catalysis Communications 2008, 9, 1230 (SCI: 2.791)

9.      C.S. Chen ^*, J.H. Lin , S.J. Lin, H.T. Huang, H.L. Ma " Synthesis of carbon nanofiber from catalytic hydrogenation of CO₂ over Ni-K/Al₂O₃ catalysts" Carbon, 2008, 46, 369 (SCI: 4.373)

10.  J.H. Lin^*, C.S. Chen, H.L. Ma, C.Y. Hsu and H.W. Chen^*"Synthesis of MWCNTs on CuSO₄/Al₂O₃ using chemical vapor deposition from methane" Carbon, 2007, 45, 223 (SCI: 4.373)

11.  C.S. Chen*,, J.H. Lin, J. H. You and C. R. Chen "Properties of Cu(thd)₂ as a Precursor to Prepare Cu/SiO₂ Catalyst Using the Atomic Layer Epitaxy Technique" Journal of the American Chemical Society 2006, 128, 15950 (SCI: 8.091)

12.  C.S. Chen^*, J.H. Lin and H.W. Chen, "Hydrogen adsorption sites studied by carbon monoxide adsorption to explain the hydrogenation activity of benzene on Pd and Pt catalysts" Applied Catalysis A 2006, 298, 161 (SCI: 3.19)