Announcement for Downloading full text filePlease respect the Copyright Act.
All digital full text dissertation and theses from this website are authorized the copyright owners. These copyrighted full-text dissertation and theses can be only used for academic, research and non-commercial purposes. Users of this website can search, read, and print for personal usage. In respect of the Copyright Act of the Republic of China, please do not reproduce, distribute, change, or edit the content of these dissertations and theses without any permission. Please do not create any work based upon a pre-existing work by reproduction, Adaptation, Distribution or other means.
URN etd-0816106-120546 Statistics This thesis had been viewed 3113 times. Download 1523 times. Author Dong-He Jeng Author's Email Address No Public. Department Chemical Engineering Year 2005 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 78 Title Co-Ni metal catalysts for steam reforming of ethanol Keyword ethanol steam reforming ethanol steam reforming Abstract The objective of this research was to investigate the Co-Ni bimetal catalysts applied in the ethanol steam reforming to produce hydrogen to substitute for fossil fuel. In this research, we prepared Co-Ni/ Al2O3、Co-Ni/MgO、Co-Ni/MgO-Al2O3、Co/MgO-Al2O3、Ni/MgO-Al2O3、Co-Ni-K/MgO-Al2O3 catalysts by co-impregnation. Using TPR, XRD, and BET analyzed the characteristic of catalysts, and study the effect of Co-Ni bimetal, MgO-Al2O3 supported, K promoter on reduction temperature, crystal phase and crystalline size, and surface area. The reaction was carried out in fixed-bed reactor with designed temperature( 550℃ - 750℃ ) and ambient pressure. And the products were sent by the way on-line method into GC for analysis.
The results show the decrease of catalysts surface area was due to the blockage of partial small pores by Co-Ni particles. For the activity of steam reforming reaction, we find the K-Co-Ni/MgO-Al2O3 possess the highest conversion (94.8%) and hydrogen selectivity (73.2%).
Advisor Committee Ien-Whei Chan - advisor
Feg-Wen Chang - co-chair
Li-Tang Teng - co-chair
Files Date of Defense 2006-07-25 Date of Submission 2006-08-16