EFFECTS OF SUPPORTS ON THE ACTIVITY OF NICKEL CATALYST FOR CH4 REFORMING WITH CO2 |
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Authors: | Wen-Ying Li Jie Feng Ke-Chang Xie Shu-Cai Guo |
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Affiliation: |
a Taiyuan University of Technology, Taiyuan, China
b Dalian University of Technology, Dalian, China |
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Abstract: | Nickel catalyst is an effective catalyst for reforming CH4 with CO2. The reaction between CO2 and CH4 at 1073 K. in the pressure of 0·1 MPa has been studied over different materials supported nickel metal in a fixed-bed reactor. Different catalysts before and after reaction were characterized by SEM, XRD, XPS. Results shows that CO and H2 are basically produced at the same ratio. When the feed ratio CO2/CH4 is less than 0·5, less C2~C4 hydrocarbons are detected. When the feed ratio CO2/CH4 is 1, Ni/a- Al2O3 catalyst has the highest activity. However, when the feed ratio CO2/CH4 is greater than 1, Ni/y- A1/O3, Ni/a- A12O3, Ni/SiO2 and Ni/HZSM-5 had higher activity; Ni/clinoptilolite basically no activity. Different kinds of carbon deposit are established. |
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