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$CO_{2}$ Reforming of $CH_{4}$ Using Coke Oven Gas over $Ni/MgO-Al_{2}O_{3}$ Catalysts: Effect of the $MgO:Al_{2}O_{3}$ Ratio
| Content Provider | MDPI |
|---|---|
| Author | Park, Ho-Ryong Kim, Beom-Jun Lee, Yeol-Lim Ahn, Seon-Yong Kim, Kyoung-Jin Hong, Ga-Ram Yun, Seong-Jin Jeon, Byong-Hun Bae, Jong Wook Roh, Hyun-Seog |
| Copyright Year | 2021 |
| Description | Research is being actively conducted to improve the carbon deposition and sintering resistance of Ni-based catalysts. Among them, the $Al_{2}O_{3}$-supported Ni catalyst has been broadly studied for the dry reforming reaction due to its high $CH_{4}$ activity at the beginning of the reaction. However, there is a problem of deactivation due to carbon deposition of $Ni/Al_{2}O_{3}$ catalyst and sintering of Ni, which is a catalytically active material. Supplementing MgO in $Ni/Al_{2}O_{3}$ catalyst can result in an improved $MgAl_{2}O_{4}$ spinel structure and basicity, which can be helpful for the activation of methane and carbon dioxide molecules. In order to confirm the optimal supports’ ratio in $Ni/MgO-Al_{2}O_{3}$ catalysts, the catalysts were prepared by supporting Ni after controlling the $MgO:Al_{2}O_{3}$ ratio stepwise, and the prepared catalysts were used for $CO_{2}$ reforming of $CH_{4}$ (CDR) using coke oven gas (COG). The catalytic reaction was conducted at 800 °C and at a high gas hourly space velocity (GHSV = 1,500,000 $h^{−1}$) to screen the catalytic performance. The $Ni/MgO-Al_{2}O_{3}$ $(MgO:Al_{2}O_{3}$ = 3:7) catalyst showed the best catalytic performance between prepared catalysts. From this study, the ratio of $MgO:Al_{2}O_{3}$ was confirmed to affect not only the basicity of the catalyst but also the dispersion of the catalyst and the reducing property of the catalyst surface. |
| Starting Page | 1468 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal11121468 |
| Journal | Catalysts |
| Issue Number | 12 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-30 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Applied Chemistry Coke Oven Gas Co2 Reforming of Ch4 Mgo:al2o3 Support Reducibility Ni Dispersion Basicity |
| Content Type | Text |
| Resource Type | Article |
