| Inhibition of methane formation in steam reforming reactions through modification of Ni catalyst and the reactants | |
| Department | 羰基合成与选择氧化国家重点实验室 ; 精细石油化工中间体国家工程研究中心 |
Hu X(胡勋); Lv GX(吕功煊)
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| 2009 | |
| Source Publication | Green Chemistry
 |
| ISSN | 1463-9262 |
| Volume | 11Pages:724-732 |
| Abstract | Methane, a greenhouse gas and a main by-product in steam reforming reaction, can greatly diminish hydrogen yield. Modifications of both the catalyst and reactants were performed in this study to suppress methane formation. Ni/Al2O3 catalysts modified with a series of promoters (Li, Na, K, Mg, Fe, Co, Zn, Zr, La, Ce) were evaluated in acetic acid reforming reaction. The addition of Co, Zr, La, or Ce to Ni/Al2O3 promoted the methanation reaction, and consequently promoted methane formation. Conversely, alkali metal modified samples effectively inhibited methane formation, especially the Ni–K/Al2O3 catalyst. Moreover, the addition of alkali metal remarkably increased the number of metallic Ni sites on the catalyst surface by promoting the reduction of Ni oxides, which enhanced the catalytic activity. In addition, the presence of K on alumina also promoted stability of the Ni catalyst through suppression of coke formation. Type of fuels reformed also affected methane formation. Methane selectivity was much higher in steam reforming of the neutral fuels (ethanol, 1-propanol) than in steam reforming of the acidic fuels (acetic acid, propanoic acid). Acidification of neutral alcohols with nitric acid remarkably suppressed methane formation, which was accomplished through the suppression of the methanation reaction. Besides, the addition of nitric acid to ethanol can help eliminate coke deposition in ethanol reforming reactions, since production of the main carbon precursor, ethylene, is suppressed to a significant extent in the presence of nitric acid. |
| Subject Area | 环境催化与清洁能源 |
| Funding Organization | the 973 Project of China (No. G 2003CB214503;2007CB613305;2009CB220003) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 环境催化与清洁能源研究组 ; 环境催化与氢能源研究组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/530 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Lv GX(吕功煊) |
| Recommended Citation GB/T 7714 | Hu X,Lv GX. Inhibition of methane formation in steam reforming reactions through modification of Ni catalyst and the reactants[J]. Green Chemistry,2009,11:724-732. |
| APA | 胡勋,&吕功煊.(2009).Inhibition of methane formation in steam reforming reactions through modification of Ni catalyst and the reactants.Green Chemistry,11,724-732. |
| MLA | 胡勋,et al."Inhibition of methane formation in steam reforming reactions through modification of Ni catalyst and the reactants".Green Chemistry 11(2009):724-732. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 13_Green Chem.,2009,（584KB） | 开放获取 | License | View Application Full Text | |||
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