| 傅利勇,吕绍洁.CH4,CO2和O2制合成气反应中载体对Ni催化剂抗氧化性能的影响[J].分子催化,1999,(5):367-372 |
| CH4,CO2和O2制合成气反应中载体对Ni催化剂抗氧化性能的影响 |
| Effect of Supports on Resistance to Oxidation of Ni Catalysts in Reaction of CH_4 with CO_2 and O_2 to Syngas |
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| DOI： |
| 中文关键词: 甲烷 镍 催化剂载体 抗氧化性能 合成气 催化剂 |
| 英文关键词:Methane,Support of Ni catalyst,Carbon dioxide,Oxygen,Syngas,Resistance to oxidation |
| 基金项目: |
| 傅利勇 吕绍洁 |
| 中国科学院成都有机化学研究所天然气转化开放实验室!成都610041 |
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| 中文摘要: |
| 在ＣＨ４、ＣＯ２ 催化氧化制合成气反应中， Ｎｉ／Ａｌ２Ｏ３ 催化剂在高温下生成ＮｉＡｌ２Ｏ４ 尖晶石，是导致催化剂失活的一个重要因素． 通过向载体（Ａｌ２Ｏ３）中添加各种氧化物， 使得催化剂的抗氧化性能得到改善． 并运用ＴＰＲ、ＸＲＤ对催化剂进行表征， 发现催化剂的抗氧化性顺序为： Ｎｉ／ＣａＯ－Ａｌ２Ｏ３ ＞ Ｎｉ／ＭｇＯ－Ａｌ２Ｏ３ ＞ Ｎｉ／ＣｅＯ２－Ａｌ２Ｏ３ ＞ Ｎｉ／Ｌａ２Ｏ３－Ａｌ２Ｏ３ ＞ Ｎｉ／Ｙ２Ｏ３－Ａｌ２Ｏ３ ＞ Ｎｉ／ＴｉＯ２－Ａｌ２Ｏ３＞ Ｎｉ／Ａｌ２Ｏ３＞ Ｎｉ／Ｆｅ２Ｏ３－Ａｌ２Ｏ３． |
| 英文摘要: |
| In the reaction of catalytic oxidation of methane with carbon dioxide and oxygen to syngas, the formation of NiAl 2O 4 spinal is an important factor to cause deactivation of NiO/Al 2O 3 catalyst. The resistance to oxidation of catalysts can be improved by adding different oxides to Al 2O 3 support. The catalysts were characterized by TPR and XRD. The experimental results indicate that the order of resistance to oxidation of catalyst is as follows: Ni/CaO\|Al 2O 3>Ni/MgO\|Al 2O 3>Ni/CeO 2\|Al 2O 3>Ni/La 2O 3\|Al 2O 3>Ni/Y 2O 3\|\{Al 2O 3\}>Ni/TiO 2\|Al 2O 3>Ni/Al 2O 3>Ni/Fe 2O 3\|Al 2O 3. |
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