Ni nanocatalysts supported on mesoporous Al2O3–CeO2 for CO2 methanation at low temperature

Yushan Wu; Jianghui Lin; Guangyuan Ma; Yanfei Xu; Jianli Zhang; Chanatip Samart; Mingyue Ding

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Ni nanocatalysts supported on mesoporous Al2O3–CeO2 for CO2 methanation at low temperature

机译：Ni纳米催化剂在低温下支持介孔Al2O3-CeO 2，用于CO 2甲烷化

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The selectivity and activity of a nickel catalyst for the hydrogenation of carbon dioxide to form methane at low temperatures could be enhanced by mesoporous Al _(2) O _(3) –CeO _(2) synthesized through a one-pot sol–gel method. The performances of the as-prepared Ni/Al _(2) O _(3) –CeO _(2) catalysts exceeded those of their single Al _(2) O _(3) counterpart giving a conversion of 78% carbon dioxide with 100% selectivity for methane during 100 h testing, without any deactivation, at the low temperature of 320 °C. The influence of CeO _(2) doping on the structure of the catalysts, the interactions between the mesoporous support and nickel species, and the reduction behaviors of Ni ~(2+) ions were investigated in detail. In this work, the addition of CeO _(2) to the composites increased the oxygen vacancies and active metallic nickel sites, and also decreased the size of the nickel particles, thus improving the low temperature catalytic activity and selectivity significantly.

机译：通过单壶溶胶 - 凝胶合成的介孔Al _（2）O _（2）可以增强在低温下在低温下形成甲烷的二氧化碳氢化氢化二氧化碳氢化的选择性和活性方法。制备的Ni / Al _（2）O o _（3）℃_（2）催化剂的性能超过了它们的单一Al _（2）o _（3）对应物，其转换为78％二氧化碳100％在100小时测试期间为100％选择性，在320°C的低温下没有任何停用。 CEO _（2）掺杂对催化剂结构的影响，中孔载体和镍种类之间的相互作用，并详细研究了Ni〜（2+）离子的还原行为。在这项工作中，添加CEO _（2）到复合材料增加了氧空位和活性金属镍位点，并且还降低了镍颗粒的尺寸，从而显着改善了低温催化活性和选择性。

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《RSC Advances》 |2020年第4期|共6页
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Yushan Wu; Jianghui Lin; Guangyuan Ma; Yanfei Xu; Jianli Zhang; Chanatip Samart; Mingyue Ding;
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1. Ni nanocatalysts supported on mesoporous Al2O3-CeO2 for CO2 methanation at low temperature [J] . Wu Yushan, Lin Jianghui, Ma Guangyuan, RSC Advances . 2020,第4期

机译：Ni纳米催化剂在低温下支持介孔Al2O3-CeO 2，用于CO 2甲烷化
2. Sol-gel vs. impregnation preparation of MgO and CeO2 doped Ni/Al2O3 nanocatalysts used in dry reforming of methane: Effect of process conditions, synthesis method and support composition [J] . Rad Seyed Jamal Hassani, Haghighi Mohammad, Eslami Ali Alizadeh, International journal of hydrogen energy . 2016,第11期

机译：甲烷干法重整制MgO和CeO2掺杂的Ni / Al2O3纳米催化剂的溶胶-凝胶与浸渍制备：工艺条件，合成方法和载体组成的影响
3. CO and CO2 methanation over Ni catalysts supported on CeO2, Al2O3 and Y2O3 oxides [J] . Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications . 2020,第期

机译：在CeO2，Al2O3和Y2O3氧化物上负载Ni催化剂的CO和CO2甲烷化
4. Efficient methanation of syngas at low temperature in slurry reactor over Zr doped Ni/Al2O3 [C] . Junfeng Zhang, Yunxing Bai, Xiaoxing Wang ACS National Meeting and Exhibition . 2013

机译：Zr掺杂Ni / Al2O3的浆料反应器低温下合成气的高效甲烷化
5. Mesoporous TiO2 Encapsulated Monometallic (Cu, Co, Ni, Pd, Sn, Zn) Nanocatalysts for Steam Reforming of Methanol [D] . Owen, Sri Lanka S. 2014

机译：中孔TiO2包封的单金属（Cu，Co，Ni，Pd，Sn，Zn）纳米催化剂用于蒸汽重整甲醇
6. Recent Progresses in Constructing the Highly Efficient Ni Based Catalysts With Advanced Low-Temperature Activity Toward CO2 Methanation [O] . Chufei Lv, Leilei Xu, Mindong Chen, 2020

机译：高效率的具有低温活性的高效Ni基催化剂对CO2甲烷化反应的研究进展
7. CO and CO2 methanation over Ni catalysts supported on CeO2, Al2O3 and Y2O3 oxides [O] . C. Italiano, J. Llorca, L. Pino, 2020

机译：在CeO2，Al2O3和Y2O3氧化物上负载的Ni催化剂的CO和CO2甲烷化

Ni nanocatalysts supported on mesoporous Al2O3–CeO2 for CO2 methanation at low temperature

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