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Supplied Oxygen Properties of NiO/NiAl2O4 in Chemical Looping Re-Forming of Biomass Pyrolysis Gas: The Influence of Synthesis Method
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-09-21 00:00:00 , DOI: 10.1021/acssuschemeng.8b03234 Yan Sun 1 , Enchen Jiang 1 , Xiwei Xu 1 , Jiamin Wang 1 , Zhiyu Li 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-09-21 00:00:00 , DOI: 10.1021/acssuschemeng.8b03234 Yan Sun 1 , Enchen Jiang 1 , Xiwei Xu 1 , Jiamin Wang 1 , Zhiyu Li 1
Affiliation
In this paper, the oxygen supplied properties of NiO/NiAl2O4 synthesized via different methods were investigated. Imp OCs showed the highest effective oxygen amounts of 14.08% (9.32%(NiO) and 4.76% (NiAl2O4)) and medium oxygen releasing rate via CO-TGA. The O transfer rate of OCs synthesized with the precipitation method is slow due to the big particle size. The supplied oxygen content is much less at the first stage for OCs, because NiO is inside the NiAl2O4, and the strong interaction is between NiO and NiAl2O4. The supplied O rate of Imp OCs is proper (not too fast or too slow) due to the uniform distribution and moderate particle size of NiO, and there is a proper interaction between NiO and NiAl2O4. The CH4 chemical looping re-forming varied from the full oxidation (CH4 → CO2) to partial oxidation (CH4 → CO) followed by cleavage reaction (CH4 → H2 + C), depending on the content of effective supplied oxygen amount in OCs. Moreover, it also proved that CO-TGA and CH4 chemical looping re-forming in the fixed bed are two effective methods for analyzing the supplied oxygen properties of OCs.
中文翻译:
NiO / NiAl 2 O 4在生物质热解气化学循环重整中的供氧特性:合成方法的影响
本文研究了通过不同方法合成的NiO / NiAl 2 O 4的供氧性能。Imp OCs的最高有效氧含量为14.08%(9.32%(NiO)和4.76%(NiAl 2 O 4)),并且通过CO-TGA释放出中等的氧气。用沉淀法合成的OCs的O转移速率由于粒径大而较慢。在OCs的第一阶段,提供的氧含量要少得多,因为NiO处于NiAl 2 O 4内部,并且NiO和NiAl 2 O 4之间存在较强的相互作用。。由于NiO的均匀分布和适中的粒径,Imp OCs的O供给速率适当(不太快或不太慢),并且NiO和NiAl 2 O 4之间存在适当的相互作用。CH 4的化学环重整从完全氧化(CH 4 →CO 2)到部分氧化(CH 4 →CO)然后裂解反应(CH 4 →H 2 + C)有所不同,具体取决于有效供应量OC中的氧气量。此外,还证明了固定床中CO-TGA和CH 4的化学环重整是分析OCs的供氧特性的两种有效方法。
更新日期:2018-09-21
中文翻译:
NiO / NiAl 2 O 4在生物质热解气化学循环重整中的供氧特性:合成方法的影响
本文研究了通过不同方法合成的NiO / NiAl 2 O 4的供氧性能。Imp OCs的最高有效氧含量为14.08%(9.32%(NiO)和4.76%(NiAl 2 O 4)),并且通过CO-TGA释放出中等的氧气。用沉淀法合成的OCs的O转移速率由于粒径大而较慢。在OCs的第一阶段,提供的氧含量要少得多,因为NiO处于NiAl 2 O 4内部,并且NiO和NiAl 2 O 4之间存在较强的相互作用。。由于NiO的均匀分布和适中的粒径,Imp OCs的O供给速率适当(不太快或不太慢),并且NiO和NiAl 2 O 4之间存在适当的相互作用。CH 4的化学环重整从完全氧化(CH 4 →CO 2)到部分氧化(CH 4 →CO)然后裂解反应(CH 4 →H 2 + C)有所不同,具体取决于有效供应量OC中的氧气量。此外,还证明了固定床中CO-TGA和CH 4的化学环重整是分析OCs的供氧特性的两种有效方法。