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在YBa_2Cu_3O_(6~7)超导催化剂上CO_2加氢制醇的研究
Study on the Hydrogenation of CO_2 over YBa_2Cu_3O_(6--7) Superconductor Catalyst

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在YBa_2Cu_3O_(6~7)超导催化剂上CO_....pdf (693.5Kb)
Date
1998
Author
高利珍
严前古
于作龙
李基涛
万惠霖
蔡启瑞
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  • 化学化工-已发表论文 [14237]
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Abstract
在ybA_2Cu_3O_(6~7)超导催化剂上进行CO_2加氢制醇的反应,研究了温度、压力和空速对催化剂活性和甲醇收率的影响.对催化剂进行了Xrd,原位fT-Ir,XPS,ESr和AfM表征,表明ybA_2Cu_3O_(6~7)在反应状态下被还原分解,铜主要被还原为Cu--+;CO_2加氢制醇的中间态可能为醛基、甲氧基;反应前催化剂粒度较大,反应后催化剂变得松散,粒度变小.
 
The hydrogenation of CQj over YBa^Cu^O^.j superconductor catalyst was investigated using XRD, in - situ FT- IR, XPS, ESR, TPR and ATM techniques.It is shown that the CH3OH selectivity is directly proportional to the reaction pressure and space velocity, but is inversely proportional to the reaction temperature.The Cu2+ ions in YBa2Cu3O6--7 were mainly reduced to Cu+ in the presence of H2 and CO2.The intermediates in the catalytic reaction might be aldehyde and methoxy radical.During the hydrogenation the catalyst might be decomposed.
 
Citation
化学学报,1998,(10):81-86
URI
https://dspace.xmu.edu.cn/handle/2288/107611

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