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摘要
采用共沉淀法制备了Ni/La2O3催化剂,用于催化餐厨废油模型化合物(MWCO)的CO2重整反应制富氢合成气和碳纳米管(CNTs)。利用ICP-OES、N2-BET、XRD、H2-TPR对催化剂的结构和性能进行表征。研究了不同Ni金属质量分数催化剂、裂解温度对重整反应的影响。结果表明,20Ni/La2O3为催化剂时,在750℃下表现出高活性和稳定性,气体产物中氢气体积分数为45.6%,H2/CO值为1.69。对获得的碳产品进行SEM、TEM、TG和Raman分析表明,其为具有高纯度和高石墨程度的CNTs。
Abstract
Ni/La2O3 catalyst is prepared by co-precipitation method,and used to catalyze the reforming reaction between CO2 and model compounds of waste cooking oil (MWCO) to produce hydrogen-rich syngas and carbon nanotubes (CNTs).The structure and properties of the catalysts are characterized by ICP-OES,N2-BET,XRD and H2-TPR.The influences of catalyst with different Ni content and pyrolysis temperature on reforming reaction are studied.It is shown that 20Ni/La2O3 catalyst exhibits high activity and stability at 750℃,over which the content of hydrogen in gaseous products is 45.6% and H2/CO value is 1.69.It is verified through SEM,TEM,TG and Raman analysis that the obtained carbon products are CNTs with high purity and high graphite degree.
关键词
餐厨废油模型化合物
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碳纳米管
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合成气
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CO2重整
Key words
model compounds of waste cooking oil
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carbon nanotubes
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syngas
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CO2 reforming
Author summay
何卫东(1996-),男,硕士研究生,研究方向为可再生能源,2753231274@qq.com
Ni/La2O3的制备及其催化餐厨废油CO2重整制合成气的研究[J].
现代化工, 2022, 42(11): 161-169 DOI:10.16606/j.cnki.issn0253-4320.2022.11.030