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摘要
为了扩展传统铜锌铝催化剂在车载甲醇自热式重整(ATRM)制氢过程中的应用,采用反向共沉淀法制备了不同铜锌摩尔比的铜锌铝氧化物催化剂,并与工业铜锌铝催化剂SCST-401进行比较。结果发现,该类催化剂的性能随着铜锌摩尔比的增加而提高。其中,Cu30Zn10Al催化剂在200~600℃范围内具有最佳的ATRM反应性能,而不含铜的催化剂Zn40Al在500~600℃高温下具有与Cu20Zn20Al和Cu10Zn30Al相近的活性。此外,Cu30Zn10Al催化剂与商用催化剂SCST-401的甲醇转化率也相近,但前者铜的摩尔分数却远小于后者,且性能更稳定。在200~300℃的低温下其ATRM反应表现出更高的活性。
Abstract
To study the feasibility of using conventional CuZnAl-oxides as catalysts for on-board hydrogen production by autothermal reforming of methanol (ATRM),CuZnAl-oxides catalyst with different copper-zinc ratios are prepared via reverse co-precipitation method.The samples are compared with commercial CuZnAl catalyst SCST-401.It is found that the performance of such type of catalysts improves with the increased mole ratio of copper to zinc.The prepared Cu30Zn10Al catalyst shows the best performance for ATRM in the range of 200-600℃,while Zn40Al catalyst is found to have the similar activity with those of Cu20Zn20Al and Cu10Zn30Al at the temperature from 500℃ to 600℃.In addition,Cu30Zn10Al catalyst can bring about similar methanol conversion with that brought by commercial catalyst SCST-401 that has a much higher copper content than Cu30Zn10Al.Cu30Zn10Al exhibits more stable than SCST-401.Furthermore,Cu30Zn10Al shows higher activity for ATRM at low temperature from 200℃ to 300℃.
关键词
车载制氢
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稳定性
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铜锌铝催化剂
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自热式重整
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甲醇
Key words
onboard hydrogen production
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stability
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CuZnAl catalyst
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autothermal reforming
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methanol
Author summay
黄骁(1991-),男,硕士研究生,研究方向为节能减排,xmu_huangxiao@163.com
车载甲醇在线重整制氢高性能铜锌铝催化剂的研究[J].
现代化工, 2018, 38(11): 115-120 DOI:10.16606/j.cnki.issn0253-4320.2018.11.025