针对完全液相法制备的Cu-Zn-Al催化剂在还原前就有低价态Cu存在的问题,考察了几种不同类型的含铜物质在液体石蜡中热处理时,热处理气氛、催化剂各组分间的相互作用以及铜源种类对热处理产物的影响.结果表明,液体石蜡在受热情况下能将Cu2+还原,并且遵循先生成Cu+,再生成单质Cu的逐级还原;Cu2+被还原的程度与铜盐的种类和热处理温度有关.CuO在240℃时可以被液体石蜡还原为Cu2O,在300℃时被还原为单质Cu；在相同温度下,硝酸铜比乙酸铜更容易被液体石蜡还原.完全液相法制备的Cu基催化剂在还原前就有低价态Cu存在的根本原因是液体石蜡的存在.
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