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Cr_2O_3在铜基甲醇合成催化剂中的作用
Authors
于腊佳
廖代伟
+4 more
张鸿斌
林国栋
蔡启瑞
陈鸿博
Publication date
15 June 1998
Publisher
Abstract
研究了三组份Cu-ZnO-Al_2O_3催化剂添加Cr_2O_3后.铬在催化剂中的存在形式,助催作用本质及其与甲醇含成催化活性的关联。结果表明:在ZnO-Cr_2O_3催化剂中,铬以Cr~(3+)和ZnCr_2O_4形式存在于ZnO晶格中,Cu-ZnO-Al_2O_3-Cr_2O_3催化剂的催化活性与CR~(3+)在ZnO晶格中诱导出来的正一价缺位和催化剂的其它顺磁性物种的ESR强度能很好地关联,在活性测试中,以含1%Cr(原子比)的Cu-ZnO-Al_2O_3-Cr_2O_3的催化活性最高
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Last time updated on 16/06/2016