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5. 氧化锆对铜基甲醇合成催化剂的促进作用

氧化锆对铜基甲醇合成催化剂的促进作用

来源 :天然气化学 | 被引量 : 0次 | 上传用户：fly_bird2

【摘 要】

：

采用离子掺杂价态补偿原理,在Cu-Zn-Al甲醇合成催化剂中添加适量氧化锆助剂研制Cu-Zn-Al-Zr催化剂的特性.实验结果表明,最佳反应温度为230°C,比Cu-Zn-Al约低l0°C.采用XRD、

【作 者】

：

林仁存 杨意泉 袁友珠 林种玉 李晨 杨华 王琪 张鸿斌 

【机 构】

：

厦门大学物理化学研究所固体表面物理化学国家重点实验室

【出 处】

：

天然气化学

【发表日期】

：

2004年期

【关键词】

：

甲醇合成 Cu-Zn-Al催化剂 Cu-Zn-Al-Zr催化剂 热稳定性 methanol synthesis Cu-Zn-A1 catalyst Cu-Zn- 

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论文部分内容阅读

采用离子掺杂价态补偿原理,在Cu-Zn-Al甲醇合成催化剂中添加适量氧化锆助剂研制Cu-Zn-Al-Zr催化剂的特性.实验结果表明,最佳反应温度为230°C,比Cu-Zn-Al约低l0°C.采用XRD、UVDR、FTIR、TPD和TPR等谱学方法对2种催化剂进行表征显示,铜基催化剂的活性位可能是"Cu0-Cu+-O-Z一7Al2O3-ZrO2",工作态Cu-Zn-Al-Zr催化剂表面上Cu+/Cu0的比值、价态稳定性和对CO的吸附量均大于Cu-Zn-Al,这与该催化剂具有较好的低温活性和较高的热稳定性密切相关.

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