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二乙醇胺氧化脱氢制亚氨基二乙酸Cu/ZrO2催化剂的研究

发表时间:2012-04-15  浏览量:1162  下载量:521
全部作者: 李艳妮
作者单位: 浙江师范大学物理化学研究所
摘 要: 采用共沉淀法制备Cu/ZrO2催化剂,考察反应条件对二乙醇胺氧化脱氢制亚氨基二乙酸(iminodiacetic acid, IDA)催化剂活性的影响。采用X射线衍射(X-ray diffraction, XRD),扫描电子显微镜-X射线能谱仪(scanning electron microscope-energy dispres spectroscopy, SEM-EDS),N2吸附-脱附等手段考察催化剂反应前后结构特征及表面性能。结果表明:催化剂在循环使用过程中结构的改变是造成催化活性下降的主要因素,反应原料NaOH加剧了催化剂的晶化,削弱了铜与载体的相互作用,导致铜颗粒不断聚集长大并且流失。
关 键 词: 催化化学;亚氨基二乙酸;Cu/ZrO2催化剂;NaOH;晶化
Title: Study of Cu/ZrO2 catalyst for oxidation dehydrogenation from diethanolamine to iminodiacetic acid
Author: LI Yanni
Organization: Institute of Physical Chemistry, Zhejiang Normal University
Abstract: Cu-zirconia catalyst was prepared by coprecipitation and tested for oxidation dehydrogenation from diethanolamine to iminodiacetic acid (IDA). The results showed that the catalytic activity was influenced by the reaction conditions. Techniques of X-ray Zdiffraction (XRD), scanning electron microscope-energy dispres spectroscopy (SEM-EDS) and N2 adsorption-desorption were used to characterize the structure and surface properties of the catalyst. The results showed that the structural change of the catalyst was the major factor of deactivation in the reaction process. The sodium hydroxide accelerated the crystallization of catalyst and weakened the interaction between copper and zirconia, which brought about copper particles growing up rapidly and being lost.
Key words: catalytic chemistry; iminodiacetic acid; Cu-zirconia catalyst; sodium hydroxide; crystallization
发表期数: 2012年4月第7期
引用格式: 李艳妮. 二乙醇胺氧化脱氢制亚氨基二乙酸Cu/ZrO2催化剂的研究[J]. 中国科技论文在线精品论文,2012,5(7):615-622.
 
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