Cr/Na-ZSM-5催化剂的制备及表征

被引：0
|
作者：
肖春莹 [1 ]
杨民 [2 ]
韩佃均 [2 ]
机构：
[1] 大连交通大学材料科学与工程学院
[2] 大连交通大学环境与化学工程学院
来源：
大连交通大学学报 | 2014年 / 35卷 / 06期
关键词：
Cr基催化剂; 浸渍法; 制备; 表征;
D O I：
10.13291/j.cnki.djdxac.2014.06.019
中图分类号：
O643.36 [催化剂];
学科分类号：
摘要：
以Cr(NO3)3为Cr源,Na/ZSM-5为载体,采用浸渍法制备了一系列Cr基催化剂(Cr的质量分数分别为0%,2.5%,5%,7.5%,10%),分别在873 K和1 073 K下焙烧.采用FT-IR、XRD、BET和SEM等测试手段对产物的结构进行了表征.在自主微型固定反应器上,采用CO2-TPD和H2-TPR反应考察了催化剂的性能.结果表明:活性组分Cr2O3均匀的分散在Na/ZSM-5载体的表面,并且对催化剂的酸碱性和还原性有一定的影响.焙烧温度的不同对催化剂有很大影响,在873 K下焙烧的催化剂具有较好的结构和形貌,而在1073 K焙烧的催化剂出现塌陷现象.
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页码：74 / 78
页数：5
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