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酸醇洗涤法制备的SBA-15载体对Ni/SBA-15催化二氧化碳重整甲烷性能的影响

发表时间:2016-10-15  浏览量:1154  下载量:360
全部作者: 杨维维,贺德华
作者单位: 清华大学化学系有机光电子与分子工程教育部重点实验室
摘 要: 酸醇洗涤法制备的SBA15-aaw载体,通过浸渍法负载Ni后得到5% Ni/SBA15-aaw催化剂;以传统焙烧法(500℃,6 h)制备的SBA15-cal载体,负载Ni后得到5% Ni/SBA15-cal催化剂。对不同方法制得的SBA-15载体进行了傅里叶变换红外(Fourier transform infrared,FTIR)光谱、元素分析(elemental analysis,EA)表征;对两种催化剂进行了X射线衍射(X-ray diffraction,XRD)、程序升温还原(temperature programmed reduction,TPR)表征。此外,在固定床上考察了两种催化剂在二氧化碳重整甲烷(carbon dioxide reforming of methane,CRM)反应中的催化性能。结果表明,由于SBA15-aaw载体在制备过程中残留有一定量的模板剂P123,促进了Ni的分散,从而获得了高分散的Ni基催化剂Ni/SBA15-aaw,因而其在CRM反应中表现出优异的活性和稳定性。
关 键 词: 物理化学;酸醇洗涤法;Ni/SBA-15;P123;二氧化碳重整甲烷;高分散
Title: Influence of SBA-15 support prepared by acid alcohol washing method on the Ni/SBA-15 catalyst for the performance of carbon dioxide reforming of methane
Author: YANG Weiwei, HE Dehua
Organization: Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University
Abstract: The 5% Ni/SBA15-aaw catalyst was prepared by the conventional impregnation method with the SBA15-aaw support obtained by the acid alcohol washing method. While the 5% Ni/SBA15-cal catalyst was prepared with the SBA15-cal support obtained by the conventional calcination method (500℃, 6 h). These supports were all characterized by Fourier transform infrared (FTIR) spectroscopy and elemental analysis (EA), and the catalysts were all characterized by X-ray diffraction (XRD) and temperature programmed reduction (TPR). Besides, the catalysts were employed to catalyze the carbon dioxide reforming of methane (CRM) reaction to evaluate the catalytic performances. The results revealed that the residual P123 on SBA15-aaw support improved the dispersion of Ni on support, and ultimately generated excellent CRM reaction activity and stability.
Key words: physical chemistry; acid alcohol washing; Ni/SBA-15; P123; carbon dioxide reforming of methane; highly-dispersed
发表期数: 2016年10月第19期
引用格式: 杨维维,贺德华. 酸醇洗涤法制备的SBA-15载体对Ni/SBA-15催化二氧化碳重整甲烷性能的影响[J]. 中国科技论文在线精品论文,2016,9(19):2051-2059.
 
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