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Catalytic activity of SBA-15 supported Ni catalyst in CH4 dry reforming: Effect of Al, Zr, and Ti co-impregnation and Al incorporation to SBA-15
International Journal of Hydrogen Energy ( IF 8.1 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.ijhydene.2020.03.052
Cigdem Okutan , Huseyin Arbag , Nail Yasyerli , Sena Yasyerli

In this study, the catalytic activity of the mesoporous SBA-15 supported Ni–Al, Ni–Zr, and Ni–Ti catalysts prepared by an impregnation method were investigated in dry reforming of methane. In addition, Al incorporated SBA-15 (Al–SBA-15) materials used as catalyst support were synthesized following a one-pot hydrothermal route in three different conditions: synthesis in the presence of only HCl, only NaCl, and both HCl and NaCl (denoted as A, S, and B, respectively). All catalysts were characterized by XRD, N2 adsorption-desorption isotherms, ICP-OES, DRIFTS, SEM, TEM-EDX and TGA techniques before and/or after reaction tests. Among Al, Zr, and Ti impregnated catalysts, Ni–Al impregnated catalyst showed the highest activity in dry reforming of methane. According to activity test results, Al–SBA-15 supported Ni catalyst prepared by the one-pot hydrothermal route in the presence of both HCl and NaCl showed the best catalytic activity with high methane (81%) and carbon dioxide conversion (88%) values at 750 °C. The highest H2 and CO selectivity values were obtained with the same catalyst with an H2/CO molar ratio of 0.80. Therefore, these results showed that partial Al (0.11%) incorporated into the structure of SBA-15 was sufficient to improve the catalytic activity of the catalyst in dry reforming of methane.



中文翻译:

SBA-15负载的Ni催化剂在CH 4干重整中的催化活性:Al,Zr和Ti共浸渍以及Al掺入SBA-15中的作用

在这项研究中,研究了通过浸渍法制备的介孔SBA-15负载的Ni-Al,Ni-Zr和Ni-Ti催化剂在甲烷干重整中的催化活性。此外,在三种不同条件下,按照一锅法热液路线,合成了用作催化剂载体的掺铝SBA-15(Al–SBA-15)材料:仅在HCl,仅NaCl以及HCl和NaCl的存在下进行合成(分别表示为A,S和B)。所有催化剂均通过XRD,N 2表征反应测试之前和/或之后的吸附-解吸等温线,ICP-OES,DRIFTS,SEM,TEM-EDX和TGA技术。在Al,Zr和Ti浸渍的催化剂中,Ni-Al浸渍的催化剂在甲烷干重整中表现出最高的活性。根据活性测试结果,在HCl和NaCl的存在下,通过一锅水热法制备的Al–SBA-15负载的Ni催化剂表现出最佳的催化活性,其中甲烷含量高(81%),二氧化碳转化率高(88%)值在750°C。使用具有H 2的相同催化剂可获得最高的H 2和CO选择性值/ CO摩尔比为0.80。因此,这些结果表明,掺入SBA-15结构中的部分Al(0.11%)足以改善催化剂在甲烷干重整中的催化活性。

更新日期:2020-04-02
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