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以AISI316泡沫金属为基体为太阳能甲烷重整反应制备出系列Ru基和Ni基催化活性吸收体(Ru/Al2O3/AISI316,Ni/Al2O3(MgO)/AISI316),着重利用XRD、TPR、TPD和CO2脉冲吸脱附等技术对所制整体式催化剂的表面特性进行了表征和分析.结果表明:以AISI316泡沫金属为基体可增加活性组分与涂层载体Al2O3的相互作用以及活性物种的分散度.对于Ni基催化活性吸收体,在涂层载体中添加MgO助剂可显著地提高Ni/Al2O3/AISI316的催化活性;Al2O3涂层载体含量的增加可提高活性组分NiO的分散性.相对Ni/Al2O3/AISI316,Ru/Al2O3/AISI316催化活性吸收体对CO2的吸附和活化能力更强,因而具有相对更高的催化活性.
A series of Ru-based and Ni-based catalytically active absorbers (Ru / Al 2 O 3 / AISI 316, Ni / Al 2 O 3 (MgO) / AISI 316) were prepared from the AISI 316 metal foam matrix for the solar methane reforming reaction. XRD, TPR, TPD and CO 2 Pulse adsorption and desorption techniques were used to characterize and analyze the surface properties of the monolithic catalyst.The results showed that the interaction between the active component and the Al2O3 carrier and the dispersion degree of the active species were enhanced by using AISI316 foam metal as matrix. For the Ni-based catalytically active absorber, the addition of MgO in the coating carrier can significantly improve the catalytic activity of Ni / Al2O3 / AISI316; Al2O3 coating carrier content can increase the dispersion of the active ingredient NiO relative Ni / Al2O3 / AISI316, Ru / Al2O3 / AISI316 catalytically active absorbers have stronger adsorption and activation ability for CO2 and thus have a relatively higher catalytic activity.