Australian Journal of Chemistry ( IF 1.0 ) Pub Date : 2020-11-03 , DOI: 10.1071/ch20193 Renata Lippi , Campbell J. Coghlan , Shaun C. Howard , Christopher D. Easton , Qinfen Gu , Jim Patel , Christopher J. Sumby , Danielle F. Kennedy , Christian J. Doonan
Manganese-based metal–organic frameworks (MOFs) metalated with Rh were used as pre-catalysts for CO2 hydrogenation. Activated in situ (80 % H2, 20 % CO2, 350°C), the resulting templated catalysts displayed CO2 conversion of up to 20 %, with CH4 as the main product. Used catalysts were compared with samples templated in 5 % H2/Ar at 350°C using powder X-ray diffraction, electron microscopy, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy. It was found that under reducing atmosphere Rh0 nanoparticles formed and organic MOF components decomposed, which allowed growth of MnO or MnCO3 and the formation of a mesh of catalytic Rh0 nanoparticles.
中文翻译:
还原条件下Rh纳米催化剂的原位MOF模板化
用Rh金属化的锰基金属有机骨架(MOF)用作CO 2加氢的预催化剂。原位(80%H激活2,20%CO 2,350℃),将得到的模板化催化剂显示CO 2转化率可达到20%,用CH 4作为主要产物。使用粉末X射线衍射,电子显微镜,能量分散光谱和X射线光电子能谱,将用过的催化剂与在5%H 2 / Ar下以350°C为模板的样品进行比较。发现在还原性气氛下,Rh 0纳米颗粒形成并且有机MOF组分分解,这允许MnO或MnCO 3的生长并形成催化性Rh 0纳米颗粒的网格。