Kim Min-Ji, Kim Tae-Wan, Chae Ho-Jeong, Kim Chul-Ung, Jeong Soon-Yong, Kim Jeong-Rang, Ha Kyoung-Su
J Nanosci Nanotechnol. 2016 Feb;16(2):2004-9. doi: 10.1166/jnn.2016.11990.
Uniform rhodium nanoparticles (NP) with three different particle sizes (1.9, 2.4, and 3.6 nm) were prepared via a polyol method with rhodium (III) acetylacetonate, poly(vinylpyrrolidone) with different concentrations of sodium citrate. The prepared Rh nanoparticles were impregnated into the ordered mesoporous carbon supports with two different pore structures (2D hexagonal and 3D cubic). The prepared Rh nanoparticle-supported ordered mesoporous carbons (OMCs) were introduced as catalysts for the CO hydrogenation of syngas to produce C2 higher alcohols. The characteristics of the Rh nanoparticle-supported ordered mesoporous carbons catalysts were analyzed through transmission electron microscopy, powder X-ray diffraction, and N2 physisorption analysis. The catalytic tests of the catalyst were performed using a fixed-bed reactor. The results revealed that the catalysts exhibited the different catalytic activity and selectivity of higher alcohols, which could be attributed to the different OMC structures, the nanoparticle size of Rh, and aggregation of Rh nanoparticles during the reaction.
采用多元醇法，以乙酰丙酮铑（III）、不同浓度柠檬酸钠的聚乙烯吡咯烷酮制备了三种不同粒径（1.9、2.4和3.6纳米）的均匀铑纳米颗粒（NP）。将制备的铑纳米颗粒浸渍到具有两种不同孔结构（二维六方和三维立方）的有序介孔碳载体中。将制备的负载铑纳米颗粒的有序介孔碳（OMC）作为合成气CO加氢制C2以上高级醇的催化剂引入。通过透射电子显微镜、粉末X射线衍射和N2物理吸附分析对负载铑纳米颗粒的有序介孔碳催化剂的特性进行了分析。使用固定床反应器对催化剂进行了催化测试。结果表明，催化剂表现出不同的高级醇催化活性和选择性，这可能归因于不同的OMC结构、铑纳米颗粒的粒径以及反应过程中铑纳米颗粒的聚集。
