化工进展2018，Vol.37Issue(3)：1014-1020,7.DOI:10.16085/j.issn.1000-6613.2017-1035
一锅溶剂蒸发诱导自组装法制备助剂体相分布的Pd-Ba-Zn/γ-Al2O3催化剂及其蒽醌加氢性能
One-pot solvent evaporation induced self-assembly synthesis of Pd-Ba-Zn/γ-Al2O3catalyst with homogeneous distribution of the promoters and its hydrogenation performance of anthraquinone
摘要
Abstract
Two 0.4%Pd-2.5%Ba-3.0%Zn/γ-Al2O3catalysts with homogeneous distribution and surface distribution of Ba- and Zn- promoters were prepared via one-pot solvent evaporation induced self-assembly method and incipient-wetness impregnation method,respectively. The catalysts were evaluated in anthraquinone hydrogenation reaction for preparing hydroanthraquinone. Effects of the introduction of the two promoters and their distribution methods on the microstructures and catalytic performance of the catalysts were comparatively studied by XRD,TEM,SEM,EDS,N2 adsorption-desorption,XPS and high performance liquid chromatography. The results showed that, both of the maximum hydrogenation efficiency and stability of the catalysts increase after introducing the promoters. When distribution of the promoters was changed from surface distribution to homogeneous distribution,the stability of the catalyst is further improved,but its hydrogenation efficiency and recycling rate of anthraquinone is almost the same. In comparison with the conventional preparation process of the catalyst with surface distribution of the promoters,Ba- and Zn- were simultaneously introduced when preparing its precursor of γ-Al2O3with homogeneous distribution of the promoters. The new method has significant advantages of avoiding the impregnation towards the precursors of the promoters and the subsquent drying,calcination processes,and thus greatly simplifies the preparation process,dramatically reduces the energy consumption,and significantly improves the preparation efficiency.关键词
加氢/2-乙基蒽醌/Pd-Ba-Zn/γ-Al2O3催化剂/助剂表相分布/助剂体相分布Key words
hydrogenation/2-ethylanthraquinone/Pd-Ba-Zn/γ-Al2O3catalyst/surface distribution of promoter/homogeneous distribution of promoter分类
化学化工引用本文复制引用
严润华,蔡卫权,卓俊琳,王昕,李旻哲..一锅溶剂蒸发诱导自组装法制备助剂体相分布的Pd-Ba-Zn/γ-Al2O3催化剂及其蒽醌加氢性能[J].化工进展,2018,37(3):1014-1020,7.基金项目
2016年度武汉市"黄鹤英才(科技)计划"项目. （科技）
