Effect of the Acidity of the Groups of Functionalized Silicas on the Direct Synthesis of H2O2

被引：11
作者：
Blanco-Brieva, G. [1 ]
Montiel-Argaiz, M. [1 ,3 ]
Desmedt, F. [2 ]
Miquel, P. [2 ]
Campos-Martin, J. M. [1 ]
Fierro, J. L. G. [1 ]
机构：
[1] CSIC, Inst Catalisis & Petroleoquim, Sustainable Energy & Chem Grp, Marie Curie 2, Madrid 28049, Spain
[2] Solvay, Rue Ransbeek 310, B-1120 Brussels, Belgium
[3] Univ Autonoma Madrid, Dept Quim Fis Aplicada, Fac Ciencias, Francisco Tomas Y Valiente 7, Madrid 28049, Spain
来源：
TOPICS IN CATALYSIS | 2017年 / 60卷 / 15-16期
关键词：
Direct synthesis; Acid strength; Acidfunctionalized silica; HYDROGEN-PEROXIDE; PD CLUSTERS; CATALYSTS; PALLADIUM; OXYGEN; H-2; MECHANISM; O-2;
D O I：
10.1007/s11244-017-0802-4
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Three catalysts consisting of palladium supported on functionalized silica with different acid groups (namely aryl sulfonic, alkyl phosphonic and alkyl carboxylic groups) were prepared and tested in the direct synthesis of hydrogen peroxide in neutral methanol medium at an overall pressure of 5.0 MPa. These catalysts can produce hydrogen peroxide. In addition, the activity results indicated correlations among the acid strength of the acidic group on the supports, the proportion of high binding energy palladium species and the selectivity for hydrogen peroxide.
引用
收藏
页码：1151 / 1155
页数：5
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