Influence of trace oxygen on the hydrogenation activity of Ru/Al2O3 catalysts

被引：1
作者：
Seki, Haruka [1 ]
Ohshima, Masa-aki [1 ]
Kurokawa, Hideki [1 ]
Miura, Hiroshi [1 ]
机构：
[1] Saitama Univ, Grad Sch Sci & Engn, Sakura Ku, Saitama 3388570, Japan
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2010年 / 101卷 / 02期
关键词：
Hydrogenation; Aromatic hydrocarbon; Ru catalyst; Effect of oxygen; Bimetallic Pt-Ru catalyst; SUPPORTED RUTHENIUM CATALYSTS; CHEMISORPTIVE PROPERTIES; REDUCTION TEMPERATURE; AMMONIA-SYNTHESIS; METAL-CATALYSTS; CO; CHLORINE; NAPHTHALENE; PRECURSOR; RU;
D O I：
10.1007/s11144-010-0227-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of trace oxygen on the catalytic activity of alumina supported Ru in the liquid phase hydrogenation of aromatic hydrocarbons was studied. The catalytic activity of Ru increased remarkably and the reproducibility was improved by removing dissolved oxygen from the reactant mixture and carefully refining the catalyst transfer procedure into the reactor to avoid exposure to air. Trace oxygen affected Ru very severely, but did not affect Rh, Pd, and Pt much. The activity of Ru was lower than those of Rh, Pd, and Pt in the presence of oxygen as reported in the literature; however, it was the highest when oxygen was removed carefully. Measurements of the adsorbed oxygen suggested that the activity seriously decreased when only the part of Ru surface was covered by oxygen. Bimetallic Pt-Ru catalysts demonstrated high activity even in the presence of oxygen.
引用
收藏
页码：313 / 320
页数：8
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